A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Novel dewatering method for deep foundation pit close to existing building
The invention discloses a novel dewatering method for a deep foundation pit close to an existing building. The novel dewatering method specifically includes the steps that step one, construction preparation is conducted, a site is leveled, a total station is used for lofting a well position, and a blowdown system is built; step two, a well position is measured and an exploratory well is dug, the well position is measured according to actual requirements, and according to the setting-out position of a dewatering well, the distance between the center position of the dewatering well and the center of a fender post is 1.4 m, and the distance between the center position of the dewatering well and the edge of the foundation pit is 2.0 m, if the surrounding range and other conditions are limited, the requirements cannot be met, the dewatering well is arranged between the fender posts or in the foundation pit; and step three, a protection opening pipe is buried, a protection barrel is accurately and stably buried according to a pile position determined through measurement, and two grout overflowing openings are formed in the top of the protection barrel and are 20 cm higher than the ground. According to the novel dewatering method for the deep foundation pit close to the existing building, the problems that in the subway construction process, due to the fact that an environment nearby a station site is complex, and an underground water system and nearby buildings are staggered, the construction efficiency is low, and the dewatering sedimentation effect is poor can be effectively solved.
本发明公开一种新型临近既有建筑物深基坑降水方法，具体包括以下步骤步骤一：施工准备，对场地进行平整、使用全站仪对井位进行放样、并修建排污系统；步骤二：测放井位及挖探井；根据实际需求测放井位，根据降水井的放样位置，降水井中心位置距围护桩中心的距离为1.4m，距离基坑边缘2.0m；如果打围范围及其他条件限制，无法满足要求，降水井设置在围护桩之间或设置在基坑内；步骤三：埋设护口管，根据测量确定的桩位，准确稳固埋设护筒，在护筒顶部开设2个溢浆口，高出地面20cm；通过本方法可以有效解决，在地铁施工时，由于站点场地附近环境错综复杂，地下水系和附近建筑交错的环境下，施工效率不高、降水沉降效果不好的问题。
Novel dewatering method for deep foundation pit close to existing building
The invention discloses a novel dewatering method for a deep foundation pit close to an existing building. The novel dewatering method specifically includes the steps that step one, construction preparation is conducted, a site is leveled, a total station is used for lofting a well position, and a blowdown system is built; step two, a well position is measured and an exploratory well is dug, the well position is measured according to actual requirements, and according to the setting-out position of a dewatering well, the distance between the center position of the dewatering well and the center of a fender post is 1.4 m, and the distance between the center position of the dewatering well and the edge of the foundation pit is 2.0 m, if the surrounding range and other conditions are limited, the requirements cannot be met, the dewatering well is arranged between the fender posts or in the foundation pit; and step three, a protection opening pipe is buried, a protection barrel is accurately and stably buried according to a pile position determined through measurement, and two grout overflowing openings are formed in the top of the protection barrel and are 20 cm higher than the ground. According to the novel dewatering method for the deep foundation pit close to the existing building, the problems that in the subway construction process, due to the fact that an environment nearby a station site is complex, and an underground water system and nearby buildings are staggered, the construction efficiency is low, and the dewatering sedimentation effect is poor can be effectively solved.
本发明公开一种新型临近既有建筑物深基坑降水方法，具体包括以下步骤步骤一：施工准备，对场地进行平整、使用全站仪对井位进行放样、并修建排污系统；步骤二：测放井位及挖探井；根据实际需求测放井位，根据降水井的放样位置，降水井中心位置距围护桩中心的距离为1.4m，距离基坑边缘2.0m；如果打围范围及其他条件限制，无法满足要求，降水井设置在围护桩之间或设置在基坑内；步骤三：埋设护口管，根据测量确定的桩位，准确稳固埋设护筒，在护筒顶部开设2个溢浆口，高出地面20cm；通过本方法可以有效解决，在地铁施工时，由于站点场地附近环境错综复杂，地下水系和附近建筑交错的环境下，施工效率不高、降水沉降效果不好的问题。
Novel dewatering method for deep foundation pit close to existing building
一种新型临近既有建筑物深基坑降水方法
HUANG YULIN (author) / WANG CONG (author) / XIAN BING (author)
2021-08-13
Patent
Electronic Resource
Chinese
Dewatering method for deep foundation pit of existing building
| European Patent Office | 2021
Foundation pit supporting method close to existing building
| European Patent Office | 2024
Construction method of large-height-difference deep foundation pit close to existing building
| European Patent Office | 2024
| European Patent Office | 2024