SLP夹芯构件与空心构件受弯性能比较分析  

Analysis of SLP member with filling compared with SLP hollow member under bending load

作　　者：陈金锋[1] 江世永[2] 田志敏 邓楚键[2] 朱建凯[2] 

机构地区：[1]清华大学结构工程与振动教育部重点实验室,北京100084 [2]后勤工程学院,重庆400041 [3]总参工程兵第四设计研究所,北京100850

出　　处：《建筑结构》2008年第10期117-119,共3页Building Structure

基　　金：后勤工程学院2005年度青年科研基金项目(YQ05-43202)

摘　　要：SLP空心构件指的是钢面板-拉筋骨架构件,而SLP夹芯构件指的是硬质聚氨酯泡沫(PURF)充填钢板-拉筋骨架复合而成的构件。运用了有限元计算手段,并与已有的试验结果作对比,分析两种复合构件受弯的应力分布规律、破坏形态以及荷载-位移曲线的特点,结果发现SLP复合构件比空心构件初刚度提高不大,但极限荷载提高达77%,极限荷载对应的位移提高达46%。充填聚氨酯后SLP复合构件性能得到提升的原因是充填的聚氨酯对钢板和拉筋产生有效的约束作用限制并推迟了钢板与拉筋局部屈曲,改善了其受力及变形性能。SLP hollow member is steel panel＇s framework, and SLP member with filling is steel panel＇s framework filled with polyurethane foams. The two composite member＇s bending performance was probed in detail by finite element means through contrast analysis. And the result was compared with experimentations which has been completed. Their stress distributing rule, wrecking form and load-displacement curvilinear characteristic were analyzed. Two major conclusions were got. One is that the early rigidity of SLP composite member was enhanced little, while its ultimate load is enhanced with the rate of 77 %, the rigidity of displacement corresponding is enhanced to the rate of 46 % . The other is that the bending performance of SLP composite member filled with polyurethane foams is enhanced because the local fiections of armor plate and steel bar were confined and postponed with its effective restrict effect, and its mechanical and distortional performance were improved.

关 键 词：SLP复合构件 聚氨酯 有限元 受弯性能 

分 类 号：TU375.101[建筑科学—结构工程] TB333[一般工业技术—材料科学与工程]