后张有粘结预应力混凝土框架的试验方法

A Study on the Test Method for Post-tensioned Prestressed Concrete Frame

针对预应力框架的试验研究 ,介绍了一种新的试验方法。采用该方法的试验中 ,框架柱两柱底间断开 ,利用试验装置约束柱底以模拟柱底的嵌固效果 ,并利用约束装置测出柱底反力。对于试验加载前预应力框架本应存在的预应力次内力及框架自重内力 ,试验中是通过调节柱底的约束装置对框架人工施加反力来实现的。本文简要论述了该试验方法的试验条件和操作方法 ,并从理论上证明 ,采用本试验方法建立起来的预应力框架可以等价于实际工程中的预应力框架。

A creative test method for post-tensioned prestressed frame is presented in this paper. In the test, the stationary supports at the column base are simulated and the forces at the column base can be tested while the two column bases are not connected with concrete beam. The prestressed secondary moment and the weight-produced moment are established by adjusting the support device at the column base. In this paper, the necessary conditions of the method and the basic process are recommended. It is proved theoretically that the prestressed concrete frame built by this method is equivalent to that used in practice.