CN114564795B - Automatic parameter matching method for fixed inclined ladder of offshore platform - Google Patents
Automatic parameter matching method for fixed inclined ladder of offshore platform Download PDFInfo
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- CN114564795B CN114564795B CN202111668487.7A CN202111668487A CN114564795B CN 114564795 B CN114564795 B CN 114564795B CN 202111668487 A CN202111668487 A CN 202111668487A CN 114564795 B CN114564795 B CN 114564795B
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- 238000000034 method Methods 0.000 title claims description 15
- 238000004364 calculation method Methods 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 239000000047 product Substances 0.000 description 4
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Ladders (AREA)
Abstract
The invention provides a calculation method of inclined ladder size parameters according to application scenes, which comprises the following steps: firstly, stair target parameters are obtained, and a user inputs target stair spans and stair heights to a developed E3D software calculation module interface. And the computing module provides a dip angle option according to the selection of the application scene of the user. After the inclination angle is selected, a combination option of tread height and tread width is provided, and the size parameters of the ladder beam model and the tread model are determined from the standard. And finally, adding an inclined ladder backing plate model to the step span and the step height input by a user, adding and repairing the ladder beam of the inclined ladder basic model to reach the target size, and selecting the inner net width of the inclined ladder. The invention automatically realizes the determination of the dimension parameters of the inclined ladder, reduces the drawing labor cost, reduces the error rate of the model and improves the drawing efficiency.
Description
Technical Field
The invention relates to a platform fixed inclined ladder design, in particular to a parameter calculation method for an offshore platform fixed inclined ladder model.
Background
In the construction process of the marine large-scale oil and gas module, the fixed inclined ladder is used as a part for vertically transporting the floors of the offshore platform, plays a role in communicating the upper floors with the lower floors, and can be used as a life ladder, an escape ladder and the like. Because the functional requirements of the oil platforms are different, the layer heights and the spans of different positions of each layer are inconsistent, if an equally dividing method is adopted, although the problem can be solved, the parameters of each pedal of each ladder are inconsistent, and standardized design cannot be carried out. The technology solves the parameterized design problem of different ladders through a standardized design technology and an auxiliary structure connecting piece method.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an automatic parameter matching method for the fixed inclined ladder of the offshore platform, which reduces the error rate of a model and improves the manufacturing efficiency of the inclined ladder.
The invention provides a method for calculating size parameters of an inclined ladder, which comprises the following steps:
adopting c++ language to write a computing module based on E3D software, wherein the computing module executes the following steps:
Step one, a user acquires a step span L and a step height H of a steel inclined ladder connected between an upper ladder platform and a lower ladder platform of a floor according to a design drawing, and then inputs the step span L and the step height H in a calculation module interface;
Selecting a steel inclined ladder mode from application scene options of the computing module, wherein the inclined ladder mode comprises a life ladder, an escape ladder, a life and escape ladder and other life ladders;
Step three, judging whether an inter-ladder platform is needed, wherein the specific process is as follows: if H is more than 5m, a ladder platform is required to be arranged, and then the fourth step is executed; if H is less than or equal to 5m, a ladder-to-ladder platform is not needed, the high span ratio of the steel inclined ladder is H/L, and then the fifth step is executed;
Step four, calculating the high span ratio of the steel inclined ladder, wherein the process is as follows:
the first step: calculating the number n of inter-ladder platforms, wherein the number n of the inter-ladder platforms is the height H of the steel inclined ladder divided by 5 and then rounded;
And a second step of: a user selects a recommended value of the travel direction length l of the inter-ladder platform through a calculation module window;
and a third step of: calculating the ladder span by adopting a formula L' =L-n×l;
fourth step: calculating the high span ratio of the steel inclined ladder by adopting a formula H/L';
step five, selecting a corresponding steel inclined ladder inclination angle theta according to the steel inclined ladder high-span ratio in a calculation module interface;
step six, selecting a combination of the stepping height r and the stepping width g in a calculation module interface;
step seven, arranging an inclined ladder backing plate at the bottom of the steel inclined ladder and calculating the size of the inclined ladder backing plate, wherein the inclined ladder backing plate is of a right-angle trapezoid structure, the width of the top wall of the right-angle trapezoid structure is consistent with that of the bottom wall of the steel inclined ladder, the top wall of the right-angle trapezoid structure is completely supported on the bottom wall of the steel inclined ladder, and the included angle between the slope of the right-angle trapezoid structure and the horizontal plane is 9 degrees;
The size of the inclined ladder pad plate comprises a ladder height supplementing quantity delta H and a ladder span supplementing quantity delta L, and the calculation flow of the ladder height supplementing quantity delta H and the ladder span supplementing quantity delta L is as follows:
The first step: calculating the inclined ladder step number m, wherein m is the quotient of the ladder height H and the stepping height r, namely m= [ H/r ];
And a second step of: calculating a ladder height adding amount delta H and a ladder span adding amount delta L; the stair height supplementing quantity delta H is the difference between the stair height H and the product of the order m and the tread height r, namely delta H=H-mr; the step-span interpolation amount Δl is the product of the step-height interpolation amount Δh and cot9 °, i.e., Δl=Δ Hcot9 °;
step eight, selecting the inner net width d of the stair tread in a calculation module interface;
Step nine, calculating parameters of a ladder height H, a ladder span L, an inclined pedal height delta H, an inclined pedal span delta L, an inclined ladder inclination angle theta, a combination of a stepping height r and a stepping width g and an inner side net width d of a module interface display model, and providing reference for a user.
Compared with the prior art, the invention has the advantages that: according to the invention, the calculation module is obtained through secondary development of E3D software, a user can use an application scene and target ladder height and ladder span provided by the module, and can automatically determine the size parameters of the inclined ladder and generate an inclined ladder model under the operation of the user by combining the self requirements, so that the standardized design of the fixed inclined ladder of the offshore large-scale oil-gas module is realized, the drawing labor cost is reduced, the model error rate is reduced, and the inclined ladder manufacturing efficiency is improved.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a flow chart of a high-span ratio calculation method;
Fig. 3 is a schematic view of ramp and pallet dimensions.
Detailed Description
The invention will now be described in detail with reference to the drawings and to specific embodiments.
As shown in fig. 1, the invention provides a method for calculating dimension parameters of a ramp, which comprises the following steps:
adopting c++ language to write a computing module based on E3D software, wherein the computing module executes the following steps:
Step one, a user obtains a step span L and a step height H of a steel inclined ladder connected between an upper step platform and a lower step platform of a floor according to a design drawing, and then inputs the step span L and the step height H in a calculation module interface. The ladder span L represents the length from the first stage step to the final stage step in the horizontal direction, and the ladder height H represents the height from the first stage step to the final stage step in the vertical direction; inter-ladder platforms refer to platforms between adjacent ladder sections for personnel to rest or change the direction of travel.
Step two, selecting a steel inclined ladder mode in the application scene options of the computing module, wherein the inclined ladder mode comprises a life ladder, an escape ladder, a life and escape ladder and other life ladders.
Step three, judging whether an inter-ladder platform is needed, wherein the specific process is as follows: if H >5m, then inter-ladder platforms must be set and then step four is performed. If H is less than or equal to 5m, a ladder-to-ladder platform is not needed, the high span ratio of the steel inclined ladder is H/L, and then the fifth step is executed;
In this step 5m is according to the standard "GB4053.2-2009: fixed steel ladder and platform safety requirement part 2: steel ramp.
Step four, calculating the high span ratio of the steel inclined ladder, wherein the process is as follows:
The first step: calculating the number n of inter-ladder platforms, wherein the number n of inter-ladder platforms is the height H of the steel inclined ladder divided by 5 and then rounding, namely, for the steel inclined ladder with H being more than 5m, one inter-ladder platform is arranged at intervals of 5 meters;
And a second step of: and selecting a recommended value of the travel direction length l of the inter-ladder platform through a calculation module window by a user.
The inter-ladder platform travel direction length l represents the length of the inter-ladder platform in the cross-ladder direction. Recommended values are as in standard "GB4053.3-2009: fixed steel ladder and platform safety requirement part 3: the recommended value of the travel direction length of the middle ladder platform of the industrial guard rail and the steel platform is just;
And a third step of: the ladder spans are calculated using the formula L' =l-nxl. The step aims at removing the part of the length of the ladder span in the advancing direction of the inter-ladder platform;
Fourth step: and calculating the high span ratio of the steel inclined ladder by adopting a formula H/L'.
Step five, selecting a corresponding steel inclined ladder inclination angle theta according to the steel inclined ladder high-span ratio in a calculation module interface;
Step six, selecting a combination of the tread height r and the tread width g in the interface of the calculation module. The tread height r refers to the vertical distance between two adjacent pedals, and the tread width g refers to the horizontal distance between two adjacent pedal flanges. The step height r and step width g in combination may combine the standard "GB4053.2-2009: fixed steel ladder and platform safety requirement part 2: the recommended step height r and step width g in the steel inclined ladder are stored in the calculation module in combination and displayed in the interface of the calculation module for the user to select.
Step seven, arranging an inclined ladder backing plate at the bottom of the steel inclined ladder and calculating the size of the inclined ladder backing plate, wherein the inclined ladder backing plate is of a right-angle trapezoid structure, the width of the top wall of the right-angle trapezoid structure is consistent with that of the bottom wall of the steel inclined ladder, the top wall of the right-angle trapezoid structure is completely supported on the bottom wall of the steel inclined ladder, and the included angle between the slope of the right-angle trapezoid structure and the horizontal plane is 9 degrees;
The size of the inclined ladder pad plate comprises a ladder height adding quantity delta H and a ladder span adding quantity delta L, the inclined ladder step number m is an integer as the inclination angle theta is a standard value, the height and the span of the ladder height H and the ladder span L can reach the required height and the span only through adding, the inclined ladder pad plate is required to be added, the height and the span of the inclined ladder pad plate are the ladder height adding quantity delta H and the ladder span adding quantity delta L respectively, and the calculation flow is as follows:
The first step: the number of steps m is calculated. m is the quotient of the step height H and the step height r, i.e. m= [ H/r ].
And a second step of: the ladder height interpolation amount Δh and the ladder span interpolation amount Δl are calculated. The step height supplement Δh is the difference between the step height H and the product of the order m and the step height r, i.e., Δh=h-mr. And the included angle between the slope surface of the right trapezoid structure and the horizontal plane is 9 degrees, the span adding quantity delta L is the product of the height adding quantity delta H and the cot9 degrees, namely delta L=delta Hcot degrees.
And step eight, selecting the inner net width d of the stair tread in the interface of the calculation module, wherein the inner net width refers to the distance between the inner sides of the two ladder beams and the pedal, which is measured in parallel. Inside clear width d is according to standard "GB4053.2-2009: fixed steel ladder and platform safety requirement part 2: the recommended inside net width d in the steel ramp "is determined and displayed in a software interface for selection by the user.
Step nine, calculating parameters of a ladder height H, a ladder span L, an inclined pedal height delta H, an inclined pedal span delta L, an inclined ladder inclination angle theta, a combination of a stepping height r and a stepping width g and an inner side net width d of a module interface display model, and providing reference for a user.
Claims (1)
1. The inclined ladder size parameter calculation method is characterized by comprising the following steps of:
adopting c++ language to write a computing module based on E3D software, wherein the computing module executes the following steps:
Step one, a user acquires a step span L and a step height H of a steel inclined ladder connected between an upper ladder platform and a lower ladder platform of a floor according to a design drawing, and then inputs the step span L and the step height H in a calculation module interface;
Selecting a steel inclined ladder mode from application scene options of the computing module, wherein the inclined ladder mode comprises a life ladder, an escape ladder, a life and escape ladder and other life ladders;
Step three, judging whether an inter-ladder platform is needed, wherein the specific process is as follows: if H is more than 5m, a ladder platform is required to be arranged, and then the fourth step is executed; if H is less than or equal to 5m, a ladder-to-ladder platform is not needed, the high span ratio of the steel inclined ladder is H/L, and then the fifth step is executed;
Step four, calculating the high span ratio of the steel inclined ladder, wherein the process is as follows:
the first step: calculating the number n of inter-ladder platforms, wherein the number n of the inter-ladder platforms is the height H of the steel inclined ladder divided by 5 and then rounded;
And a second step of: a user selects a recommended value of the travel direction length l of the inter-ladder platform through a calculation module window;
and a third step of: calculating the ladder span by adopting a formula L' =L-n×l;
fourth step: calculating the high span ratio of the steel inclined ladder by adopting a formula H/L';
step five, selecting a corresponding steel inclined ladder inclination angle theta according to the steel inclined ladder high-span ratio in a calculation module interface;
step six, selecting a combination of the stepping height r and the stepping width g in a calculation module interface;
step seven, arranging an inclined ladder backing plate at the bottom of the steel inclined ladder and calculating the size of the inclined ladder backing plate, wherein the inclined ladder backing plate is of a right-angle trapezoid structure, the width of the top wall of the right-angle trapezoid structure is consistent with that of the bottom wall of the steel inclined ladder, the top wall of the right-angle trapezoid structure is completely supported on the bottom wall of the steel inclined ladder, and the included angle between the slope of the right-angle trapezoid structure and the horizontal plane is 9 degrees;
The size of the inclined ladder pad plate comprises a ladder height supplementing quantity delta H and a ladder span supplementing quantity delta L, and the calculation flow of the ladder height supplementing quantity delta H and the ladder span supplementing quantity delta L is as follows:
The first step: calculating the inclined ladder step number m, wherein m is the quotient of the ladder height H and the stepping height r, namely m= [ H/r ];
And a second step of: calculating a ladder height adding amount delta H and a ladder span adding amount delta L; the stair height supplementing quantity delta H is the difference between the stair height H and the product of the order m and the tread height r, namely delta H=H-mr; the step-span interpolation amount Δl is the product of the step-height interpolation amount Δh and cot9 °, i.e., Δl=Δ Hcot9 °;
step eight, selecting the inner net width d of the stair tread in a calculation module interface;
Step nine, calculating the parameters of the step height H, the step span L, the inclined pedal height, the inclined pedal span, the inclined ladder inclination angle, the combination of the step height r and the step width g and the inner net width d of the module interface display model, and providing reference for users.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10358827B1 (en) * | 2016-12-11 | 2019-07-23 | Robert Everett Sorenson, JR. | System and method for stair assembly and installation |
| CN111460567A (en) * | 2020-04-17 | 2020-07-28 | 同瀚建筑科技(杭州)有限公司 | BIM-based stair surface layer clear height inspection system, application system-based method and process |
| CN112016148A (en) * | 2020-08-31 | 2020-12-01 | 广联达科技股份有限公司 | Method and system for calculating stair engineering quantity |
| CN112093001A (en) * | 2020-09-23 | 2020-12-18 | 芜湖造船厂有限公司 | Ship inclined ladder channel clear space judgment method |
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- 2021-12-31 CN CN202111668487.7A patent/CN114564795B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10358827B1 (en) * | 2016-12-11 | 2019-07-23 | Robert Everett Sorenson, JR. | System and method for stair assembly and installation |
| CN111460567A (en) * | 2020-04-17 | 2020-07-28 | 同瀚建筑科技(杭州)有限公司 | BIM-based stair surface layer clear height inspection system, application system-based method and process |
| CN112016148A (en) * | 2020-08-31 | 2020-12-01 | 广联达科技股份有限公司 | Method and system for calculating stair engineering quantity |
| CN112093001A (en) * | 2020-09-23 | 2020-12-18 | 芜湖造船厂有限公司 | Ship inclined ladder channel clear space judgment method |
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