【摘 要】
：
我在钢筋混凝土工程施工中,发现了一些易被忽略的问题,现介绍如下。一、大跨度梁底模板起拱后,如何控制结构层的标高。规范指出,对现浇钢筋混凝土梁,跨度等于或大于4m时,梁
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我在钢筋混凝土工程施工中,发现了一些易被忽略的问题,现介绍如下。一、大跨度梁底模板起拱后,如何控制结构层的标高。规范指出,对现浇钢筋混凝土梁,跨度等于或大于4m时,梁底模板应起拱;如无设计规定,起拱高度宜为全跨长度的0.1％～0.3％。试分析,如果抵消施工所产生的挠度,拆模后仍有残留在梁上的起拱高度时,
During the construction of reinforced concrete works, I discovered some problems that were easily overlooked. Now I introduce them as follows. 1. How to control the elevation of the structural layer after arching of a large-span beam bottom formwork. The code states that for cast-in-situ reinforced concrete beams, when the span is equal to or greater than 4m, the beam bottom formwork shall be arched; if no design provisions are specified, the height of the arching shall be 0.1% to 0.3% of the full span length. In the analysis, if the deflection caused by construction is offset, there is still the arching height remaining on the beam after the mold is removed.
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