【作者】 周重杨； 杨建荣； 朱伟民； 匙娇；

【Author】 ZHOU Chong-yang;YANG Jian-rong;ZHU Wei-min;SHI Jiao;Kunming University of Science and Technology, Department of Civil Engineering;

【机构】 昆明理工大学土木工程学院；

【摘要】 本文对钢结构梁拱组合体系这种高次超静定结构的落架施工,进行了结构空间线性与内力的监测。对于空间线性的控制采用位移沉降观测的方式,对于内力的监控则采用关键点布置应变计的方法进行实时观测。为了一定程度上抵消温度变化带来的干扰,在对线性和内力的监测中采用全天候,不同时间点的观测,并将实测值与理论值进1行了对比,经比较分析,得出因温度变化引起的沉降和应力变化在整个落架过程中占有极重要的地位,其变化速度较快,且复杂,在今后类似钢构梁拱组合体系桥梁的施工及监控中应引起高度重视。更多还原

【Abstract】 This paper monitored the spatial linear and internal force of the construction of the hypostatic framework structure which is the steel beam and arch combination system. We observed the displacement settlement for the control of the spatial linear and arranged strain gauges at the key points for the real time control of internal force. In order to offset the interference of the temperature change to some extent, we observed in the all-weather and at different time points for the monitoring of linear and internal force and compared the measured values with the theoretical value. After the contrast, we can know that the settlement caused by temperature change and stress change play an important role in the process of frame construction. The speed of the changes is fast and complex. We should value the changes in the construction and monitoring of the similar steel beam and arch combination structure in future.更多还原