Basement roof travelling crane equivalent load parameterization calculation and arrangement method

Abstract

The invention discloses a basement roof driving equivalent load parameterization calculation and arrangement method, a basement roof comprises a plurality of spliced plate bodies, and the equivalent load parameterization calculation and arrangement method comprises the following steps: obtaining a basement model, a traffic lane plane drawing and vehicle information; loading a traffic lane plane drawing and the basement model in the parameterization platform, obtaining a traffic lane range area in the traffic lane plane drawing, and judging whether each plate body of the basement top plate falls into the traffic lane range area or not; screening out a plate body falling into a traffic lane range area, extracting corresponding plate span information, substituting the information into a fitting formula, and solving to obtain an equivalent load value; according to the equivalent load value, the reinforcement information of the corresponding plate body in the basement model is automatically updated, automation of equivalent load calculation and arrangement of the top plate traveling crane is achieved, and calculation errors are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary structure design, and in particular to a method for parameterized calculation and arrangement of a basement roof crane equivalent load. Background Art

[0002] During the construction of the project, it is common to encounter large construction vehicles such as concrete tankers, PC transporters, and truck cranes passing on the roof of the basement. At this time, since the roof is set up with a construction road, the original structure needs to consider the construction road load for reinforcement envelope to verify the force and reinforcement area of ​​the basement structure when the vehicle driving load is applied. For such problems, each plate needs to arrange the equivalent load of the construction vehicle under the most unfavorable conditions, and the "typical plate method" is generally used for processing. The method is as follows: 1. Select typical plates: Investigate the span of each plate within the lane range, classify and summarize according to shape, span length, and span ratio, and extract several representative plates; 2: Solve the equivalent load. Model these typical plates in the finite element software, apply the most unfavorable load P in combination with vehicle data, and apply the uniformly distributed load q again according to the equivalent load principle, so that the plate span bending moment is equal in the two cases. At this time, q is the equivalent load of the typical plate under the most unfavorable load P. Repeat this process until all typical plates are solved; 3. Arrange equivalent loads: apply each equivalent load value to each plate in turn. For non-typical plates, consider their span and area comprehensively and then merge them into the corresponding typical plates. The model processing is completed.

[0003] However, the above typical plate method has the following problems:

[0004] 1) The key to the typical plate method is to accurately summarize the typical plate span. From the perspective of calculation accuracy, the more typical plate spans there are, the more accurate the results are; but from the perspective of calculation complexity, the equivalent load of each typical plate requires multiple iterations, and the number of typical plates selected directly affects the subsequent calculation amount. Therefore, in the typical plate method, it is impossible to meet both the accuracy and efficiency of the results at the same time, and this problem requires designers to make a trade-off.

[0005] 2) The solved load value needs to be manually assigned to the corresponding slab mid-span of the model. This workload is acceptable for small-volume models, but when the basement is large or the driveway shape is complex, manual arrangement often takes a huge amount of time.

[0006] 3) When only part of the slab span is located within the lane, it cannot reach the most unfavorable situation. However, the typical slab method does not take this factor into consideration and assumes that all slabs reach the most unfavorable situation, which overestimates the load and causes redundant reinforcement. Summary of the invention

[0007] In order to overcome the defects in the prior art, the present invention provides a parameterized calculation and layout method for the equivalent load of a basement roof crane, which realizes the automation of the calculation and layout of the equivalent load of the roof crane and reduces the calculation error.

[0008] In order to achieve the above-mentioned object, the present invention provides a method for parametric calculation and arrangement of equivalent load of a basement roof. The basement roof includes a plurality of spliced ​​plate bodies. The method for parametric calculation and arrangement of equivalent load includes the following steps:

[0009] Obtain basement model, lane plan drawings and vehicle information;

[0010] Load the lane plan drawing and basement model in the parametric platform, obtain the lane range area in the lane plan drawing, and determine whether each plate body of the basement roof falls within the lane range area;

[0011] Screen out the plates that fall within the lane range, extract the corresponding plate span information and substitute it into the corresponding fitting formula to solve and obtain the equivalent load value;

[0012] According to the equivalent load value, the reinforcement information of the corresponding plate in the basement model is automatically updated.

[0013] Preferably, when judging whether each plate body of the roof of the basement falls within the driving lane range area, characteristic points of the plate body to be judged are extracted, and it is judged whether the characteristic points fall within the driving lane range area.

[0014] Preferably, after determining whether the characteristic point falls within the driving lane range area, the equivalent load value is solved for the plate that falls within the driving lane range area to assign a driving constant live load to the plate, and a general constant live load is assigned to the plate that does not fall within the driving lane range area.

[0015] Preferably, before automatically updating the reinforcement information of the corresponding plate in the basement model, the equivalent load value obtained by solving is optimized, including load reduction and coefficient amplification.

[0016] Preferably, when performing load reduction, the positional relationship between the lane and the plate is examined, and the load reduction value of the plate is obtained through the characteristic points.

[0017] Preferably, the types of the plate body include one-way plates and two-way plates, and the fitting formula is determined according to the following method:

[0018] Collect plate sample data, use the control variable method to perform finite element simulation analysis on plate span ratio, span length and vehicle type, and draw conclusions through fitting, including

[0019] When the vehicle type remains unchanged and the span ratio is fixed, the equivalent load value and the plate edge size are in a monotonically decreasing function relationship;

[0020] When the vehicle type remains unchanged and the span ratio is not fixed, the equivalent load value of the one-way slab is in an increasing functional relationship with the span ratio;

[0021] When the vehicle type remains unchanged and the plate-span ratio is not fixed, the equivalent load value of the two-way plate is in a decreasing functional relationship with the plate-span ratio;

[0022] Based on the above conclusions, different fitting formulas are determined, and the sample data are substituted into the fitting formula to solve the coefficients of the corresponding fitting formula.

[0023] Preferably, when screening out the board bodies falling into the lane range area, extracting the corresponding board span information and substituting it into the corresponding fitting formula, the specific operation process includes:

[0024] Extract the span information of each plate body and calculate the corresponding span ratio;

[0025] Determine the type of plate according to the calculation results of the plate span ratio;

[0026] The span information of the slab body of the one-way slab type is substituted into the one-way slab fitting formula, and the span information of the slab body of the two-way slab type is substituted into the two-way slab fitting formula.

[0027] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0028] 1) It shortens the time required for structural verification of the top plate driving area, saves construction time and improves construction efficiency.

[0029] 2) Through the control variable method, combined with the equivalent load principle, and with the help of the YJK-GAMA parametric platform, the automation of equivalent load calculation and arrangement is realized, the results are more accurate, the reinforcement redundancy is reduced, and the cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 The present invention is an algorithm flow chart of the parametric calculation and arrangement method of the equivalent load of the basement roof according to the embodiment of the present invention. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] See also Figure 1 As shown, an embodiment of the present invention provides a method for parametric calculation and arrangement of equivalent load of a basement roof. The basement roof includes a plurality of spliced ​​plate bodies. The method for parametric calculation and arrangement of equivalent load includes the following steps:

[0034] 1) Obtain the basement model, lane plan and vehicle information.

[0035] 2) Load the lane plan drawing and the basement model in the parametric platform, obtain the lane range area in the lane plan drawing, and determine whether each plate body of the basement roof falls within the lane range area. It should be noted that in this embodiment, the lane enclosure and model information are extracted with the help of the cards provided by the YJK-GAMA parametric platform, so as to screen out the plates located in the lane. When determining whether each plate body of the basement roof falls within the lane range area, the feature points of the plate body to be determined are extracted, and it is determined whether the feature points fall within the lane range area. If so, the equivalent load value of the plate body is continued to be solved, and the plate body is assigned a driving constant live load. Otherwise, the plate body is assigned a general constant live load.

[0036] 3) Screen out the slabs that fall within the lane range, extract the corresponding slab span information and substitute it into the corresponding fitting formula to solve and obtain the equivalent load value. Preferably, in this embodiment, the types of slabs include one-way slabs and two-way slabs, and the fitting formula is determined according to the following method:

[0037] Collect plate sample data, use the control variable method to perform finite element simulation analysis on the plate span ratio, span length and vehicle type based on the plate sample data, and draw conclusions by fitting, including:

[0038] When the vehicle type remains unchanged and the span ratio is fixed, the equivalent load value and the plate edge size are in a monotonically decreasing function relationship;

[0039] When the vehicle type remains unchanged and the span ratio is not fixed, the equivalent load value of the one-way slab is in an increasing functional relationship with the span ratio;

[0040] When the vehicle type remains unchanged and the plate-span ratio is not fixed, the equivalent load value of the two-way plate is in a decreasing functional relationship with the plate-span ratio;

[0041] Based on the above conclusions, different fitting formulas are determined, and the sample data are substituted into the fitting formula to solve the coefficients of the corresponding fitting formula.

[0042] Furthermore, when the board bodies falling into the lane range area are screened out, the corresponding board span information is extracted and substituted into the corresponding fitting formula, the specific operation process includes:

[0043] Extract the span information of each plate body and calculate the corresponding span ratio;

[0044] Determine the type of plate according to the calculation results of the plate span ratio;

[0045] The span information of the slab body of the one-way slab type is substituted into the one-way slab fitting formula, and the span information of the slab body of the two-way slab type is substituted into the two-way slab fitting formula.

[0046] 4) According to the equivalent load value and in combination with the vehicle information, the corresponding plate reinforcement information in the basement model is automatically updated. It should be noted that before the corresponding plate reinforcement information in the basement model is automatically updated, the equivalent load value obtained by the solution is optimized, including load reduction and coefficient amplification. Preferably, when performing load reduction, the positional relationship between the lane and the plate is examined, and the load reduction value of the plate is obtained through the characteristic points.

[0047] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A method for parametric calculation and arrangement of equivalent loads on a basement roof, wherein the basement roof comprises a plurality of spliced ​​plate bodies, and the method for parametric calculation and arrangement of equivalent loads comprises the following steps: Obtain basement model, lane plan drawings and vehicle information; Load the lane plan drawing and basement model in the parametric platform, obtain the lane range area in the lane plan drawing, and determine whether each plate body of the basement roof falls within the lane range area; Screen out the plates that fall within the lane range, extract the corresponding plate span information and substitute it into the corresponding fitting formula to solve and obtain the equivalent load value; According to the equivalent load value, the reinforcement information of the corresponding plate in the basement model is automatically updated.

2. The method for parameterized calculation and arrangement of equivalent load of a basement roof as claimed in claim 1, characterized in that: When judging whether each plate body of the roof of the basement falls within the driving lane range area, the characteristic points of the plate body to be judged are extracted, and it is judged whether the characteristic points fall within the driving lane range area.

3. The method for parameterized calculation and arrangement of equivalent load of a basement roof as claimed in claim 2, characterized in that: After determining whether the characteristic point falls within the driving lane range, the equivalent load value is solved for the plate that falls within the driving lane range to assign a driving constant live load to the plate, and a general constant live load is assigned to the plate that does not fall within the driving lane range.

4. The method for parameterized calculation and arrangement of equivalent load of a basement roof as claimed in claim 1, characterized in that: Before automatically updating the corresponding plate reinforcement information in the basement model, the equivalent load value obtained by the solution is optimized, including load reduction and coefficient amplification.

5. The method for parameterized calculation and arrangement of equivalent load of a basement roof as claimed in claim 4, characterized in that: When performing load reduction, the positional relationship between the roadway and the plate body is examined, and the load reduction value of the plate body is obtained through characteristic points.

6. The method for parameterized calculation and arrangement of equivalent load of a basement roof as claimed in claim 1, characterized in that: The types of slabs include one-way slabs and two-way slabs. The fitting formula is determined according to the following method: Collect plate sample data, use the control variable method to perform finite element simulation analysis on the plate span ratio, span length and vehicle type, and draw conclusions by fitting, including: When the vehicle type remains unchanged and the span ratio is fixed, the equivalent load value and the plate edge size are in a monotonically decreasing function relationship; When the vehicle type remains unchanged and the span ratio is not fixed, the equivalent load value of the one-way slab is in an increasing functional relationship with the span ratio; When the vehicle type remains unchanged and the span ratio is not fixed, the equivalent load value of the two-way slab is in a decreasing functional relationship with the span ratio; Based on the above conclusions, different fitting formulas are determined, and the sample data are substituted into the fitting formula to solve the coefficients of the corresponding fitting formula.

7. The method for parameterized calculation and arrangement of equivalent load of a basement roof as claimed in claim 6, characterized in that: When screening out the plates that fall into the lane range, extracting the corresponding plate span information and substituting it into the corresponding fitting formula, the specific operation process includes: Extract the span information of each plate body and calculate the corresponding span ratio; Determine the type of plate according to the calculation results of the plate span ratio; The span information of the slab body of the one-way slab type is substituted into the one-way slab fitting formula, and the span information of the slab body of the two-way slab type is substituted into the two-way slab fitting formula.

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