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In order to monitor the strain of the cable head,the fiber Bragg grating(FBG) sensor is adopted.

为了对网壳拉索索头进行应变监测,提出了利用光纤Bragg光栅传感技术对拉索索头进行应变测量,利用电阻应变片进行对比试验,并与理论值相比较;同时提出了一种弹性模量测量的新方法。

Based on the existing algorithm and through ascertaining the influence matrix of the tensile force in the construction of oblique pulling rope,the optimized stayed-buckle cable force is calculated at each stage of archrib hoisting phase of a model bridge during construction and the designed requirement is fulfilled through empty steel tube in falling state.

在讨论现有算法的基础上,通过确定斜拉索施工张拉力的影响矩阵,对扣索索力进行了优化。

Non-bracket and Cable erection is the main erecting arch ribs method of a long span concrete-filled steel-tube(CFST) arch bridge recently,but it requires to adjust the cable force over and over again,which increases the degree of construction difficulty and arch axis linear control trouble,delays the project limit time.

无支架缆索吊装法是目前大跨径钢管混凝土拱桥拱肋节段吊装的主要施工方法,此方法在施工过程中须反复调整扣索索力,施工难度大,拱轴线形控制繁琐,工期长。