Study on membrane roof schemes of annular crossed cable-truss structure

Lü, Jun; Xue, Songtao; Li, Xiongyan; Liu, Renjie

doi:10.1177/0956059919887846

Cited by 8 publications

(7 citation statements)

References 2 publications

(4 reference statements)

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“…The progressive collapse ability of SCSWIRC was studied by using LS-DYNA, which reveals the progressive collapse mechanism of SCSWIRC [7]. Lu et al [8] studied the influences of filmcovering on SCSWIRC, and the research results show that the film-covering effect is obvious. But there are hardly any references about construction control of SCSWIRC, and construction control determines the final forming state at the same time.…”

Section: Introductionmentioning

confidence: 99%

Experiment Study on the Influences of Length Errors of Cables and Struts on Spatial Cable-Truss Structure Without Inner Ring Cables

2023

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Spatial cable-truss structure without inner ring cables (SCSWIRC) belongs to tensile structure, which is composed of three kinds of cable, strut and stiff ring-beam, and its stiffness generates from the pre-stresses of cables. The manufacturing errors of the three kinds of components determine the final formed state and ultimate bearing capacity, so it is essential to study the influences of manufacturing errors of three kinds of components on the mechanical property of structure. The influences of manufacturing errors on SCSWIRC have been studied from four aspects that include elongation or shortening of cable and strut, different pre-stresses states, different cable-truss frames and external loads. The relations of manufacturing errors and four aspects have been studied based on finite element model and experimental model. The results show that the elongation and shortening of components has little influence on sensitive indexes of components when the elongation or shortening of components is the same. The manufacturing errors have the different influences on the mechanical property of structure under the different pre-stress states. The closer cable-truss frame is to the error position, the larger influence the error has on cable-truss frame. The external loads have not changed the basic mechanical property of SCSWIRC, but the external loads make upper chord cables easier to loose and make sensitive indexes change more greatly. The research contents reveal the influences of manufacturing errors on the mechanical property of SCSWIRC from the four aspects.

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Section: Introductionmentioning

confidence: 99%

Experiment Study on the Influences of Length Errors of Cables and Struts on Spatial Cable-Truss Structure Without Inner Ring Cables

2023

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“…Up to now, tensile structures have not been limited in cable dome structure. At present, research on tensile structures is mainly concentrated on single cable net structure (Jiang et al, 2015;Zhu et al, 2021), cable dome structure (Gao et al, 2015;Guo and Zhou, 2016), spoke cable-truss structure (Deng et al, 2016;Jeon and Lee, 2000), spatial cable-truss structure without inner cable (SCSWIRC) (Lu et al, 2019;Xue et al, 2017Xue et al, , 2020a, and composted tensile structure (Kitiporuchai et al, 2005), and so on.…”

Section: Introductionmentioning

confidence: 99%

“…, 2015; Guo and Zhou, 2016), spoke cable-truss structure (Deng et al. , 2016; Jeon and Lee, 2000), spatial cable-truss structure without inner cable (SCSWIRC) (Lu et al. , 2019; Xue et al.…”

Section: Introductionmentioning

confidence: 99%

Simplification and further optimization of spatial cable-truss structure without inner ring cables

Lü

Xue

Liu

et al. 2022

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PurposeIn order to optimize SCSWIRC, the simplification and further optimization method is proposed. SCSWIRC's optimization includes two levels. The first level refers to simplifying structural system from the perspective of components; the second level refers to optimizing components' sectional areas from the perspective of mechanics. The first level aims to remove redundant components, and the second level aims to reduce structural self-weight based on the first level. The purpose of the paper is to simplify SCSWIRC's structural system and optimize structural self-weight and reduce construction forming difficulty.Design/methodology/approachGrid-jumping layout and multi-objective optimization method is used to simplify and further optimize Spatial cable-truss structure without inner ring cables (SCSWIRC). Grid-jumping layout is used to simplify remove redundant components, and multi-objective optimization method is used to reduce structural self-weight. The detailed solving process is given based on grid-jumping layout and multi-objective optimization method.FindingsTake SCSWIRC with a span of 100m as an example to verify the feasibility and correctness of the simplification and further optimization method. The optimization results show that 12 redundant components are removed and the self-weight reduces by 3.128t from original scheme to grid-jumping layout scheme 1. The self-weight reduces from 36.007t to 28.231t and feasible coefficient decreases from 1.0 to 0.627 from grid-jumping layout scheme 1 to multi-objective optimization scheme. The simplification and further optimization can not only remove the redundant components and simplify structural system to reduce construction forming difficulty, but also optimize structural self-weight under considering structural stiffness to reduce project costs.Originality/valueThe proposed method firstly simplifies SCSWIRC and then optimizes the simplified SCSWIRC, which can solve the optimization problem from the perspective of components and mechanics. Meanwhile, the optimal section solving method can be used to obtain circular steel tube size with the optimal stiffness of the same areas. The proposed method successfully solves the problem of construction forming and project cost, which promotes the application of SCSWIRC in practical engineering.

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“…Meanwhile, planar cable-truss frame shares common characteristics, such as light weight, high stiffness, large-spanning ability and rapid construction speed. At present, cabletruss tensile structures mainly include: spoke cable-truss structure [7,8], spatial cable-truss structure without inner ring cables (SCSWIRC) [9,10], and so on.…”

Section: Introductionmentioning

confidence: 99%

Study on Static and Dynamic Experiment of Spatial Cable-Truss Structure Without Inner Ring Cables Based on Grid-Jumped Layout of Struts

2022

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Cable-truss tensile structures are one of the most imperative types of spatial structures, and a spatial cable-truss structure without inner ring cables (SCSWIRC) is a new type of cable-truss tensile structure. Although SCSWIRC has a strong anti-collapse capacity, its construction forming is difficult. Based on the concept of grid-jumped layout for struts, the experimental model with a span of 6 m is designed, and then three grid-jumped layout schemes are proposed to simplify structure system. The static and dynamic properties of experimental and finite element models are systematically studied. The results show that experimental values agree with simulation values. The errors of the static experiment are in the range of 6%~11.53% and the errors of the dynamic experiment are in the range of 5%~8%. The grid-jumped layout has negligible effects on the internal forces of cables. However, it has excellent effects on the internal forces of struts and nodal displacements at the grid-jumped layout, so the mechanical property of struts needs to be rechecked after grid-jumped layout. The mechanical property of the optimal grid-jumped layout scheme does not change compared with original scheme. The optimal grid-jumped layout scheme not only simplifies SCSWIRC, but also reduces the amount of steel. The study can promote the application of SCSWIRC in practical engineering.

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Study on membrane roof schemes of annular crossed cable-truss structure

Cited by 8 publications

References 2 publications

Experiment Study on the Influences of Length Errors of Cables and Struts on Spatial Cable-Truss Structure Without Inner Ring Cables

Experiment Study on the Influences of Length Errors of Cables and Struts on Spatial Cable-Truss Structure Without Inner Ring Cables

Simplification and further optimization of spatial cable-truss structure without inner ring cables

Study on Static and Dynamic Experiment of Spatial Cable-Truss Structure Without Inner Ring Cables Based on Grid-Jumped Layout of Struts

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