Pushing frame bridge outlet end roadbed protection thrust structure and construction process thereof

A construction technique and frame bridge technology, which is applied in infrastructure engineering, roads, roads, etc., and can solve problems such as cracking of high-speed subgrades and pavements

Pending Publication Date: 2020-10-23
CHINA CONSTR FIFTH ENG DIV CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, the present invention proposes a roadbed protection thrust structure at the exit end of a jacking frame bridge and its construction technology. Technical Problems of Cracking of Expressway Subgrade and Pavement in Frame Bridge Engineering

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  • Pushing frame bridge outlet end roadbed protection thrust structure and construction process thereof
  • Pushing frame bridge outlet end roadbed protection thrust structure and construction process thereof
  • Pushing frame bridge outlet end roadbed protection thrust structure and construction process thereof

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Embodiment Construction

[0029] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0030] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground co...

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Abstract

The invention discloses a pushing frame bridge outlet end roadbed protection thrust structure and a construction process thereof. The construction process comprises the steps that a, grouting reinforcement is conducted on a road shoulder of a highway at the outlet end of a pushing frame bridge through small guide pipes; b, two sets of first protection piles are constructed in the vertical direction, and a set of second protection piles is constructed in the vertical direction; c, a top beam is arranged at the pile top of each group of first protection piles; d, a thrust beam is arranged, and the two ends of the thrust beam are connected with the top beams corresponding to the first protection piles respectively; e, connecting beams are poured at the pile tops of the second protection piles, transverse supports are poured between the thrust beam and the pile tops of the second protection piles, and the transverse supports are further connected with the connecting beams; and f, backfillconstruction is conducted at the outlet end of the pushing frame bridge, and compaction is conducted. According to the pushing frame bridge outlet end roadbed protection thrust structure and the construction process thereof, the technical problem that in the prior art, a highway roadbed pavement cracks in pushing frame bridge engineering is solved.

Description

technical field [0001] The invention belongs to the field of bridges, and in particular relates to a roadbed protection thrust structure at the exit end of a push frame bridge and a construction process thereof. Background technique [0002] Cracking, tearing, collapse, and lateral movement of road surfaces and subgrades have occurred in some domestic push frame bridge projects. When the frame channel leading support shield is about to push out of the exit side of the high-speed subgrade, the high-speed subgrade bears a huge jacking force, and the high-speed subgrade is also the weakest at this time. Analyzing the reason is mainly because the control on the exit side of the expressway roadbed is not in place, so that the road surface of the expressway roadbed is damaged. This place is also the top priority of the whole project. Reasonable, advanced and safe protective measures must be taken to ensure that the impact on subgrade cracking can be reduced when the jacking supp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00E02D5/22E02D17/18E02D3/12
CPCE01C3/00E02D3/12E02D5/22E02D17/18
Inventor 李伟东蒋正华邹德强彭海涛周向宇
Owner CHINA CONSTR FIFTH ENG DIV CORP LTD
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