CN-121981438-A - Steel pipe configuration method and equipment for fastener type steel pipe bent

CN121981438ACN 121981438 ACN121981438 ACN 121981438ACN-121981438-A

Abstract

The invention provides a steel tube configuration method and equipment for a fastener type steel tube bent, which are based on a greedy algorithm of long tube priority and long and short tube collocation, and effectively solve the problems of high leasing cost caused by a plurality of short tube specifications, redundant quantity and low material utilization rate due to traditional manual configuration by introducing a dynamic programming global optimization model based on multi-candidate configuration. The method provided by the invention can be close to an optimal configuration scheme under the dual targets of the longest main steel pipe and the least short pipe, so that the comprehensive utilization rate of materials is obviously improved, diversified choices considering economy and construction convenience are provided for construction decision makers, and the conversion of resource configuration of the bent steel pipes from experience-dependent configuration to scientific configuration is realized. The invention can realize the scientific configuration of the steel pipe, give out the optimal combination so as to achieve the purposes of improving the material utilization rate and saving the lease cost, and solve the problems of excessive short pipe specifications, redundant quantity and low utilization rate in the prior art.

Inventors

SU GUANNAN
HAN ZHENHUA
ZHANG CHUNTAO
YIN TINGTING
XU PENG

Assignees

上海建工集团股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251225

Claims (10)

1. A steel pipe configuration method of a fastener type steel pipe bent is characterized by comprising the following steps: based on the three-dimensional model of the building structure, the templates and the size information of the constructional elements, obtaining a pole setting point position length requirement set corresponding to the net height of each pole setting point position; Based on project site conditions, a supplier specification library and standard requirements as inputs, obtaining a classified steel pipe specification product library; Obtaining a theoretical steel pipe length requirement set and various steel pipe specification sets based on the length requirement set of the vertical rod point position and the specification product library of the steel pipe; Basic steel pipe specification sets, and determining single steel pipe configuration length standards and double steel pipe combination configuration length standards; Based on a theoretical steel pipe length requirement set, various steel pipe specification sets, single steel pipe configuration length standards and double steel pipe combination configuration length standards, sequentially matching each candidate steel pipe configuration scheme for each steel pipe net length li; Screening out globally optimized steel pipe configuration schemes from all candidate steel pipe configuration schemes corresponding to the net length of the steel pipe; The candidate steel pipe configuration schemes and the globally optimized steel pipe configuration schemes are integrated, different scheme lists containing steel pipe specifications and numbers are generated, transverse comparison is facilitated, and the globally optimized steel pipe configuration schemes are used as the erection basis of the bent frame.
2. The method for arranging steel pipes of a fastener type steel pipe bent according to claim 1, wherein the standard product library of the classified steel pipes comprises standard pipes, non-standard pipes, short steel pipes and short connection pipes.
3. The method of arranging steel pipes of a fastener type steel pipe bent according to claim 2, wherein the theoretical steel pipe length requirement set Lt is lt= { l1, l2, & gt, li, & gt, ln }, wherein li is the net length of the steel pipe required for the ith pole setting; all kinds of steel pipe specification collection includes: Standard tube s= {1.8,2.7,3.6,4.5,6.0}; Non-punctuation n= {1.5,1.6,2.0,2.6,3.0,3.2,3.3,4.0}; Short steel pipe b= {0.5,0.6,0.8,1.0,1.2}, short pipe c= {0.2,0.3,0.4}.
4. A method of configuring steel pipes of a fastener type steel pipe bent as claimed in claim 3, wherein the determining of the single steel pipe configuration length standard and the double steel pipe combination configuration length standard from the basic set of various steel pipe specifications comprises: basic steel pipe specification sets (S, N, B, C) to obtain corresponding steel pipe configuration rules, Obtaining a single steel tube configuration length standard Pi (1) based on the steel tube configuration rule, the steel tube net length li, the standard tube set S, the non-standard tube set N and the maximum allowable redundancy delta; and obtaining a double-steel-tube combined configuration length standard Pi (2) based on the steel tube configuration rule, the steel tube net length li, the standard tube set S, the non-standard tube set N, the short steel tube set B, the short joint tube set C and the maximum allowable redundancy delta.
5. The method for arranging steel pipes of a fastener type steel pipe bent according to claim 4, wherein the basic steel pipe specification set (S, N, B, C) is obtained by obtaining a corresponding steel pipe arrangement rule, comprising: For any net length li of steel pipes in the steel pipe length requirement set Lt, the actually configured steel pipe combination is an orderly combination of various steel pipe specification sets (S, N, B, C), and the number Pi of the steel pipes in the steel pipe combination meets the following conditions: Pi-2, i.e., a main steel pipe and a short steel pipe or nipple, wherein the main steel pipe is from a standard pipe set S or a non-standard pipe set N, and the short steel pipe is from a short steel pipe set B or nipple set C.
6. The steel pipe arrangement method of the fastener type steel pipe bent according to claim 1, wherein the single steel pipe arrangement length standard Pi (1) is: Pi (1) = { { S } |s e S u N, 0≤s-li≤δ }, δ being the maximum allowable redundancy; the double steel pipe combination configuration length standard Pi (2) is: Pi(2)={{a,b}∣a∈S∪N,b∈B∪C,b<a,0<(a+b)-li≤δ}。
7. The method of claim 6, wherein the matching of each candidate steel pipe configuration scheme for each net length li of steel pipes in turn based on a theoretical steel pipe length requirement set, a set of steel pipe specifications, a single steel pipe configuration length standard, and a double steel pipe combined configuration length standard, comprises: traversing the net length li of the steel pipes, based on the corresponding single steel pipe configuration length standard Pi (1), and distributing the main steel pipe which is preferentially matched with each net length li of the steel pipes to the candidate steel pipe configuration scheme which is directly distributed to the corresponding net length li of the steel pipes if the matched main steel pipe meets the single steel pipe configuration length standard Pi (1) and is larger than the net length li of each steel pipe and is closest to the net length li of each steel pipe; Traversing the net lengths of steel pipes li, and distributing candidate steel pipe configuration schemes of the combination of the main steel pipe and the short steel pipe or the short pipe for each net length of the steel pipe based on the corresponding single steel pipe configuration length standard Pi (2).
8. The method of arranging steel pipes of a fastener type steel pipe bent according to claim 1, wherein the step of screening out globally optimized steel pipe arrangement schemes from among the candidate steel pipe arrangement schemes corresponding to the net length li of the steel pipes comprises: screening out the steel pipe configuration scheme with the lowest cost for covering all the upright rod positions and the highest material utilization rate from all candidate steel pipe configuration schemes corresponding to the net length li of the steel pipe, wherein the highest material utilization rate is the longest main steel pipe and the least short pipe utilization rate as the globally optimized steel pipe configuration scheme, The cost of each upright post point position is calculated as follows: defining the required point of each steel pipe length, namely the upright rod point position i, and defining the configuration cost function of the point position steel pipe: wherein P is a candidate steel pipe configuration scheme of a certain upright pole point i; |p| is the total number of steel pipes configured; is an indication function, when short pipes are used in configuration, and the intersection of P, the short pipe set B and the short pipe set C is not empty, the function value is 1, otherwise, the function value is 0; ω1, the cost weight of a single steel pipe; omega 2, the weight of the short pipe; 0<ω2<ω1; D p [ i ] [ r ] is defined as the minimum cost when the use amount of the steel pipes with the first i upright rod points and each specification is r; d p [i][r]＝min{d p [i-1][r-vec(P)]+cost(P)}; d p [ i ] [ r ] represents the corresponding minimum configuration cost when the first i upright rod points are considered and the total length of the steel pipes of each specification is r, and when the minimum cost of the ith upright rod point is calculated, the minimum cost when the lengths of the rest steel pipes are r-vec (P) from the first i-1 upright rod points is added with the cost of the steel pipe configuration scheme P selected by the ith upright rod point, and then the minimum value in all possible schemes is taken; vec (P) is the total length of the steel pipe arrangement.
9. A computer-readable storage medium having stored thereon computer-executable instructions, wherein execution of the computer-executable instructions by a processor causes the processor to perform the method of any one of claims 1 to 8.
10. A calculator device, comprising: processor, and A memory arranged to store computer executable instructions that, when executed, cause the processor to perform the method of any one of claims 1 to 8.

Description

Steel pipe configuration method and equipment for fastener type steel pipe bent Technical Field The invention relates to the technical field of building construction, in particular to a steel pipe configuration method and equipment for a fastener type steel pipe bent. Background In construction engineering, the fastener type steel pipe bent system is widely applied to formwork support under the plate and the beam. In traditional construction, the configuration of the steel pipes depends on experiences of wood turning engineers and teams, the typical cross steel pipe configuration is generally adopted to estimate the overall configuration consumption, the manual calculation efficiency is low, the steel pipe configuration is often excessive in specification, redundant in quantity, low in utilization rate and large in consumption deviation, and the management and lease costs of the steel pipes and the complexity of splicing are increased. Disclosure of Invention The invention aims to provide a steel pipe configuration method and equipment for a fastener type steel pipe bent. In order to solve the above problems, the present invention provides a steel pipe arrangement method for a fastener type steel pipe bent, comprising: based on the three-dimensional model of the building structure, the templates and the size information of the constructional elements, obtaining a pole setting point position length requirement set corresponding to the net height of each pole setting point position; Based on project site conditions, a supplier specification library and standard requirements as inputs, obtaining a classified steel pipe specification product library; Obtaining a theoretical steel pipe length requirement set and various steel pipe specification sets based on the length requirement set of the vertical rod point position and the specification product library of the steel pipe; Basic steel pipe specification sets, and determining single steel pipe configuration length standards and double steel pipe combination configuration length standards; Based on a theoretical steel pipe length requirement set, various steel pipe specification sets, single steel pipe configuration length standards and double steel pipe combination configuration length standards, sequentially matching each candidate steel pipe configuration scheme for each steel pipe net length li; Screening out globally optimized steel pipe configuration schemes from all candidate steel pipe configuration schemes corresponding to the net length of the steel pipe; The candidate steel pipe configuration schemes and the globally optimized steel pipe configuration schemes are integrated, different scheme lists containing steel pipe specifications and numbers are generated, transverse comparison is facilitated, and the globally optimized steel pipe configuration schemes are used as the erection basis of the bent frame. Further, in the method, the standard product library of the classified steel pipes comprises standard pipes, non-standard pipes, short steel pipes and short connection pipes. Further, in the above method, the theoretical steel pipe length requirement set Lt is lt= { l1, l2, & gt, li, & gt, ln }, wherein li is the steel pipe net length required for the ith pole setting point; all kinds of steel pipe specification collection includes: Standard tube s= {1.8,2.7,3.6,4.5,6.0}; Non-punctuation n= {1.5,1.6,2.0,2.6,3.0,3.2,3.3,4.0}; Short steel pipe b= {0.5,0.6,0.8,1.0,1.2}, short pipe c= {0.2,0.3,0.4}. Further, in the above method, basically, various steel pipe specifications are collected, and determining a single steel pipe configuration length standard and a double steel pipe combination configuration length standard includes: basic steel pipe specification sets (S, N, B, C) to obtain corresponding steel pipe configuration rules, Obtaining a single steel tube configuration length standard Pi (1) based on the steel tube configuration rule, the steel tube net length li, the standard tube set S, the non-standard tube set N and the maximum allowable redundancy delta; and obtaining a double-steel-tube combined configuration length standard Pi (2) based on the steel tube configuration rule, the steel tube net length li, the standard tube set S, the non-standard tube set N, the short steel tube set B, the short joint tube set C and the maximum allowable redundancy delta. Further, in the above method, the basic steel pipe specification set (S, N, B, C) is a corresponding steel pipe configuration rule, including: For any net length li of steel pipes in the steel pipe length requirement set Lt, the actually configured steel pipe combination is an orderly combination of various steel pipe specification sets (S, N, B, C), and the number Pi of the steel pipes in the steel pipe combination meets the following conditions: Pi-2, i.e., a main steel pipe and a short steel pipe or nipple, wherein the main steel pipe is from a standard pipe set S or a non-standard pipe set