吹砂围堰施工工艺及对现浇桥梁施工的影响  

Construction Technology of Sand Blowing Cofferdam and Its Influence on Cast-in-Place Bridge Construction

作　　者：孙首正 SUN Shou-zheng(Qingdao Dongche Townlet Investment Group Co.Ltd.,Qingdao 266033,China)

机构地区：[1]青岛动车小镇投资集团有限公司,山东青岛266033

出　　处：《工程建设与设计》2024年第18期179-181,共3页Construction & Design for Engineering

摘　　要：为了解吹砂围堰沉降对现浇桥梁施工的影响,在介绍吹砂围堰力学性能的基础上,结合实际工程进行有限元分析,研究不同龄期、不同沉降条件下桥梁的结构受力,并提出相关控制技术。结果显示,经过分环浇筑后,围堰的沉降量对桥梁中支座截面影响更大,采用吹砂围堰施工控制技术有利于减小围堰沉降,对保持护坡稳定性具有积极作用。In order to understand the influence of the settlement of blown sand cofferdam on the construction of cast-in-place bridge,based on the introduction of the mechanical properties of blown sand cofferdam,combined with the actual project,the finite element analysis is carried out to study the structural stress of bridge under different ages and different settlement conditions,and the relevant control technology is proposed.The results show that the settlement amount of the cofferdam has a greater influence on the cross section of the bridge support after the separate ring pouring.The construction control technology of the sand blown cofferdam is beneficial to reduce the settlement of the cofferdam and has a positive effect on maintaining the stability of slope protection.

关 键 词：现浇连续梁 吹砂围堰 有限元 施工工艺 

分 类 号：TV551.3[水利工程—水利水电工程] U445.556[建筑科学—桥梁与隧道工程]