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Light frame-subgrade pile-board structure in karst areas

A technology of pile-slab structure and karst areas, which is applied in the direction of infrastructure engineering, roads, buildings, etc., can solve the problems of difficult handling and detection of karst foundations, and achieve the goal of avoiding difficult handling and detection, simple construction technology, and broad application prospects Effect

Inactive Publication Date: 2012-11-21
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a light-weight frame subgrade pile-slab structure in karst areas to solve the settlement and stability problems of high-speed railway subgrades in karst areas, and to avoid difficult problems such as difficult handling and detection of karst foundations

Method used

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  • Light frame-subgrade pile-board structure in karst areas
  • Light frame-subgrade pile-board structure in karst areas

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] refer to figure 1 and figure 2 , the light frame subgrade pile-slab structure structure in karst area of ​​the present invention, it comprises: foundation pile 1, arranges in row along the horizontal interval of railway, longitudinal interval arranges in column; Rigid connection; platform cap 3, placed on top of foundation pile 1 or joist 2 and rigidly connected with it; transverse tie beam 4, set between foundation piles 1 in the same row and rigidly connected with it; longitudinal tie beam 5, set It is between and rigidly connected with foundation piles 1 in the same row. The present invention bears the vertical gravity generated by the subgrade filling soil 6, the train and the track structure through the foundation pile 1, and bears the horizontal load and temperature load of the train through the space frame system composed of the foundat...

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Abstract

A light frame-subgrade pile-board structure in karst areas aims to solve the problems of subsidence and poor stability of high-speed railway subgrades in the karst areas and overcome the defects of difficulty in treating and detecting karst groundwork. The light frame-subgrade pile-board structure comprises foundation piles (1), joists (2), a pile cap (3), transverse tie beams (4) and longitudinal tie beams (5), wherein the foundation piles (1) are arranged in rows at intervals transversely and in columns at intervals longitudinally; the joists (2) are transversely arranged at the tops of the foundation piles (1) and in rigid connection with the same; the pile cap (3) is arranged at the tops of the foundation piles (1) or the joists (2) and in rigid connection with the foundation piles (1) or the joists (2); the transverse tie beams (4) are arranged among the foundation piles (1) in the same rows and in rigid connection with the same; and the longitudinal tie beams (5) are arranged among the foundation piles (1) in the same columns and in rigid connection with the same.

Description

technical field [0001] The invention relates to a railway bridge structure, in particular to a light-weight frame subgrade pile-slab structure suitable for karst areas with strong karst development and empty karst caves. Background technique [0002] my country's karst landforms are widely distributed and large in area. Among them, Guangxi, Guizhou and eastern Yunnan occupy the largest area and are one of the largest karst areas in the world. A large number of high-speed railways in Southwest China have started construction. High-speed railways have put forward new requirements for high ride comfort, stability, and durability of the lines, and have strict restrictions on the total settlement of subgrade foundations, post-construction settlements, and differential settlements. Soil roadbeds in karst areas are prone to roadbed subsidence, karst collapse and other roadbed diseases during operation, which will seriously endanger driving safety. Composite foundation has limited...

Claims

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Application Information

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IPC IPC(8): E01B2/00E02D27/14
Inventor 姚裕春李安洪唐第甲庞应刚曾永红吴沛沛丁兆锋陈裕刚赵青海
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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