超重及超跨长现浇框架梁底模预拱度的控制

摘要

The thesis introduces the importance of rationally setting bottom beam pre-arch. Combining with specific examples,it studies major factors influencing pre-arch setting,calculates vertical deflection and load,and finally points out that:rationally setting pre-arch can improve the accuracy of standard bottom beam height. Thus,it guarantees the quality safety of extra-heavy and extra-long-span cast-in-situ beam structure.%简述了合理设置梁底模预拱度的重要性，结合具体实例，对影响预拱度设置的主要因素进行了研究，并通过对竖向挠度、荷载等的分析计算，指出设置合理的预拱度可提高梁底楼面标高的准确度，从而保证了超重、超跨长现浇梁结构的质量安全。