CN201460241U - Prestress high-strength steel mesh anchorage - Google Patents
Prestress high-strength steel mesh anchorage Download PDFInfo
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- CN201460241U CN201460241U CN200920110050XU CN200920110050U CN201460241U CN 201460241 U CN201460241 U CN 201460241U CN 200920110050X U CN200920110050X U CN 200920110050XU CN 200920110050 U CN200920110050 U CN 200920110050U CN 201460241 U CN201460241 U CN 201460241U
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Abstract
The utility model discloses a prestress high-strength steel mesh anchorage, which is characterized in that the prestress high-strength steel mesh anchorage comprises an anchorage (1), a bolt (2), a screw rod (3) and a clamping piece (4), wherein the bolt is arranged in a via hole of the anchorage, the screw rod and the clamping piece are arranged in the via hole of the bolt and are connected, the taper angle of the clamp piece is bigger than the taper angle of the via hole of the bolt, and the two taper angles differs for 0.05-0.5 degree. The prestress high-strength steel mesh anchorage has the advantages of reliable anchoring performance, enough bearing capacity, endurance and convenient construction. The prestress high-strength steel mesh anchorage can be tensioned at once after assembling, the centering is convenient, the interchangeability is excellent, and the adaptability for environment is high. The prestress high-strength steel mesh anchorage is a small-sized flat anchorage which can anchor a plurality of high-strength steel wires at the same time, can fully play the strength of pre-tension bars, and safely achieves the tension operation.
Description
Technical field
The utility model relates to a kind of prestressed high-strength gauze wire cloth ground tackle.
Background technology
Domestic existing ground tackle is pressed the anchorage style difference, can be divided into clip type, supporting type, male cone type and bond four kinds of formulas.
Aspect the prestressed stretch-draw anchor system and since the patent of foreign technology with maintain secrecy, the research of China and production technology be relatively hysteresis always, for a long time, adopting traditional presstressing tendon anchor, and the long-term dependence on import of the anchor clamp of steel strand.Studies show that, traditional strand tapered anchorage is applied to wire rope, two kinds of failure modes can appear: wire rope from ground tackle, skid off with wire rope in ground tackle by pinch off, therefore to be used for wire rope to strand tapered anchorage, just must transform traditional strand tapered anchorage.
In traditional strand tapered anchorage, intermediate plate is identical with the cone angle of anchor cup, in the ground tackle stretching process, along with stretching force increases, the power of intermediate plate extruding anchor cup also increases thereupon, thereby make the anchor cup produce distortion, cause that cone angle becomes big, cause along the equally distributed power of intermediate plate total length and concentrate, cause wire rope dark at the shallow small end of the big end of catcher mark of intermediate plate total length to the intermediate plate small end, make wire rope not reach the ultimate tension of regulation, concentrated and destroyed because of producing stress on the wire rope.
The utility model content
The purpose of this utility model provides a kind of prestressed high-strength gauze wire cloth ground tackle.
The prestressed high-strength gauze wire cloth ground tackle that the utility model provides is characterized in that: it comprises anchoring piece 1, bolt 2, screw rod 3 and intermediate plate 4;
Described anchoring piece 1 is the hexahedron shape, wherein is provided with at least four through hole I (5) between one group of opposite face (upper and lower two bottom surfaces), is provided with at least six through hole II (6) between the one group of opposite face (former and later two bottom surfaces) in other two groups of opposite faces; The high tensile steel wire rope guide portion 6-2 that described through hole II is provided with the bolt district 6-1 of screw thread and is supplied the high tensile steel wire rope to pass by wall forms;
The outer wall of described screw rod 3 is provided with screw thread; Screw rod is provided with the through hole III for high tensile steel wire rope diameter coupling that pass and the high tensile steel wire rope vertically;
Described intermediate plate 4 is provided with the through hole IV for high tensile steel wire rope diameter coupling that pass and the high tensile steel wire rope vertically; Described intermediate plate is divided into cylindrical zone A (4-1), round platform district 4-2 and cylindrical zone B (4-3) three parts of joining with screw rod vertically successively; In the described round platform district, with the diameter of described cylindrical zone A joint greater than with the diameter of described cylindrical zone B joint; The diameter of described cylindrical zone B less than in the described round platform district with the diameter of described cylindrical zone B joint; The diameter of described cylindrical zone A less than in the described round platform district with the diameter of described cylindrical zone A joint; The diameter of described cylindrical zone A is greater than the diameter of described cylindrical zone B; Cylindrical zone A and round platform district evenly are divided into three lobes or pintongs vertically;
The outer wall of described bolt 2 is provided with screw thread; Bolt is provided with through hole V vertically; Described through hole V is divided into screw rod district 2-1 and anchor cup district 2-2 vertically; The wall in described screw rod district is provided with screw thread;
Described bolt is located in the bolt district of through hole II of described anchoring piece, and the screw thread in the screw thread of bolt outer wall and described bolt district is complementary; Described screw rod is located in the screw rod district of described bolt, and the screw thread in the screw thread of screw rod outer wall and described screw rod district is complementary; The cylindrical zone A of described intermediate plate is located in the screw rod district of described bolt, and joins with described screw rod; The round platform district of described intermediate plate is located in the anchor cup district of described bolt, the wall in the anchor cup district of the outer rim of the face that described round platform district and described cylindrical zone A join and described bolt joins, and described round platform district overlaps with the cross section of described screw rod district and joint, described anchor cup district with the face that described cylindrical zone A joins; The cylindrical zone B of described intermediate plate is positioned at the high tensile steel wire rope guide portion of the through hole II of described anchoring piece; The big 0.05-0.5 degree of cone angle in the anchor cup district of the more described bolt of cone angle in the round platform district of described intermediate plate.
In the ground tackle of the present utility model, the cone angle in the round platform district of intermediate plate is a bit larger tham the cone angle in the anchor cup district of bolt, can reduce the pressure peak of anchorage zone.Intermediate plate because the cone angle in round platform district is bigger slightly than the cone angle in anchor cup district, occurs pressure earlier at the rear portion of ground tackle when the jacking of anchor cup district, increase along with the jacking distance, distortion appears in intermediate plate and anchor cup district, and contact surface between the two increases gradually, and the pressure at ground tackle rear portion develops to leading portion gradually.When the difference of the cone angle in the cone angle in round platform district and anchor cup district within the specific limits the time, the radial stresses that intermediate plate imposes on wire rope is relative uniform with shear stress, Here it is the desired reasonable stress distribution of prestressed high-strength steel wire strand tapered anchorage.
In the ground tackle of the present utility model, the bigger shortcoming of wire rope amount of recovery after stretch-draw is finished at prestress rope has designed special screw rod (by tightening screw rod, can make intermediate plate jacking anchor cup district, clamp wire rope), and prestressed loss is reduced significantly.
Described prestressed high-strength gauze wire cloth ground tackle can pass through described through hole I, is fixed in described bridge bottom with high-strength bolt, specifically can calculate the number of determining through hole I by shear-carrying capacity.
The cone angle in the anchor cup district of the more described bolt of cone angle in the round platform district of described intermediate plate is preferably big 0.1 degree.
The cone angle in described round platform district can be the 1-5 degree, is preferably 3 degree.
Described through hole II can be positioned at the same horizontal level of described anchoring piece.
The diameter of the more described high tensile steel wire rope in aperture of described high tensile steel wire rope guide portion is the 0.5-1.5 millimeter greatly, is preferably big 1 millimeter.
Along described intermediate plate axially, the ratio of the length of described cylindrical zone A, described round platform district and described cylindrical zone B can be (3-6): (17-20): (7-12), be preferably 5: 18: 10.
Along described bolt axially, the ratio of the length in described screw rod district and described anchor cup district can be (2-5): (1-2), be preferably 1: 1.
Described anchoring piece specifically can be long 1m, wide 13cm, the cuboid of high 3cm.Specifically can be provided with 33 through hole II and 20 through hole I.Along described intermediate plate axially, the length of described cylindrical zone A, described round platform district and described cylindrical zone B can be 0.3cm-0.6cm, 1.7cm-2cm, 0.7cm-1.2cm successively, is preferably 0.5cm, 1.8cm, 1cm.Along described bolt axially, the length in described screw rod district and described anchor cup district can be 1cm-2.5cm, 1.5cm-3.0cm successively, is preferably 2cm, 2cm.
Ground tackle of the present utility model has following advantage: anchoring property is reliable; Enough supporting capacitys; Durable; Easy construction; Stretch-draw immediately after the assembling; Centering is convenient, and interchangeability is good, to the adaptive capacity height of environment; The small-sized flat anchor of many high tensile steel wires of anchoring simultaneously; Can give full play to the intensity of pre-applied force muscle, and realize the stretch-draw operation safely.
Description of drawings
Fig. 1 is the anchoring piece elevation.
Fig. 2 is the anchoring piece plan view.
Fig. 3 is the 3 dimensional drawing of ground tackle.
Fig. 4 is the sectional drawing of bolt.
Fig. 5 is the sectional drawing of intermediate plate.
Fig. 6 is the sectional drawing of screw rod.
Fig. 7 is the sectional drawing after bolt, screw rod and the intermediate plate assembling.
Fig. 8 loads schematic diagram for test beam.
The specific embodiment
Following embodiment is convenient to understand better the utility model, but does not limit the utility model.Experimental technique among the following embodiment if no special instructions, is conventional method.
The application of embodiment 1, prestressed high-strength gauze wire cloth ground tackle
To shown in Figure 7, prestressed high-strength gauze wire cloth ground tackle comprises anchoring piece 1, bolt 2, screw rod 3 and intermediate plate 4 as Fig. 1.Anchoring piece is the cuboid of long 1m, wide 13cm, high 3cm, is provided with 20 through hole I (5) between two bottom surfaces up and down, is provided with 33 horizontal through hole II (6) between former and later two bottom surfaces; The high tensile steel wire rope guide portion 6-2 that through hole II (6) is provided with the bolt district 6-1 of screw thread and is supplied the high tensile steel wire rope to pass by wall forms.The outer wall of screw rod 3 is provided with screw thread; Screw rod 3 is provided with the through hole III for high tensile steel wire rope diameter coupling that pass and the high tensile steel wire rope vertically.Intermediate plate 4 is provided with the through hole IV for high tensile steel wire rope diameter coupling that pass and the high tensile steel wire rope vertically; Intermediate plate 4 is divided into cylindrical zone B (4-3) three parts that cylindrical zone A (4-1) that the length of joining with screw rod 3 is 0.5cm, round platform district 4-2 that length is 1.8cm and length are 1cm vertically successively; On the round platform district 4-2, with the diameter of cylindrical zone A (4-1) joint greater than with the diameter of cylindrical zone B (4-3) joint; The diameter of cylindrical zone B (4-3) is less than the diameter of on the round platform district 4-2 and cylindrical zone B (4-3) joint; The diameter of cylindrical zone A (4-1) is less than the diameter of on the round platform district 4-2 and cylindrical zone A (4-1) joint; The diameter of cylindrical zone A (4-1) is greater than the diameter of cylindrical zone B (4-3); Cylindrical zone A (4-1) and round platform district 4-2 evenly are divided into pintongs vertically.The outer wall of bolt 2 is provided with screw thread; Bolt 2 is provided with through hole V vertically; Through hole V is divided into the anchor cup district 2-2 that screw rod district 2-1 that length is 2cm and length are 2cm vertically; The wall in screw rod district is provided with screw thread.Bolt 2 is located in the bolt district 6-1 of through hole II (6), and the screw thread in the screw thread of bolt outer wall and described bolt district is complementary; Screw rod 3 is located in the screw rod district 2-1 of bolt 2, and the screw thread in the screw thread of screw rod outer wall and described screw rod district is complementary; The cylindrical zone A of intermediate plate 4 (4-1) is located in the screw rod district 2-1 of bolt 2, and joins with described screw rod 3; The round platform district 4-2 of intermediate plate 4 is located in the anchor cup district 2-2 of bolt 2, the outer rim of the face that round platform district 4-2 and cylindrical zone A (4-1) join and the wall of described anchor cup district 2-2 join, and round platform district 4-2 overlaps with the cross section of described screw rod district 2-1 and 2-2 joint, described anchor cup district with the face that cylindrical zone A (4-1) joins; The cylindrical zone B of intermediate plate 4 (4-3) is positioned at the high tensile steel wire rope guide portion 6-2 of the through hole II (6) of anchoring piece 1.The cone angle of the round platform district 4-2 of intermediate plate 4 is than big 0.1 degree of cone angle of the anchor cup district 2-2 of bolt 2.
Adopt following method to carry out bridge strengthening with a pair of described prestressed high-strength gauze wire cloth ground tackle:
1) concrete that will treat two ends, reinforcement bridge bottom is polished with the face that concrete is connected with ground tackle, with structure glue anchoring piece (having outside the side direction of screw rod) is sticked on the position of polishing earlier, with high-strength bolt anchoring piece is fixed again, according to Len req intercepting high tensile steel wire rope;
2) the high-strength steel silk screen sheet correspondence of being made up of 33 high tensile steel wire ropes is passed 33 holes of each prestressed high-strength gauze wire cloth ground tackle, every high tensile steel wire rope passes screw rod, intermediate plate and the high tensile steel wire rope guide portion of first described prestressed high-strength gauze wire cloth ground tackle successively, passes high tensile steel wire rope guide portion, intermediate plate and the screw rod of second prestressed high-strength gauze wire cloth ground tackle more successively; Then an end of high tensile steel wire rope is fixed by the screw rod of described prestressed high-strength gauze wire cloth ground tackle, carry out stretch-draw after, again the other end of high tensile steel wire rope is fixed by the screw rod of prestressed high-strength gauze wire cloth ground tackle.
In the prestressed high-strength gauze wire cloth ground tackle, the material of anchoring piece is the Q345 steel, adopts 10.9 grades of M16 high-strength bolts, is coated with inorganic zinc rich paint after the junction member contact surface sandblast (ball) and handles.
High tensile steel wire rope diameter is 3mm, nominal area 7.07mm
2
The sectional dimension of bridge is 150 * 300mm, and vertical muscle is 3 Φ 14, and concrete strength is C45, and load mode is seen Fig. 8.Testing program and the results are shown in Table 1.
Table 1 testing program and experimental result
| Reinforcing mode | Pcr (kN) | Pu (kN) | Δu (mm) | Destructive characteristics |
| Datum line beam | 44 | 160 | 20.3 | Concrete damages by pressure, reinforcement yielding |
| Wire rope, mortar | 91 | 255 | 19 | Concrete damages by pressure, reinforcement yielding, wire rope are broken |
Annotate: Pcr is a cracking load, and Pu is a maximum load, and Δ u is an extreme displacement.
Claims (10)
1. prestressed high-strength gauze wire cloth ground tackle, it is characterized in that: it comprises anchoring piece (1), bolt (2), screw rod (3) and intermediate plate (4);
Described anchoring piece is the hexahedron shape, wherein is provided with at least four through hole I (5) between one group of opposite face, is provided with at least six through hole II (6) between one group of opposite face in other two groups of opposite faces; Described through hole II is provided with the bolt district (6-1) of screw thread by wall and forms for the high tensile steel wire rope guide portion (6-2) that the high tensile steel wire rope passes;
The outer wall of described screw rod is provided with screw thread; Screw rod is provided with the through hole III for high tensile steel wire rope diameter coupling that pass and the high tensile steel wire rope vertically;
Described intermediate plate is provided with the through hole IV for high tensile steel wire rope diameter coupling that pass and the high tensile steel wire rope vertically; Described intermediate plate is divided into cylindrical zone A (4-1), round platform district (4-2) and cylindrical zone B (4-3) three parts of joining with screw rod vertically successively; In the described round platform district, with the diameter of described cylindrical zone A joint greater than with the diameter of described cylindrical zone B joint; The diameter of described cylindrical zone B less than in the described round platform district with the diameter of described cylindrical zone B joint; The diameter of described cylindrical zone A less than in the described round platform district with the diameter of described cylindrical zone A joint; The diameter of described cylindrical zone A is greater than the diameter of described cylindrical zone B; Cylindrical zone A and round platform district evenly are divided into three lobes or pintongs vertically;
The outer wall of described bolt is provided with screw thread; Bolt is provided with through hole V vertically; Described through hole V is divided into screw rod district (2-1) and anchor cup district (2-2) vertically; The wall in described screw rod district is provided with screw thread;
Described bolt is located in the bolt district of through hole II of described anchoring piece, and the screw thread in the screw thread of bolt outer wall and described bolt district is complementary; Described screw rod is located in the screw rod district of described bolt, and the screw thread in the screw thread of screw rod outer wall and described screw rod district is complementary; The cylindrical zone A of described intermediate plate is located in the screw rod district of described bolt, and joins with described screw rod; The round platform district of described intermediate plate is located in the anchor cup district of described bolt, the wall in the anchor cup district of the outer rim of the face that described round platform district and described cylindrical zone A join and described bolt joins, and described round platform district overlaps with the cross section of described screw rod district and joint, described anchor cup district with the face that described cylindrical zone A joins; The cylindrical zone B of described intermediate plate is positioned at the high tensile steel wire rope guide portion of the through hole II of described anchoring piece; The big 0.05-0.5 degree of cone angle in the anchor cup district of the more described bolt of cone angle in the round platform district of described intermediate plate.
2. ground tackle as claimed in claim 1 is characterized in that: big 0.1 degree of the cone angle in the anchor cup district of the more described bolt of cone angle in the round platform district of described intermediate plate.
3. ground tackle as claimed in claim 2 is characterized in that: the cone angle in described round platform district is the 1-5 degree.
4. ground tackle as claimed in claim 3 is characterized in that: the cone angle in described round platform district is 3 degree.
5. as arbitrary described ground tackle in the claim 1 to 4, it is characterized in that: the big 0.5-1.5 millimeter of diameter of the more described high tensile steel wire rope in aperture of described high tensile steel wire rope guide portion.
6. as arbitrary described ground tackle in the claim 1 to 4, it is characterized in that: along described intermediate plate axially, the ratio of the length of described cylindrical zone A, described round platform district and described cylindrical zone B is (3-6): (17-20): (7-12).
7. ground tackle as claimed in claim 6 is characterized in that: along described intermediate plate axially, the ratio of the length of described cylindrical zone A, described round platform district and described cylindrical zone B is 5: 18: 10.
8. as arbitrary described ground tackle in the claim 1 to 4, it is characterized in that: along described bolt axially, the ratio of the length in described screw rod district and described anchor cup district is (2-5): (1-2).
9. ground tackle as claimed in claim 8 is characterized in that: along described bolt axially, the ratio of the length in described screw rod district and described anchor cup district is 1: 1.
10. as claim 1,2,3,4,7 or 9 described ground tackles, it is characterized in that: described anchoring piece is rectangular-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920110050XU CN201460241U (en) | 2009-07-09 | 2009-07-09 | Prestress high-strength steel mesh anchorage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920110050XU CN201460241U (en) | 2009-07-09 | 2009-07-09 | Prestress high-strength steel mesh anchorage |
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| CN201460241U true CN201460241U (en) | 2010-05-12 |
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| CN200920110050XU Expired - Lifetime CN201460241U (en) | 2009-07-09 | 2009-07-09 | Prestress high-strength steel mesh anchorage |
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| CN101942902B (en) * | 2009-07-09 | 2012-04-25 | 北京公科固桥技术有限公司 | Prestressed high-strength steel wire mesh anchorage device |
| CN103104069A (en) * | 2013-01-18 | 2013-05-15 | 杭州浙锚预应力有限公司 | 19-wire steel strand anchoring structure |
| CN103452103A (en) * | 2013-01-18 | 2013-12-18 | 苏州市能工基础工程有限责任公司 | Gripping type anchor with cores convenient to disassemble and method for recycling cores of gripping type anchor |
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| CN101942902B (en) * | 2009-07-09 | 2012-04-25 | 北京公科固桥技术有限公司 | Prestressed high-strength steel wire mesh anchorage device |
| CN103104069A (en) * | 2013-01-18 | 2013-05-15 | 杭州浙锚预应力有限公司 | 19-wire steel strand anchoring structure |
| CN103452103A (en) * | 2013-01-18 | 2013-12-18 | 苏州市能工基础工程有限责任公司 | Gripping type anchor with cores convenient to disassemble and method for recycling cores of gripping type anchor |
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| CN106285144A (en) * | 2016-10-17 | 2017-01-04 | 安徽信泽科技有限公司 | The three-dimensional shock isolation support that a kind of vertical early stage rigidity can regulate |
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| CN106381932A (en) * | 2016-10-17 | 2017-02-08 | 安徽信泽科技有限公司 | Three-dimensional vibration isolation support with adjustable vertical early-stage rigidity |
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| CN106499079A (en) * | 2016-10-17 | 2017-03-15 | 安徽信泽科技有限公司 | A kind of three-dimensional isolation device of adjustable vertical to early stage rigidity |
| CN106499080A (en) * | 2016-10-17 | 2017-03-15 | 安徽信泽科技有限公司 | A kind of predeterminable three-dimensional isolation device of vertical early stage rigidity |
| CN106567588A (en) * | 2016-10-17 | 2017-04-19 | 南京大德减震科技有限公司 | Three-dimensional shock isolation device with vertical initial stiffness capable of being preset |
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| CN106639455A (en) * | 2016-10-17 | 2017-05-10 | 南京大德减震科技有限公司 | Three-dimensional shock isolation device with presettable initial vertical rigidity |
| CN106438826B (en) * | 2016-10-17 | 2019-07-19 | 南京大德减震科技有限公司 | A kind of initial stiffness can preset rubber air spring damper |
| CN106382321B (en) * | 2016-10-17 | 2019-09-03 | 南京大德减震科技有限公司 | A kind of adjustable back pressure type coiled spring damper of initial stiffness |
| CN106382322B (en) * | 2016-10-17 | 2019-09-03 | 南京大德减震科技有限公司 | A kind of complex spring damper of adjustable initial stiffness |
| CN106337592B (en) * | 2016-10-17 | 2020-11-10 | 安徽信泽科技有限公司 | Rubber air spring damper capable of adjusting early rigidity |
| CN106245803B (en) * | 2016-10-17 | 2020-11-10 | 安徽信泽科技有限公司 | Rubber damper capable of adjusting early rigidity |
| CN106499079B (en) * | 2016-10-17 | 2020-11-13 | 安徽信泽科技有限公司 | Three-dimensional shock isolation device capable of adjusting vertical early rigidity |
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