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Bedding and unsymmetrical pressure soft rock tunnel portal reinforcing structure of oblique crossing structure and construction method of bedding and unsymmetrical pressure soft rock tunnel portal reinforcing structure
The invention relates to the technical field of tunnel portal reinforcement, in particular to a bedding and unsymmetrical pressure soft rock tunnel portal reinforcement structure of an oblique crossing structure and a construction method. The tunnel structure comprises a tunnel body arranged in a bedding slope, a frame beam is arranged on the high-terrain side of the tunnel body, and a pile foundation is arranged on the low-terrain side of the tunnel body; the frame beam is arranged on the surface layer of the bedding slope, and the bedding slope is connected with the frame beam through a pre-stressed anchor cable. The method has the advantages that the pre-stressed anchor cables, the frame beams, the pile foundations, the pile foundation crown beams and the retaining walls are adopted, so that the problem of reinforcement before the unsymmetrical pressure tunnel enters the hole, the problem that the tunnel is located on a bedding side slope and prone to landslide and the problem of semi-open and semi-hidden bevel angle tunnel top backfilling are solved at the same time; according to the reinforcing structure, the bias slope is weakened so as to reduce the gliding force, the influence of side slope bias and bedding geology on the tunnel stability is reduced, the construction method is simple and rapid, the slope reinforcing quality is good, and compared with a traditional construction method, much time and cost are saved.
本发明涉及隧道洞口加固技术领域，尤其涉及一种斜交构造的顺层、偏压软岩隧道洞口加固结构及施工方法；其包括置于顺层斜坡内的隧道本体，所述隧道本体地势较高的一侧设置有框架梁、地势较低的一侧设置有桩基；所述框架梁设置在所述顺层斜坡表层，所述顺层斜坡与所述框架梁通过预应力锚索连接，本发明优点在于采用预应力锚索、框架梁、桩基、桩基冠梁以及挡墙同时解决了偏压隧道进洞前的加固问题、隧道位于顺层边坡易发生滑坡的问题和半明半暗斜角隧道洞顶回填的问题；该加固结构消弱偏压边坡以减轻下滑力，降低边坡偏压和顺层地质对隧道稳定性的影响，本施工方法简单、快速，对坡体加固质量好，相比传统的施工方法节省了不少的时间和成本。
Bedding and unsymmetrical pressure soft rock tunnel portal reinforcing structure of oblique crossing structure and construction method of bedding and unsymmetrical pressure soft rock tunnel portal reinforcing structure
The invention relates to the technical field of tunnel portal reinforcement, in particular to a bedding and unsymmetrical pressure soft rock tunnel portal reinforcement structure of an oblique crossing structure and a construction method. The tunnel structure comprises a tunnel body arranged in a bedding slope, a frame beam is arranged on the high-terrain side of the tunnel body, and a pile foundation is arranged on the low-terrain side of the tunnel body; the frame beam is arranged on the surface layer of the bedding slope, and the bedding slope is connected with the frame beam through a pre-stressed anchor cable. The method has the advantages that the pre-stressed anchor cables, the frame beams, the pile foundations, the pile foundation crown beams and the retaining walls are adopted, so that the problem of reinforcement before the unsymmetrical pressure tunnel enters the hole, the problem that the tunnel is located on a bedding side slope and prone to landslide and the problem of semi-open and semi-hidden bevel angle tunnel top backfilling are solved at the same time; according to the reinforcing structure, the bias slope is weakened so as to reduce the gliding force, the influence of side slope bias and bedding geology on the tunnel stability is reduced, the construction method is simple and rapid, the slope reinforcing quality is good, and compared with a traditional construction method, much time and cost are saved.
本发明涉及隧道洞口加固技术领域，尤其涉及一种斜交构造的顺层、偏压软岩隧道洞口加固结构及施工方法；其包括置于顺层斜坡内的隧道本体，所述隧道本体地势较高的一侧设置有框架梁、地势较低的一侧设置有桩基；所述框架梁设置在所述顺层斜坡表层，所述顺层斜坡与所述框架梁通过预应力锚索连接，本发明优点在于采用预应力锚索、框架梁、桩基、桩基冠梁以及挡墙同时解决了偏压隧道进洞前的加固问题、隧道位于顺层边坡易发生滑坡的问题和半明半暗斜角隧道洞顶回填的问题；该加固结构消弱偏压边坡以减轻下滑力，降低边坡偏压和顺层地质对隧道稳定性的影响，本施工方法简单、快速，对坡体加固质量好，相比传统的施工方法节省了不少的时间和成本。
Bedding and unsymmetrical pressure soft rock tunnel portal reinforcing structure of oblique crossing structure and construction method of bedding and unsymmetrical pressure soft rock tunnel portal reinforcing structure
一种斜交构造的顺层、偏压软岩隧道洞口加固结构及施工方法
GONG JIEMEI (author) / XIE DESONG (author) / QIU JILUO (author) / ZHOU YIFAN (author) / ZHANG WENWEN (author)
2023-04-18
Patent
Electronic Resource
Chinese
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