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Anchor-tube guniting support of frame and its construction method

A construction method and anchor pipe technology, which can be used in infrastructure engineering, excavation, sheet pile walls, etc., can solve problems affecting the safety of buildings, etc., and achieve the effects of preventing rain erosion damage, enhancing overall rigidity, and constraining displacement.

Inactive Publication Date: 2002-03-06
梁炯均
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the horizontal anchor rod is too long, it often exceeds the red line, which affects the safety of nearby buildings; it is not allowed to exceed the red line, and the application of anchor spray support in deep foundation pits is greatly restricted

Method used

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  • Anchor-tube guniting support of frame and its construction method
  • Anchor-tube guniting support of frame and its construction method
  • Anchor-tube guniting support of frame and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In conjunction with the accompanying drawings, a description is made of the framework anchor pipe injection support of the present invention:

[0034] Depend on figure 1 It can be seen that the injection support of the anchor pipe of the frame is structured as follows:

[0035] Within a certain width of the ground around the foundation pit, a plurality of rows of regularly distributed vertical anchor pipes 1 are arranged, the length of the vertical anchor pipes exceeds the depth of the foundation pit, and the rear end of the vertical anchor pipes is exposed to the ground to install a prefabricated frame 2;

[0036] With the excavation of the foundation pit, the horizontal anchor pipe 3 is driven into the pit wall, the length of the horizontal anchor pipe is limited to the outermost row of vertical anchor pipes passing through the pit edge, and the quincunx shape is evenly distributed between the vertical anchor pipe column spacing;

[0037] Near the junction of the bot...

Embodiment 2

[0041] The foundation pit on the soft ground is 8 meters deep, the length of the vertical anchor pipe is 11 meters, the diameter of the small diameter anchor pipe is 60 mm; the length of the horizontal anchor pipe is 4 meters, the distance is 80 cm, and the diameter of the small diameter anchor pipe is 48 mm. mm. The construction sequence of the injection support construction method of the frame anchor pipe is as follows:

[0042] (1) According to the design plan, on the ground around the foundation pit, carry out on-site setting-out positioning for the series of vertical anchor pipes, with a distance of 1 meter and a total of 4 rows;

[0043] (2) Pneumatic impact hammer or manual impact hammer can be used to drive into multiple rows of regularly distributed vertical anchor pipes;

[0044] (3) Install the prefabricated frame, the steel pipe rods of the prefabricated frame and the pipe end connection members are connected by bolts, and the ends of the vertical anchor pipes are...

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Abstract

An anchor-tube guniting support for structural frame is constructed through arranging multiple rows of regularly distributed vertical anchor tubes on the periphery of foundation pit, arranging assembled structural frame on the rear ends of said vertical anchor tubes which are exposed from ground, excavating foundation pit, inserting horizontal anchor tubes in pit wall, arranging the inclined anchor tubes at the join between pit bottom and pit walls, arranging vertical anchor tubes on pit bottom, and injecting grout in the ground around the anchor tube to form a continuous underground wall. Itis suitable for soft foundation and deep foundation pit.

Description

technical field [0001] The invention belongs to a building foundation pit support method, and is particularly suitable for soft ground or deep foundation pit support and construction where the length of a horizontal bolt is limited by the surrounding environment, red lines, and the like. Background technique [0002] At present, in the construction of building foundation pit support, anchoring and shotcrete support technology is often used, that is, during the excavation process of the foundation pit, a certain depth is excavated step by step, and horizontal (small inclination angle) anchor rods or anchor pipes are implanted on the side wall. Inject cement slurry into the anchor hole or the anchor pipe to consolidate the anchor and the soil. When the foundation pit is excavated to the design depth or in sections, steel mesh and shotcrete are hung on the wall to form a retaining wall. This construction method has the advantages of convenient construction, safety and reliabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/62E02D17/04
Inventor 梁炯均
Owner 梁炯均
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