Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of prestressed structure on branch section of urban underpass
The invention discloses a construction method of a prestressed structure on a branch section of an urban underpass, which specifically comprises the following steps of: S1, excavating a foundation pit under the condition of row pile support, arranging a sand cushion layer after the foundation pit is excavated to the designed bottom elevation, and arranging a C20 plain concrete cushion layer on the sand cushion layer; s2, a prestressed reinforced concrete tunnel bottom plate is constructed; s3, constructing a reinforced concrete side wall and a prestressed reinforced concrete tunnel top plate; s4, prestressed steel strand construction and tensioning; s5, tunnel waterproof construction and foundation pit backfilling are conducted; according to the method, the thicknesses of the top plate and the bottom plate of the underpass channel structure can be controlled to be 1.2 m, so that the burial depth of an underpass road is reduced, the longitudinal slope of the road is slowed down, the excavation depth of a foundation pit is reduced, the construction difficulty and the foundation pit excavation risk are reduced, and the construction efficiency is improved. Safety and stability of the structure can be guaranteed, construction difficulty and risks are reduced, and management and maintenance in the tunnel operation stage are facilitated.
本发明公开了一种预应力结构在城市下穿通道分岔段的施工方法，具体包括以下步骤：S1、在排桩支护条件下进行基坑开挖，基坑开挖至设计底标高后，设置砂碎垫层，并在砂碎垫层上设置C20素混凝土垫层；S2、预应力钢筋混凝土隧道底板施工；S3、钢筋混凝土侧墙及预应力钢筋混凝土隧道顶板施工；S4、预应力钢绞线施工及张拉；S5、隧道防水施工及基坑回填；该方法可将下穿通道结构顶板和底板的厚度控制在1.2m，从而减少了下穿道路的埋深，使道路纵坡减缓，且基坑开挖深度减少，有利于降低施工难度和基坑开挖风险，可以确保结构的安全稳定、降低施工难度与风险且有利于隧道运营阶段的管养和维护。
Construction method of prestressed structure on branch section of urban underpass
The invention discloses a construction method of a prestressed structure on a branch section of an urban underpass, which specifically comprises the following steps of: S1, excavating a foundation pit under the condition of row pile support, arranging a sand cushion layer after the foundation pit is excavated to the designed bottom elevation, and arranging a C20 plain concrete cushion layer on the sand cushion layer; s2, a prestressed reinforced concrete tunnel bottom plate is constructed; s3, constructing a reinforced concrete side wall and a prestressed reinforced concrete tunnel top plate; s4, prestressed steel strand construction and tensioning; s5, tunnel waterproof construction and foundation pit backfilling are conducted; according to the method, the thicknesses of the top plate and the bottom plate of the underpass channel structure can be controlled to be 1.2 m, so that the burial depth of an underpass road is reduced, the longitudinal slope of the road is slowed down, the excavation depth of a foundation pit is reduced, the construction difficulty and the foundation pit excavation risk are reduced, and the construction efficiency is improved. Safety and stability of the structure can be guaranteed, construction difficulty and risks are reduced, and management and maintenance in the tunnel operation stage are facilitated.
本发明公开了一种预应力结构在城市下穿通道分岔段的施工方法，具体包括以下步骤：S1、在排桩支护条件下进行基坑开挖，基坑开挖至设计底标高后，设置砂碎垫层，并在砂碎垫层上设置C20素混凝土垫层；S2、预应力钢筋混凝土隧道底板施工；S3、钢筋混凝土侧墙及预应力钢筋混凝土隧道顶板施工；S4、预应力钢绞线施工及张拉；S5、隧道防水施工及基坑回填；该方法可将下穿通道结构顶板和底板的厚度控制在1.2m，从而减少了下穿道路的埋深，使道路纵坡减缓，且基坑开挖深度减少，有利于降低施工难度和基坑开挖风险，可以确保结构的安全稳定、降低施工难度与风险且有利于隧道运营阶段的管养和维护。
Construction method of prestressed structure on branch section of urban underpass
一种预应力结构在城市下穿通道分岔段的施工方法
YE QIBIN (Autor:in) / ZHANG YILONG (Autor:in) / LI JIANWEI (Autor:in) / HUANG FUXIANG (Autor:in) / SHAO CHUNFENG (Autor:in) / ZHENG ZHIHONG (Autor:in) / LIN JIAN (Autor:in)
19.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Shallow prestressed girders for Fresno underpass
| Engineering Index Backfile | 1967
UNDERPASS MONITORING SYSTEM, UNDERPASS MONITORING DEVICE, AND UNDERPASS MONITORING METHOD
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