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A Design Method for Reinforced Structure of Pile-Slab Wall on Soil Foundation Road Shoulder

A technology for strengthening structures and design methods, which is applied in the direction of foundation structure engineering, sheet pile walls, roads, etc., can solve the problems of large investment, high safety risks, and difficult construction of reinforced pile projects, and achieve simple construction, good economy, and high construction efficiency. Simple and Safe Effects

Active Publication Date: 2021-08-03
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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  • A Design Method for Reinforced Structure of Pile-Slab Wall on Soil Foundation Road Shoulder
  • A Design Method for Reinforced Structure of Pile-Slab Wall on Soil Foundation Road Shoulder
  • A Design Method for Reinforced Structure of Pile-Slab Wall on Soil Foundation Road Shoulder

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Embodiment 1

[0053] Such as 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 oth...

Embodiment 2

[0089] Such as 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 18kPa, internal friction angle 20°), filling height 10m (group A, B filler, The bulk density is 20kN / m, and the comprehensive internal friction angle is 35°).

[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...

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Abstract

The invention discloses a method for designing a reinforced structure of pile-slab walls on soil foundation road shoulders. The designed reinforcement structure includes reinforcements, embankment engineering and pile-slab wall structures; the pile-slab wall structure includes at least two reinforcement piles, at least two reinforcement piles Longitudinal intervals are arranged in the foundation along the line, the reinforcement is embedded in the foundation on one side of the reinforcement pile, and the embankment is filled in layers on the foundation on the other side of the reinforcement pile. Install reinforcements in front of the reinforcement piles to increase the horizontal resistance of the foundation soil in front of the reinforcement piles, which can effectively control the horizontal deformation of the reinforcement piles and reduce the setting depth of the reinforcement piles. The construction is simple, safe and economical. Determine the setting of the composite pile foundation The plane position and depth range of the composite pile foundation can effectively improve the utilization efficiency of the composite pile foundation. The depth of the composite pile foundation is the depth of the deformation affected area before the reinforcement of the composite pile foundation, which can ensure that the anti-deformation ability of the reinforced pile has sufficient safety reserve, and has the advantages of The construction is simple, safe and economical.

Description

technical field [0001] The invention relates to the field of pile-slab wall engineering, in particular to a design method for a reinforced structure of pile-slab walls on soil foundation road shoulders. 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 defo...

Claims

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Application Information

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Patent Type & Authority Patents(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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