A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Support pile steel pipe supporting method beneficial to subway protection
The invention discloses a support pile steel pipe supporting method beneficial to subway protection, which comprises the following steps of: reserving a soil table: before steel support construction, reserving the soil table on the inner side of a support pile L2-J section foundation pit in order to prevent the displacement deformation of the foundation pit caused by the pressure of a soil body on the outer side of the foundation pit; concrete needs to be sprayed on the surface of the reserved soil table, the slope ratio of the soil table is 1: 1.5, 60 mm C20 concrete is sprayed, and slope excavation is conducted according to the following procedures that a, surveying and setting out are conducted, a working face is excavated, a side slope is trimmed, and a sprayed concrete thickness control mark is buried; b, C20 concrete is sprayed to the designed thickness; and c, slope toe water interception and drainage treatment and concrete spraying construction matters needing attention. Compared with a traditional anchor cable (rod) supporting structure system, disturbance of a soil body adjacent to the supporting piles is reduced, the safety risk of an underground building structure close to a subway area is eliminated, the influence on important buildings around a foundation pit is reduced, and the construction safety of the foundation pit is enhanced.
本发明公开了一种利于地铁保护的支护桩钢管支撑方法，包括如下步骤：预留土台：在钢支撑施工前，为防止支护桩因基坑外侧土体压力而引发基坑位移变形，需在支护桩L2～J段基坑内侧预留土台；预留土台喷射混凝土施工：预留土台表面须喷射混凝土，土台放坡坡比为1:1.5，喷射60mmC20混凝土，放坡开挖按以下工序进行施工：a、测量放线，开挖工作面，修整边坡，埋设喷射混凝土厚度控制标志；b、喷射C20混凝土至设计厚度；c、坡脚截排水处理，喷射混凝土施工注意事项。本技术内容与传统的锚索(杆)支撑结构体系相比，其减少与支护桩相邻土体的扰动，消除临近地铁区域地下构筑物结构安全风险，降低对基坑周边重要建筑的影响，增强了基坑施工安全性。
Support pile steel pipe supporting method beneficial to subway protection
The invention discloses a support pile steel pipe supporting method beneficial to subway protection, which comprises the following steps of: reserving a soil table: before steel support construction, reserving the soil table on the inner side of a support pile L2-J section foundation pit in order to prevent the displacement deformation of the foundation pit caused by the pressure of a soil body on the outer side of the foundation pit; concrete needs to be sprayed on the surface of the reserved soil table, the slope ratio of the soil table is 1: 1.5, 60 mm C20 concrete is sprayed, and slope excavation is conducted according to the following procedures that a, surveying and setting out are conducted, a working face is excavated, a side slope is trimmed, and a sprayed concrete thickness control mark is buried; b, C20 concrete is sprayed to the designed thickness; and c, slope toe water interception and drainage treatment and concrete spraying construction matters needing attention. Compared with a traditional anchor cable (rod) supporting structure system, disturbance of a soil body adjacent to the supporting piles is reduced, the safety risk of an underground building structure close to a subway area is eliminated, the influence on important buildings around a foundation pit is reduced, and the construction safety of the foundation pit is enhanced.
本发明公开了一种利于地铁保护的支护桩钢管支撑方法，包括如下步骤：预留土台：在钢支撑施工前，为防止支护桩因基坑外侧土体压力而引发基坑位移变形，需在支护桩L2～J段基坑内侧预留土台；预留土台喷射混凝土施工：预留土台表面须喷射混凝土，土台放坡坡比为1:1.5，喷射60mmC20混凝土，放坡开挖按以下工序进行施工：a、测量放线，开挖工作面，修整边坡，埋设喷射混凝土厚度控制标志；b、喷射C20混凝土至设计厚度；c、坡脚截排水处理，喷射混凝土施工注意事项。本技术内容与传统的锚索(杆)支撑结构体系相比，其减少与支护桩相邻土体的扰动，消除临近地铁区域地下构筑物结构安全风险，降低对基坑周边重要建筑的影响，增强了基坑施工安全性。
Support pile steel pipe supporting method beneficial to subway protection
一种利于地铁保护的支护桩钢管支撑方法
ZHENG HAISONG (author) / HU ZEHUI (author) / LI LANGBIN (author) / LI XUECONG (author) / LUO MING (author) / XIAO JIANGJIAN (author) / YAO RONGRONG (author) / DENG LIMING (author)
2023-10-13
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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