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通过现场实测 ,力图全面准确地把握钢筋混凝土结构在施工期的基本特征。特别介绍在施工现场采用多种量测手段较全面地对结构施工过程中的荷载、材料、内力、变形等特征进行的全周期量测 ,以及捕捉到的重要现象。通过对现场实测数据的分析和讨论 ,获得了结构在施工过程中的基本特征以及荷载传递的规律。发现楼板随着新浇混凝土强度和刚度的增长 ,在环境温度变化、混凝土早期徐变等作用下 ,将逐渐承担其结构自重 ,从而使整个结构的荷载不断地进行重新分配
Through the field measurement, trying to fully and accurately grasp the basic characteristics of reinforced concrete structures in the construction period. In particular, full-cycle measurements of the loads, materials, internal forces, deformations and other characteristics during the construction of the structure are comprehensively introduced by means of various measuring instruments at the construction site, as well as the important phenomena captured. Through the analysis and discussion of the field measured data, the basic characteristics of the structure in the construction process and the law of load transfer are obtained. It is found that with the increase of the strength and stiffness of the newly poured concrete, under the influence of the change of ambient temperature and early creep of concrete, the load of the whole structure will be gradually re-allocated