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Soil foundation road shoulder pile sheet wall reinforcing structure and design method

A technology for strengthening structures and design methods, which is applied in basic structure engineering, sheet pile walls, roads, etc., can solve the problems of difficult construction, high safety risks, and large investment in strengthening pile projects, and achieves simple construction, good economy, and construction. Simple and safe effect

Active Publication Date: 2020-09-08
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to effectively control the deformation of the reinforced piles, measures such as reducing the distance between the reinforced piles, increasing the length of the reinforced piles, and increasing the cross-sectional size of the reinforced piles can be used to effectively control the deformation of the reinforced piles in the soil foundation. However, these measures make the engineering of the reinforced piles The investment is large, and when the pile length of the reinforced pile is deep, the construction is difficult and the safety risk is great

Method used

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  • Soil foundation road shoulder pile sheet wall reinforcing structure and design method
  • Soil foundation road shoulder pile sheet wall reinforcing structure and design method
  • Soil foundation road shoulder pile sheet wall reinforcing structure and design method

Examples

Experimental program
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Effect test

Embodiment 1

[0053] like Figure 1-2 As shown, this embodiment provides a soil foundation road shoulder pile-slab wall reinforcement structure, including a pile-slab wall structure, a reinforcement 4 and an embankment project 3;

[0054] The pile-slab wall structure includes reinforcement piles 1 and soil retaining boards 2. The reinforcement piles 1 are arranged longitudinally along the line in the foundation at intervals. The tops of the reinforcement piles 1 protrude from the foundation. The quantity of soil plate 2 is at least two, and at least two soil retaining plates 2 are arranged on the foundation of reinforcement pile 1 side along vertical direction, and the two ends of soil retaining plate 2 are connected with adjacent described reinforcement pile 1 respectively, Specifically, the longitudinal spacing of the reinforcing piles 1 is generally 5-6m.

[0055] The number of reinforcements 4 is at least two, and at least two reinforcements 4 are buried in the foundation on the other ...

Embodiment 2

[0089] like Figure 1-2 As shown, the present embodiment specifically demonstrates the design method for the embankment project 3 in construction, and the specific design process:

[0090] Ballastless track high-speed railway embankment project 3 on a soil foundation, the foundation condition is hard plastic silty clay (bulk density 19kN / m, cohesion force 18kPa, internal friction angle 200), filling height 10m (group A, B filler, bulk density 20kN / m, comprehensive internal friction angle 350).

[0091] S1: Calculating the active earth pressure of the embankment filling soil behind the shoulder pile-slab wall;

[0092]

[0093] If the safety factor is 1.2, the design active earth pressure is 405kN / m

[0094] S2: Draft the pile length and pile section of the reinforced pile 1 in the pile-slab wall structure;

[0095] The cross-sectional size of the reinforcement pile 1 for the pile-sheet wall is proposed to be 2m (width)×3m (thickness), and the length of the reinforcement ...

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Abstract

The invention discloses a soil foundation road shoulder pile sheet wall reinforcing structure and a design method. The soil foundation road shoulder pile sheet wall reinforcing structure comprises reinforcing pieces, an embankment project and a pile sheet wall structure. The pile sheet wall structure comprises at least two reinforcing piles, the at least two reinforcing piles are arranged in a foundation at intervals in the longitudinal direction of a line, the reinforcing pieces are buried in the foundation on one sides of the reinforcing piles, and the foundation on the other sides of the reinforcing piles is filled with embankment project in a layered mode. The reinforcing pieces are arranged in front of the reinforcing piles, so that the foundation soil horizontal resistance in front of the reinforcing piles is increased; horizontal deformation of the reinforcing piles can be effectively controlled, and the setting depth of the reinforcing piles is reduced; the construction is simple and safe and the economy is good; the plane position and the depth range of a composite pile foundation are determined, the utilization efficiency of the composite pile foundation can be effectively improved, the setting depth of the composite pile foundation is the depth of a deformation influence area before the composite pile foundation is reinforced, it can be guaranteed that the deformation resistance of the reinforcing piles has enough safety reserves, and the method has the advantages of being simple in construction, safe and good in economical efficiency.

Description

technical field [0001] The invention relates to the field of pile-slab wall engineering, in particular to a pile-slab wall reinforcement structure and a design method for road shoulders on soil foundations. Background technique [0002] The shoulder pile-sheet wall has good embankment slope closing effect and good seismic performance, and is widely used in roadbed engineering. The "Code for Design of Railway Subgrade Supporting and Retaining Structures" imposes restrictions on the deformation of reinforced piles: the deformation control requirements of pile tops are not greater than 10cm (6cm for high-speed railways), and the deformation of anchor points is not greater than 1cm. [0003] In order to effectively control the deformation of the reinforced piles, measures such as reducing the distance between the reinforced piles, increasing the length of the reinforced piles, and increasing the cross-sectional size of the reinforced piles can be used to effectively control the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B2/00E02D5/03
CPCE01B2/00E02D5/03
Inventor 姚裕春王晓刚刘昕袁碧玉张良罗强钱昊李准陈雅婷
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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