预应力管桩与承台连接性能试验研究

An Experimental Study of the Connective Performance of the Pre-Stressed Reinforced Concrete Pipe Pile with the Pile Cap

根据国标图集《预应力混凝土管桩》,结合具体工程,现场对单桩和单桩与承台共同受力两种情况,进行了水平承载力试验研究。对比分析了单桩和单桩与承台共同受力试验曲线和成果、分析了单桩与承台连接节点处钢筋受力性能。单桩与承台连接,采用管内设连接钢筋方式是可行的,管桩内的插筋起到了很好的约束作用。

In the light of the Collection of National Standard Drawings of 《Pre-stressed Concrete Pipe Piles》, and with specific projects as practical examples,the lateral bearing situations of a single pile and a single pile with the pile cap are respectively ex- perimentally studied at the site. The experimental force curves and results of the pile without the cap and the pile with the cap are compared and analyzed in the paper,with the mechanical properties of the cap and the reinforcing bars connecting the pile with the cap analyzed. From the above-mentioned studies it is found that the provision of the connective reinforcement inside the pipe is feasible when a single pile is connected with the cap because the the reinforcement provided inside the pipe pile plays a very good role in restraints.