陈金锋^1,2，  江世永²，  田志敏³，  邓楚键²，  朱建凯²
（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)

[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)充填钢榜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。
[关键词] SLP复合构件；聚氨酯；有限元；受弯性能

Analysis of SLP member with filling compared with SLP hollow member under bending load
Chen Jinfeng1,2, Jiang Shiyong2，Tian Zhimin3, Deng Chujian2, Zhu Jiankai2
(1 Key Laboratory of Structural Engineering and Vibration of Ministry of Education, Tsinghua Univeisity, Beijing 100084, China; 2 Logistic Enginering University, Chongqing 400041, China; 3 The Fourth Engineering Dasign and Research Instiute of General Staff Engineering Corps, Beijing 100850, China)

Abstract: SLP hollow member is steel panel's framework, and SLP member with filling is steel panels framework filled with polyurethane foams. The two composite member's bending performance was probed in detail by finite elenlent means through contrast analysis. And the result was comparecl with experinentations 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 rigiclty 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 wih polyurethane foams is enhanced because the local flections of armor plate and steel bar were confined and postponed with its effective restrict effect, and its mechanical and distorthnal performance weie improved.
Keywords: SLP composite member; polyurethane; finite element; tension performance