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1 工程实例1.1 工程概况被检工程为国贸大厦裙房,位于松江区中山路58号,为5层框架结构裙房。混凝土设汁强度:1、2层为 C40,3、4层为C30,采用商品混凝土。原结构施工于1996年7～10月。因业主欲将其使用功能改为综合娱乐中心,故其恒荷载及活荷载均要相应增大,为此必须对原结构进行加固改造。为节约工程造价,业主希望尽量减少加固工程中对原结构的改动,因此,设计方及业主提出检测加固区域(9-11轴,B-J 轴)1～4层结构混凝土的现场强度,为加固设汁准确提供原结构的混凝土强度质量参数。1.2 测区布置根据规范,按同批购件数量的30％抽取检测构件,检测内容为:1～4层加固区域(9-11轴 B-J 轴)各测10根框架柱,结构第5层楼丽加固区域(9-11轴 B-J 轴)删10根梁。鉴于该框架结构柱点跨距较大,且柱高亦较大,构件测
An example of the project 1.1 Project Overview Project was seized Prudential International Trade Building, located in Zhongshan Road, Songjiang District 58, is a five-story frame structure podium. Strength of concrete design juice: 1,2 layers of C40, 3,4 layers of C30, the use of commercial concrete. The original structure construction in July 1996 to October. Due to the owners want to use their functions into an integrated entertainment center, so the constant load and live load should be a corresponding increase, for which the original structure must be rebuilt. In order to save the construction cost, the owner hopes to minimize the change of the original structure in the reinforcement project. Therefore, the design party and the proprietor propose to measure the site strength of the 1 ~ 4-layer structural concrete in the reinforced area (9-11 shaft and BJ shaft) The juice accurately provides the concrete strength quality parameters of the original structure. 1.2 The layout of the survey area According to the specifications, according to the same batch of 30% of the purchase quantity of the inspection component, the inspection contents are as follows: 1 ~ 4 layers of reinforced area (9-11 axis BJ axis) Each measured 10 frame columns, the structure of the fifth floor Li reinforced area (9-11 axis BJ axis) delete 10 beams. In view of the large span of the frame structure column points, and the column height is also larger, component measurement