CN202627011U

CN202627011U - Composite type soft foundation treatment pile group

Info

Publication number: CN202627011U
Application number: CN 201220307010
Authority: CN
Inventors: 黎爱清; 孔德荣; 李国英
Original assignee: Fifth Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Current assignee: Fifth Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Priority date: 2012-06-28
Filing date: 2012-06-28
Publication date: 2012-12-26
Anticipated expiration: 2022-06-28

Abstract

The utility model relates to a soft foundation treatment structure, in particular to a composite type soft foundation treatment pile group comprising CFG (Cement Flyash Gravel) piles, revolving bored piles and pipe piles, which are arranged on a foundation, wherein matrixes formed by the revolving bored piles and matrixes formed by the pipe piles are arranged at intervals, and the CFG piles are also arranged in a matrix shape and arranged in the matrixes formed by the revolving bored piles and the matrixes formed by the pipe piles; the upsides of the CFG piles, the revolving bored piles and the pipe piles are respectively connected with respective pile caps, and the pile caps of the CFG piles, the revolving bored piles and the pipe piles are connected through reinforcing steel bars; and geogrids are supported on the pile caps of the CFG piles, the revolving bored piles and the pipe piles, and mattress layers are supported on the geogrids. Compared with the prior art, the composite type soft foundation treatment pile group has the advantages that the CFG piles, the revolving bored piles and the pipe piles are staggered in the matrix shape, so that the stress characteristic of the foundation under different working conditions in different periods can be achieved, and meanwhile, the bearing capacity of the foundation is improved to the maximum extent; and the pile caps of the CFG piles, the revolving bored piles and the pipe piles are connected, and the load of the a roadbed is transferred through the mattress layers, so that the bearing capacity of the pile with a high-strength pile cap is effectively exerted, the stability of the foundation is improved, and the problem of non-uniform stress in soft foundation treatment is solved.

Description

A combined type treatment of soft foundation clump of piles

Technical field:

The utility model relates to a kind of treatment of soft foundation structure, a particularly a kind of combined type treatment of soft foundation clump of piles.

Background technology:

Along with expanding economy, progress of science and technology, infrastructure constructions such as the traffic of China, water conservancy, Fang Jian development is very rapidly; And China's coastal area is economically developed, many, the technical sophistication of engineering construction investment project, and the weak soil of coastal area marine sediment distributes extensively; But because the load of works is increasing, to ground require increasingly high, so increasing requirement of engineering is carried out artificial treatment to ground; For example: the house foundation of soft base band, Industrial Plant, port and pier, subway engineering, civil air defense constructions and installations or the like; Nearly all work items all can arrive situation such as treatment of soft foundation, jacking existing building in advance, and treatment of soft foundation mode in the past is single, and combination property is low; Fund input is big, and the scope of application has limitation.

The utility model content:

It is wide that the utility model purpose of the utility model is to solve geological condition complicacy, skewness, scope, and the marine sediment mud that extensively distributes is soft more and moulds, flows and mould a shape and the dark combined type treatment of soft foundation clump of piles of the treatment of soft foundation degree of depth.

The technical scheme of the utility model is:

An a kind of combined type treatment of soft foundation clump of piles; Comprise the CFG stake that places on the ground, drilled pile and pile tube circle round; The matrix that matrix that the said drilled pile that circles round constitutes and said pile tube constitute is provided with at interval, and said CFG stake also is rectangular layout and places the matrix of the said drilled pile formation of circling round and the matrix that pile tube constitutes; Above-mentioned three's top connects pile cover separately respectively, and three's pile cover connects through reinforcing bar; Three's pile cover upper support GSZ, this GSZ upper support mattress layer.

The utility model compared with prior art; CFG stake, circle round drilled pile and pile tube place on the ground respectively; The three is matrix and interleaved is arranged, can solve the ground mechanical characteristic under different times, the different operating mode, has improved bearing capacity of foundation soil simultaneously to greatest extent; Three's pile cover connects, and transmits embankment load through mattress layer, can effectively bring into play the supporting capacity of pile cover high strength stake, improves the stability of ground, solves the difficult problem of treatment of soft foundation discontinuity.

The preferred version of the utility model is:

Said mattress layer is compiled geogrids layer, middle part medium coarse sand bed course, middle part hardcore bed, two-way footpath, upper strata volume GSZ, top medium coarse sand bed course and upper strata hardcore bed by bottom hardcore bed, bottom medium coarse sand bed course, the two-way footpath of lower floor from bottom to top and is constituted.

Said three's pile cover carries out horizontal stroke, the vertical connection through reinforcing bar.

Said CFG stake, circle round drilled pile and pile tube three's stake top connects pile cover separately through the mode of building respectively.

Description of drawings:

Fig. 1 is the CFG stake, drilled pile and pile tube three arrangement sketch map circle round.

Fig. 2 is a pile cover syndeton sketch map.

Fig. 3 is the A portion enlarged drawing among Fig. 2.

The specific embodiment:

Below in conjunction with embodiment the utility model is detailed:

An a kind of combined type treatment of soft foundation clump of piles; Referring to accompanying drawing 1 to accompanying drawing 3, among the figure: GSZ 8, middle level medium coarse sand bed course 9, middle level hardcore bed 10, two-way footpath, upper strata volume GSZ 11, upper strata medium coarse sand bed course 12, upper strata hardcore bed 13, reinforcing bar 14, pile cover 15 are compiled in CFG stake 1, the drilled pile 2 that circles round, pile tube 3, mattress layer 4, GSZ 5, bottom hardcore bed 6, bottom medium coarse sand bed course 7, the two-way footpath of lower floor.

In the present embodiment; CFG stake 1, circle round drilled pile 2 and pile tube 3 are placed on the ground; Wherein: circle round drilled pile 2 and pile tube 3 respectively and do not become matrix arrangements; The matrix that matrix that the drilled pile 2 that circles round constitutes and pile tube 3 constitute is provided with at interval, and CFG stake 1 also is rectangular layout, and places the matrix of drilled pile 2 formations of circling round and the matrix that pile tube 3 constitutes.

Above-mentioned CFG stake 1, circle round drilled pile 2 and pile tube 3 threes' top is connected pile cover 15 separately respectively, treat that pile foundation construction is accomplished after, three's pile cover 15 is through reinforcing bar 14 horizontal strokes, the vertical connection; Three's pile cover 15 upper support GSZs 5, GSZ 5 upper support mattress layers 4.

The middle level medium coarse sand bed course 9 that mattress layer 3 is compiled geogrids layer 8,5 cm thickness by the two-way footpath of thick bottom hardcore bed 6,5 cm of 15cm thick bottom medium coarse sand bed course 7, lower floor from bottom to top is that the upper strata medium coarse sand bed course 12 of compiling GSZ 11,5 cm thickness with the two-way footpath in middle level hardcore bed 10, the upper strata of 15 cm thickness is to constitute with the thick upper strata hardcore bed 13 of 15cm; Mattress layer 3 transmits the embankment load, can effectively bring into play the supporting capacity of pile cover ability high strength stake, improves the stability of ground.

CFG stake 1, circle round drilled pile 2 and pile tube 3 threes' stake top connects pile cover 12 separately through the mode of building respectively.

CFG stake 1 has that suitable stratum is wide, and speed of application is fast, and the cycle is short, the characteristics that economic benefit is high; The drilled pile 2 that circles round is applicable to various geological conditionss, and it is effective to have a retaining wall, and hole quality is reliable, and expense is lower, convenience operation; Pile for prestressed pipe 3 has that suitable stratum is wide, and speed of application is fast, and the cycle is short, the advantage that economic benefit is high; CFG stake and circle round drilled pile 2 and pile tube 3 intersect use, can well play the effect of reinforcing flexible foundation.

Claims

1. combined type treatment of soft foundation clump of piles; Comprise the CFG stake that places on the ground, drilled pile and pile tube circle round; It is characterized in that: the matrix that matrix that the said drilled pile that circles round constitutes and said pile tube constitute is provided with at interval, and said CFG stake also is rectangular layout and places the matrix of the said drilled pile formation of circling round and the matrix that pile tube constitutes; Above-mentioned three's top connects pile cover separately respectively, and three's pile cover connects through reinforcing bar; Three's pile cover upper support GSZ, this GSZ upper support mattress layer.

2. a compound treatment of soft foundation clump of piles according to claim 1 is characterized in that: said mattress layer is compiled geogrids layer, middle part medium coarse sand bed course, middle part hardcore bed, two-way footpath, upper strata volume GSZ, top medium coarse sand bed course and upper strata hardcore bed by bottom hardcore bed, bottom medium coarse sand bed course, the two-way footpath of lower floor from bottom to top and is constituted.

3. a combined type treatment of soft foundation clump of piles according to claim 1 is characterized in that: said three's pile cover carries out horizontal stroke, the vertical connection through reinforcing bar.

4. a combined type treatment of soft foundation clump of piles according to claim 1 is characterized in that: said CFG stake, circle round drilled pile and pile tube three's stake top connects pile cover separately through the mode of building respectively.