圆竹装配式房屋的试验研究和实践

EXPERIMENTAL RESEARCH AND CONSTRUCTION OF PREFABRICATED BAMBOO POLE DEMONSTRATION HOUSE

圆竹材因其特殊的外形和结构性不适应建筑工程的要求,因而在建筑结构领域内的研究和应用基本上处于空白状态。以我国丰富的毛竹作为结构材料,对其进行大量的材性试验和分析。研究结果表明,经过合理选材,圆竹的基本力学指标高于TC13级针叶木材,可以作为结构材料使用。通过设计的几种圆竹构件和结构的金属连接件,基本实现了圆竹构件加工的标准化和施工的预制化。对2个圆竹墙体进行抗侧力试验,圆竹墙体的抗侧向承载能力约为同类型轻型木结构墙体的65%。对3个圆竹屋架进行了静载试验,屋架的极限承载力由变形控制,平均值为12.3 k N。根据试验结果和GB/T 50329—2002《木结构设计规范》,设计和建造了一个约50 m2的圆竹预制房屋示范建筑,验证了圆竹预制房屋技术的可行性和适用性。

Because of the special shape and structure, bamboo pole is not fit to the requirements of construction industry and therefore its research and use are rare in the field of building structures.Moso bamboo, a kind of rich forest resource in China, was selected as building material and tested.The test results showed that the main mechanical properties of bamboo pole were better than those of coniferous wood of TC13 grade and could be used as structural material.Several types of metal connections were presented for connecting bamboo poles with other materials and it was realized basically the manufacture standardization and prefabrication of bamboo members.The lateral resistance tests of two pieces of shear walls made by bamboo poles were conducted.The lateral resistance capacity of this kind of shear wall was about 65%of that of the same wall of light wood structure.The static tests of three pieces of bamboo pole roof trusses were done and the average ultimate loading capacity was 12.3 kN.A prefabricated bamboo pole demonstration house with construction area of 50 m2 was designed and constructed according to the testing results and code for design of timber structures.