一种用于软弱土地层的钢筋混凝土沉井施工方法技术

本发明专利技术提供一种用于软弱土地层的钢筋混凝土沉井施工方法，具体包括如下步骤：10、清除沉井的井壁刀刃底部的障碍物，通过水源提供水，将水加压到压力大于1.2MPa的高压水；20、利用上述的高压水冲击筒体内的土体，土体破碎后与水枪射出的水混合成泥浆；30、将上述泥浆进行抽吸，输送到沉井筒体外；40、随着沉井筒体内的土面逐渐降低，沉井筒体借其自重不断下沉。本发明专利技术利用水力破土，可避免挖深锅底，减少沉井突沉现象，易于保证沉井施工质量，可有效控制破土程序和位置，能使沉井平稳下沉，便于控制沉井终沉标高，降低工程成本。

Construction method of reinforced concrete open caisson for weak soil layer

The present invention provides a method for reinforced concrete caisson construction method of soft soil layer, and includes the following steps: 10, remove obstacles at the bottom of the caisson wall edge, through the water supply, the water pressure to high pressure water pressure is greater than 1.2MPa; 20, by the impact of high pressure water cylinder mixed into the soil, mud water soil after crushing and gun shot; 30, the mud pump, transported to the caisson barrel in vitro; 40, with the caisson barrel soil surface decreased by its weight, the cylinder caisson sinking. The invention can avoid the use of water through the ground, dig deep bottom, reduce the phenomenon of sudden sinking caisson, open caisson construction is easy to guarantee quality, can effectively control the ground breaking program and position, can make smooth caisson sinking, sinking to control the final sedimentation elevation, reduce the cost of the project.

【技术实现步骤摘要】

【技术保护点】
１．一种用于软弱土地层的钢筋混凝土沉井施工方法，其特征在于，具体包括如下步骤：步骤１０、清除沉井的井壁刀刃底部的障碍物，通过水源提供水，将水加压到压力大于１．２ＭＰａ的高压水；步骤２０、利用上述的高压水冲击沉井筒体内的土体，土体破碎后与水枪射出的水混合成泥浆；步骤３０、将上述泥浆进行抽吸，输送到沉井筒体外；步骤４０、随着沉井筒体内的土面逐渐降低，沉井筒体借其自重不断下沉。

【技术特征摘要】

【专利技术属性】
技术研发人员：周继忠，庄金平，聂小龙，蔡雪峰，
申请(专利权)人：福建工程学院，
类型：发明
国别省市：35