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Fabricated roadbed construction system and technology suitable for deep soft foundation

A prefabricated and deep technology, applied in the direction of infrastructure engineering, roads, roads, etc., can solve the problems of large area, slow construction speed of subgrade on deep soft foundation, difficult to guarantee the quality of subgrade filling, etc., and achieve short construction period , Easy to assemble on site, light weight effect

Pending Publication Date: 2019-07-05
四川省交通勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a prefabricated roadbed construction system suitable for deep soft foundations, which solves the problems of slow construction speed of roadbeds on deep soft foundations caused by existing construction techniques, large floor space, and difficulty in ensuring the quality of roadbed filling. Improving the economy of foundation treatment on deep soft soil subgrade and saving land resources

Method used

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  • Fabricated roadbed construction system and technology suitable for deep soft foundation
  • Fabricated roadbed construction system and technology suitable for deep soft foundation
  • Fabricated roadbed construction system and technology suitable for deep soft foundation

Examples

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Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 2 to Figure 4As shown, a prefabricated subgrade construction system suitable for deep and thick soft foundations includes a ground line 5, a deep and thick soft base layer 6 below the ground line 5, a cushion 2 above the ground line 5, and the deep, thick soft base A number of prestressed pipe piles 1 are vertically inserted in the base layer 6, and an assembled support structure is detachably installed on the cushion layer 2, and the vertical direction of the assembled support structure is perpendicular to the cushion layer 2, specifically , the assembled retaining structure is a groove-shaped retaining wall 7, the groove-shaped retaining wall 7 includes a U-shaped groove 72, and the U-shaped groove 72 is detachably installed on the cushion layer 2, and the counterweight soil body 9 and the geotechnical foam blocks 10 are arranged between the two side walls of the U-shaped groove 72, and the bottom of the assembled retaining structure is laid with a cou...

Embodiment 2

[0044] Such as figure 2 As shown, this embodiment is based on Embodiment 1, the bottom of the U-shaped groove 72 is provided with a first insert 71, and the first insert 71 is embedded in the cushion layer 2; the two side walls of the U-shaped groove 72 The ends are connected by ribs 73 ; the ribs 73 are arranged in the middle of the U-shaped groove 72 in the vertical direction.

Embodiment 3

[0046] Such as image 3 , Figure 4 As shown, this embodiment is based on Embodiment 1, and the difference from Embodiment 1 is that the assembled retaining structure is a buttress-type structure, and the buttress-type structure includes two symmetrically arranged buttress-type retaining walls 8 , the buttress type retaining wall 8 includes a bottom plate 81, the upper end surface of the bottom plate 81 is vertically provided with a wall panel 82, and the upper end surface of the bottom plate 81 is symmetrically provided with two buttresses 83, and the buttresses 83 are A right-angled triangular plate, one right-angled side of the right-angled triangular plate is connected with the base plate 81, and the other right-angled side is connected with the wall panel 82, and the counterweight soil 9 and the geotechnical foam block 10 are filled between the two wall panels 82, And the buttress 83 is arranged on the outside of the counterweight soil 9 and the geotechnical foam block 1...

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Abstract

The invention discloses a fabricated roadbed construction system and technology suitable for a deep soft foundation. The fabricated roadbed construction system suitable for the deep soft foundation includes a ground line, wherein a deep soft foundation layer is below the ground line, an under layer is arranged above the ground line, a plurality of prestressing tube piles are vertically inserted into the deep soft foundation, a fabricated supporting structure is detachably mounted on the under layer, the vertical direction of the fabricated supporting structure is perpendicular to the under layer, a counterweight soil body is paved at the bottom of the fabricated supporting structure, the space above the counterweight soil body in the fabricated supporting structure is filled with an earthwork foamed plastic block body, and a road surface layer is paved on the earthwork foamed plastic block body in the fabricated supporting structure. According to the fabricated roadbed construction system and technology, the problems that the construction speed of a roadbed on the deep soft foundation is low due to an existing construction technology, the occupied area is large, and quality of roadbed filling is difficult to guarantee are solved, thus the economical efficiency of foundation treatment of the deep soft soil roadbed is improved, and land resources are saved.

Description

technical field [0001] The invention relates to the field of highway construction, in particular to an assembled roadbed construction system and technology suitable for deep and thick soft foundations. Background technique [0002] Prestressed pipe piles are a roadbed treatment process suitable for deep and soft ground areas. The prestressed pipe piles (1) are pressed to the depth required by the design through pile sinking methods such as static pressure, hammering, vibration and pre-drilling. The soft base (6) carries out subgrade filling on the formed composite foundation, that is, fills the traditional filler (3) on the cushion (2), the traditional filler (3) is soil or stone, and the cushion (2) The ground line (5) is formed at the bottom, the traditional filler (3) has a certain slope, and its top is the pavement layer (4), such as figure 1 As shown, the specific process is: prestressed pipe piles→cushion layer→subgrade layered filling→pavement layer, traffic safety a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E02D5/58E02D27/16
CPCE01C3/04E02D5/58E02D27/16
Inventor 袁松骆才镔邓霁伟王希宝李飞腾易秋阳
Owner 四川省交通勘察设计研究院有限公司
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