摘要
随着高速公路不断发展,无桥头锥坡现浇挡墙泡沫混凝土轻质路堤与传统做法相比,可以大幅度地降低填土荷载,减少软基的附加应力,抑制软基的沉降和侧移,提高路堤的稳定性。缓解桥台与路基结合部材料的刚性突变。彻底消除填料自身的压缩沉降,施工便捷,施工占地小,作业面小。泡沫混凝土自身能够自立,对桥台结构物几乎没有推挤作用,因而可取消台前锥坡,增大桥底下空间,可减少桥梁长度。与传统施工方法相比具有施工速度快、质量便于控制、综合节约造价比例较高等优点,达到了设计预期的效果,综合节约造价16%左右,提前工期30天,取得了显著的经济和社会效益。
With the continuous development of the expressway,the light embankment of the cast-in-place retaining wall with no bridge head and the cast-in-place retaining wall of the bridge head can greatly reduce the filling load,reduce the additional stress of the soft foundation,restrain the settlement and the side shift of the soft foundation,and improve the stability of the embankment.And the rigid mutation of the abutment and the subgrade joint material is relieved.And the construction is convenient,the construction area is small,and the working surface is small.The foam concrete can self-support and has little pushing action on the abutment structure,so that the front cone slope of the platform can be eliminated,the space under the bridge can be increased,and the length of the bridge can be reduced.Compared with the traditional construction method,the method has the construction speed,The invention has the advantages of being quick,the quality is convenient to control,the cost ratio of the comprehensive cost is high and the like,the expected effect is achieved,the comprehensive cost is saved by about 16%,the construction period is 30 days,and remarkable economic and social benefits are obtained.
作者
杨晓红
贺鸿飞
Xiaohong Yang;Hongfei He(Zhejiang Jiaogong Hongyuan Traffic Construction Co.,Ltd.,Hangzhou 3100512,China;Panan Chengye Construction Engineering Co.,Ltd.Jinhua 324000,China;Changshan Anxin Construction Co.,Ltd.Quzhou 324000,China)
出处
《青海交通科技》
2019年第6期44-48,共5页
Qinghai Transportation Science and Technology
关键词
无桥头锥坡
现浇挡墙
泡沫混凝土
轻质路堤
施工技术
cone slope without bridgehead
cast-in-place retaining wall
foam concrete
light embankment
construction technology
