CN102191778A

CN102191778A - Construction method of immersed-tube compress soil-free underground continuous wall

Info

Publication number: CN102191778A
Application number: CN2011100945534A
Authority: CN
Inventors: 傅健
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-15
Filing date: 2011-04-15
Publication date: 2011-09-21
Also published as: CN102605764A

Abstract

The invention relates to a construction method of an immersed-tube compress soil-free underground continuous wall, belonging to the field of construction methods of foundation treatment and foundation engineering. The construction method comprises the following steps of: firstly assembling soil dumping tubes at both sides of steel moulds; lifting the steel moulds, and sequentially and parallelly pressing a group of four steel moulds; placing steel reinforcement cages into the steel moulds; pouring concrete into the first steel mould, and pulling out the first steel mould in a vibrating way; after the first steel mould is pulled out, forming a first pile, and simultaneously pressing the fifth steel mould; repeating like that to form a second pile, a third pile and more piles so as to complete the construction of the segmental underground continuous wall. The construction method has the advantages of more reasonable stress and more efficient material utilization; and in addition, the invention has the characteristics of little field pollution and clean and neat environment because non-drilling pore-forming is adopted.

Description

Submersed type does not have soil compaction construction of continuous concrete wall method

Technical field

The invention belongs to the job practices of ground processing and Foundation Design, referring in particular to Submersed type does not have soil compaction construction of continuous concrete wall method.

Background technology

The job practices of tradition diaphragm wall is: by (dashing) groove equipment that digs of special use, along the periphery of underground structure, press preposition, excavate out or groove that drill goes out to have the certain width and the degree of depth, use mud off, and in groove, the reinforcing cage with certain rigidity is set; Then, use the catheter irrigation underwater concrete, build up a unit groove, carry out so piecemeal, the specific process joint is used in section construction, makes it to form underground continuous reinforced concrete wall.The shortcoming of this job practices is that engineering quantity is big, and is long in time limit, not environmental protection, and concrete quality lacks guarantee.

Summary of the invention

The present invention is just in order to overcome above-mentioned deficiency, the Submersed type that a kind of work efficiency height, short construction period is provided and ensures the quality of products does not have soil compaction construction of continuous concrete wall method, concrete enforcement like this: Submersed type does not have soil compaction construction of continuous concrete wall method, it is characterized in that construction sequence is as follows:

1) loads onto the casting pipe in the punching block both sides;

2) the lifting punching block is pressed into one group of four punching block successively side by side;

3) in punching block, place reinforcing cage;

4) concrete perfusion in first punching block is vibrating and is extracting first punching block;

5) pull out first punching block after, form first the stake, be pressed into the 5th punching block simultaneously;

6) repeat the 4-5 step, form second and third ... pile is finished the construction of continuous concrete wall of the section of one-tenth.

It is basic identical with traditional diaphragm wall on force mechanism that Submersed type does not have soil compaction construction of continuous concrete wall method, owing to changed the construction technology of traditional diaphragm wall, makes its more reasonable stress, more efficient on the material use.Simultaneously, owing to adopt non-drilling well pore-forming, the on-the-spot pollution lacked, and environment is clean, clean and tidy.

Description of drawings

Fig. 1 is a work progress schematic diagram of the present invention.

The specific embodiment

Submersed type does not have soil compaction construction of continuous concrete wall method, and construction sequence is as follows:

1) loads onto the casting pipe in the punching block both sides;

3) in punching block, place reinforcing cage;

In this job practices, the concrete employing is done and is irritated rather than general underwater grouting, and concrete slump is bigger, adds concrete and adopts the vibration type perfusion, and concrete intensity is smash reliable in quality with stirring.

The diaphragm wall of making is a solid wall, bending resistance, shear-carrying capacity height, and the rigidity of structure is big, distortion is little, can reduce the sedimentation of foundation ditch surrounding ground, reduces the surrounding buildings thing is caused dysgenic risk; Need not in the construction to support, the convenient shoveling accelerated the shoveling process of pattern foundation pit supporting structure, shortened the duration; Reduced work such as soil excavation, outward transport, backfill, working procedure is few, and whole construction does not have mud and produces, on-the-spot clean civilization, and quality inspection, field control are comparatively easy.

This job practices is applied widely, also can be used for hydraulic engineering construction.

Claims

1. Submersed type does not have soil compaction construction of continuous concrete wall method, it is characterized in that construction sequence is as follows:

1) loads onto the casting pipe in the punching block both sides;

3) in punching block, place reinforcing cage;