分段张弦梁结构承载能力研究

Loading Capacity of Segment Tensioned Beam String Structures

优越的受力性能使张弦梁结构在工业及民用建筑工程中得到了广泛应用。但张弦结构存在跨中梁高过大,难以满足某些场合的建筑设计要求的缺点。为了能够既利用张弦梁结构的优点,又避开跨中梁高过大的缺点,提出分段张弦结构的设计概念,利用SAP2000有限元程序,对分段张弦结构和传统张弦结构在使用荷载下的内力、位移性态以及极限承载能力进行了分析比较,并根据分析中反映出的问题,对分段张弦结构进行了优化改良,得到了一种力学性能均较为优越的分段张弦梁结构。

Beam string structures（BSS） are widely used in civil engineering for its excellent structural performance.But on some occasions,use of BSS is not suggested according to architectural requirements,because the mid-structure depth of the BSS is often too large.In order to exploit to the structural advantages of the BSS and avoid its disadvantages mentioned above,a new beam string structure concept,named segment tensioned beam string structures,was proposed in this paper.The loading behavior of the segment tensioned beam string structure under service load and its ultimate load-bearing capacity were analyzed and compared with ones of a traditional beam string structure by using SAP2000 software.Based on the numerical results,the segment tensioned beam string structure was improved.A new improved segment tensioned beam string structure was obtained,which has better performances in various structural aspects.