预应力钢结构中拉杆的张拉和检测方法  

METHODS FOR PRE-TENSION AND MONITORING OF TENSILE RODS IN PRE-STRESSED STEEL STRUCTURE

作　　者：尚仁杰[1] 吴转琴[1] 周建锋[1] 王波[1] 宫锡胜[1] 

机构地区：[1]中冶集团建筑研究总院,北京100088

出　　处：《建筑技术》2007年第12期905-908,共4页Architecture Technology

摘　　要：北京西环广场屋顶钢结构预应力不锈钢拉杆施工中,对于小直径(如D≤40mm)预应力拉杆采用数显扭矩扳手进行张拉;制订了用振弦法检测拉杆拉力的预应力拉杆检测方法和计算公式,该公式考虑了拉杆的抗弯刚度;还提出了施工阶段扭矩控制张拉方法和使用阶段振弦法检测拉力的检测方法。In the construction of pre-tensioned stainless steel rods in the roof steel structure of Beijing Xihuan Plaza, digital torque spanner was used to pre-tension small-diameter rods （D≤40mm）. A formula is established for testing the pre-tensioned rods by vibration method, which has taken into account rod＇s flexural rigidity. It also presents a method for controlling pre-tension by torque in construction phase and that for measuring tensile force by means of vibration in operation period.

关 键 词：预应力 振动频率 张拉 

分 类 号：TU391[建筑科学—结构工程]