部分波形钢腹板预应力连续组合梁性能分析

针对预应力钢-混凝土连续组合梁负弯矩区混凝土板预应力效率低、钢腹板易发生局部屈曲等问题，提出了在负弯矩区梁段采用波形钢腹板代替平面钢腹板的混合设计方法.采用理论计算和有限元分析方法，对部分波形钢腹板预应力连续组合梁的受力和变形性能进行分析，并与传统的预应力连续组合梁对比.研究结果表明，混合设计方法充分利用波形钢腹板轴向刚度低、抗屈曲能力强的特点，显著提高连续组合梁负弯矩区混凝土板的预应力效率和开裂荷载，尤其适用于大、中跨径的预应力连续组合梁结构.

Analysis of the Behaviors of Prestressed Steel-concrete Continuous Composite Beam with Partial Corrugated Steel Webs

To solve the problems of low prestressed efficiency in concrete slab and local buckling of steel web in hogging moment region of prestressed steel-concrete continuous composite beams (PCB), a hybrid design method with the corrugated steel webs in hogging moment region instead of plane steel webs was proposed. The force and deformation behaviors of prestressed steel-concrete continuous composite beams with partial corrugated steel webs (PCBW) were studied by theoretical calculation and finite element analysis and were compared with PCB. The research results demonstrate that the hybrid design method can take full advantage of the low axial stiffness and excellent anti-buckling ability of corrugated steel webs, improve the prestressed efficiency and the cracking load in concrete slab. PCBW is particularly suitable for long and medium-span prestressed continuous composite beam structures.