Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction technology of double-row pile and jet grouting pile combined retaining structure
The invention discloses a construction process of a double-row pile and jet grouting pile combined supporting and retaining structure, the following supporting and retaining structure is adopted in the process and comprises double-row piles, a reinforced jet grouting pile set, a pile front jet grouting pile set, a top beam and a connecting beam, and the construction process of the supporting and retaining structure comprises the following steps that S1, the double-row piles are positioned; s2, double-row pile hole forming and pile body reinforcement cage construction; s3, double-row pile concrete pouring is conducted; s4, construction of a reinforced jet grouting pile group is carried out; s5, top beam and coupling beam steel bars are bound, and concrete is integrally cast; s6, the foundation pit is excavated to the first-level excavation bottom elevation of the foundation pit in a segmented mode; s7, construction of a pre-pile jet grouting pile group is carried out; and S8, after the front-pile jet grouting pile set reaches the design strength, excavation is conducted till the bottom elevation of the foundation pit is reached. By additionally arranging the reinforced jet grouting pile group and the pile-front jet grouting pile group, the mechanical parameters and strength of soil between piles and before and after the piles of the foundation pit supporting and retaining structure are improved, the purposes of controlling pile top deformation and improving the built-in effect of a passive area in front of the piles are achieved, and the stability of the foundation pit is improved.
本专利申请公开了一种双排桩及旋喷桩联合支挡结构的施工工艺，该工艺采用如下支挡结构，包括双排桩、加筋旋喷桩组、桩前旋喷桩组、冠梁和连梁，上述支挡结构的施工工艺包括以下步骤：S1、对双排桩进行定位；S2、双排桩成孔及桩体钢筋笼施工；S3、双排桩混凝土浇筑；S4、进行加筋旋喷桩组施工；S5、冠梁、连梁钢筋绑扎及混凝土整体浇铸；S6、基坑分段开挖至基坑一级开挖底标高；S7、进行桩前旋喷桩组施工；S8、待桩前旋喷桩组达到设计强度后，挖至基坑底标高。本发明通过增设加筋旋喷桩组和桩前旋喷桩组，提高了基坑支挡结构桩间及前后土的力学参数及强度，达到控制桩顶变形及提高桩前被动区嵌固作用的目的，提高了基坑的稳定性。
Construction technology of double-row pile and jet grouting pile combined retaining structure
The invention discloses a construction process of a double-row pile and jet grouting pile combined supporting and retaining structure, the following supporting and retaining structure is adopted in the process and comprises double-row piles, a reinforced jet grouting pile set, a pile front jet grouting pile set, a top beam and a connecting beam, and the construction process of the supporting and retaining structure comprises the following steps that S1, the double-row piles are positioned; s2, double-row pile hole forming and pile body reinforcement cage construction; s3, double-row pile concrete pouring is conducted; s4, construction of a reinforced jet grouting pile group is carried out; s5, top beam and coupling beam steel bars are bound, and concrete is integrally cast; s6, the foundation pit is excavated to the first-level excavation bottom elevation of the foundation pit in a segmented mode; s7, construction of a pre-pile jet grouting pile group is carried out; and S8, after the front-pile jet grouting pile set reaches the design strength, excavation is conducted till the bottom elevation of the foundation pit is reached. By additionally arranging the reinforced jet grouting pile group and the pile-front jet grouting pile group, the mechanical parameters and strength of soil between piles and before and after the piles of the foundation pit supporting and retaining structure are improved, the purposes of controlling pile top deformation and improving the built-in effect of a passive area in front of the piles are achieved, and the stability of the foundation pit is improved.
本专利申请公开了一种双排桩及旋喷桩联合支挡结构的施工工艺，该工艺采用如下支挡结构，包括双排桩、加筋旋喷桩组、桩前旋喷桩组、冠梁和连梁，上述支挡结构的施工工艺包括以下步骤：S1、对双排桩进行定位；S2、双排桩成孔及桩体钢筋笼施工；S3、双排桩混凝土浇筑；S4、进行加筋旋喷桩组施工；S5、冠梁、连梁钢筋绑扎及混凝土整体浇铸；S6、基坑分段开挖至基坑一级开挖底标高；S7、进行桩前旋喷桩组施工；S8、待桩前旋喷桩组达到设计强度后，挖至基坑底标高。本发明通过增设加筋旋喷桩组和桩前旋喷桩组，提高了基坑支挡结构桩间及前后土的力学参数及强度，达到控制桩顶变形及提高桩前被动区嵌固作用的目的，提高了基坑的稳定性。
Construction technology of double-row pile and jet grouting pile combined retaining structure
一种双排桩及旋喷桩联合支挡结构的施工工艺
YANG FURONG (Autor:in) / DENG WENJIE (Autor:in) / HE PING (Autor:in) / ZHOU YUTAO (Autor:in) / XIE YINGKUN (Autor:in) / YANG XIANG (Autor:in) / WU DEFENG (Autor:in) / HUANG YONG (Autor:in) / FU ZHONGLIN (Autor:in) / SONG ZENGBAO (Autor:in)
06.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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