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STATISTICAL ANALYSIS OF LOADS OF SUPPORTING STRUCTURE FOR TALL AND LARGE FALSEWORK DURING CONSTRUCTION
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摘要: 通过对高大模板支撑体系施工期荷载的现场调查以及统计分析发现,任意时刻新浇注混凝土自重值服从正态分布,其平均值和变异系数随混凝土龄期的不断增长虽有所波动,但总体趋势不断减小并趋于稳定;施工人员及设备荷载分布明显成偏态,具有指数分布的基本特征,指数分布可以较好地描述施工期间高支模体系荷载的分布情况。参照结构正常使用阶段荷载标准值的取法,给出高大模板支撑体系施工期荷载的取值建议。通过对典型工程高支模体系的受力进行跟踪监测,验证了荷载建议取值的正确性。研究结果可用于高支模体系的设计和安全控制,为相关规范的制定与修订提供可靠依据。Abstract: In this paper,a survey on loads of supporting structure for tall and large falsework during construction has been conducted.It is found that the deadweight of new-cast concrete obeying normal distribution.Although there is fluctuation in the average value and coefficient of variation of deadweight of new-cast concrete,its overall trend is ever-reduced and becomes stable;the distribution of construction personnel and equipment load obeying skew distribution and has the basic characteristics of exponential distribution.The exponential distribution can describe loads of supporting structure for tall and large falsework during construction.Referring the method of choosing the standard value of loads in service phase,the standard value of loads of supporting structure for tall and large falsework during construction is suggested.According to tracking and monitoring the force of supporting structure for tall and large falsework of typical projects during construction,it can verify the correctness of recommended values of loads.The results can be used for design and safety control of supporting structure for tall and large falsework,and provide a reliable basis for formulation and revision of the relevant norms.
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