Crack geology mortar leakage prevention drill-pouring pilework
The utility model relates to filling pile structure, in particular to one kind can promote cast-in-place pile concrete pouring quality, change
The crack geotechnical boring filling pile structure of kind foundation pile load-carrying properties, belongs to geotechnical engineering field, is suitable for gap region bored concrete pile
Bored concrete pile has obtained relatively broad answer as a kind of foundation pile form in science of bridge building and architectural engineering
With.When being irrigated pile driving construction under the geological conditions of crack, often need to set downwards sleeve from ground, but when the crack depth of burying compared with
When big, site operation cost and difficulty will increase dramatically.Simultaneously as there is a large amount of rubble more in crack geology, it is generally existing
The problems such as mechanical excavation difficulty is big, concrete spillage, seriously affects site operation efficiency.It is existing from the point of view of the stress performance of pile body
There is the stress performance of the bored concrete pile of gap region to be influenced by gap region more significant.
In consideration of it, being made to promote the construction quality of crack geotechnical boring bored concrete pile, raising site operation efficiency, reducing engineering
Valence, urgently utility model one kind can synchronize and realize that gap region hole slag quickly removes, cast-in-place pile concrete pouring quality mentions at present
The crack geotechnical boring cast-in-place pile construction method for the targets such as liter, foundation pile load-carrying properties improve, project cost reduces.
Utility model content
The purpose of the utility model is to overcome deficiency in the prior art, providing a kind of can not only promote bored concrete pile coagulation
Native pouring quality, the crack geology mortar leakage prevention drill-pouring pilework that foundation pile load-carrying properties can also be improved, reduce project cost.
This crack geology mortar leakage prevention drill-pouring pilework, including filling pile cage of reinforcement, mortar leakage prevention pouch, pouch slip casting
Body and crack reinforcing body；Mortar leakage prevention pouch is set on the outside of the filling pile cage of reinforcement of gap region, and in the outer of mortar leakage prevention pouch
Side sets gradually steel fibre grid and auxiliary Grouting Pipe, and pouch Grouting Pipe is inserted into inside mortar leakage prevention pouch；Mortar leakage prevention pouch with
Filling pile cage of reinforcement is by laterally fastening reinforcing bar connection；Mortar leakage prevention pouch squeezes wealthy and forms pouch note by pouch Grouting Pipe slip casting
Slurry；Mortar leakage prevention pouch forms crack reinforcing body by slip casting on the outside of auxiliary Grouting Pipe.
As preferred: the mortar leakage prevention pouch uses geotextile material, and grouting amount is according to mortar leakage prevention capsule in mortar leakage prevention pouch
The volume of bag cavity predefines.
As preferred: using auxiliary Grouting Pipe to when slip casting, grouting pressure is outer lateral earth pressure on the outside of mortar leakage prevention pouch
As preferred: the gap region is located between crack lower part rock stratum and crack top rock stratum.
The beneficial effects of the utility model are:
(1) mortar leakage prevention pouch is arranged in flaw sites in the utility model, and concrete can be effectively prevent to leak to gap region,
Improve the utilization rate of material.
(2) crack reinforcing body is arranged in the utility model on the outside of pouch, can improve the load-carrying properties of foundation pile.
Detailed description of the invention
Fig. 1 is sectional schematic diagram after the completion of the utility model filling pile construction.
Description of symbols: 1- gap region；The crack 2- lower part rock stratum；The crack 3- top rock stratum；4- filling pile cage of reinforcement；
5- mortar leakage prevention pouch；6- steel fibre grid；7- assists Grouting Pipe；8- pouch Grouting Pipe；9- laterally fastens reinforcing bar；10- pouch note
Slurry；The crack 11- reinforcing body.
The utility model is described further below with reference to embodiment.The explanation of following embodiments is only intended to help to manage
Solve the utility model.It should be pointed out that for those skilled in the art, not departing from the utility model principle
Under the premise of, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model
In scope of protection of the claims.
Mix Design and pouring construction technical requirements, mortar leakage prevention pouch design and construction technical requirements, reinforcing bar
Cage construction technical requirement etc., repeats no more in present embodiment, and emphasis illustrates that the utility model relates to the embodiments of method.
Shown in referring to Fig.1, the crack geology mortar leakage prevention drill-pouring pilework, in the bored concrete pile steel of gap region 1
Mortar leakage prevention pouch 5 is set on the outside of muscle cage 4, and is orderly arranged outside each steel fibre grid 6 and auxiliary Grouting Pipe in mortar leakage prevention pouch 5
7, pouch Grouting Pipe 6 is inserted into inside mortar leakage prevention pouch 5；By mortar leakage prevention pouch 5 and filling pile cage of reinforcement 4 by laterally fastening steel
Muscle 9 connects；By pouch Grouting Pipe 8, into mortar leakage prevention pouch 5, wealthy mortar leakage prevention pouch 5 is squeezed in slip casting, and forms pouch injecting cement paste 10；
The position of filling pile cage of reinforcement 4 is checked, then is irrigated pile concreting；Pass through auxiliary slip casting before cast-in-place pile concrete final set
Pipe 7 forms crack reinforcing body 11 to the 5 outside slip casting of mortar leakage prevention pouch.
1 height of gap region is 3m, and gapfiller is clay, and rock is sand gravel.
Crack lower part rock stratum 2 is weak weathering glutenite.
Crack top rock stratum 3 is the glutenite of severely-weathered~completely decomposed.
Steel reinforcement cage 4 is diameter 1000mm, indulges muscle and uses HRB335, stirrup uses HPB300.
In the outside of steel reinforcement cage 4 setting mortar leakage prevention pouch 5, steel fibre grid 6, auxiliary Grouting Pipe 7；In mortar leakage prevention pouch 5
Inside insertion pouch Grouting Pipe 8；Mortar leakage prevention pouch 5 is connect with filling pile cage of reinforcement 4 by laterally fastening reinforcing bar 9.
Mortar leakage prevention pouch 5 uses geomembrane, and height 4m is set on the outside of steel reinforcement cage.
Steel fibre grid 6 is set on the outside of steel reinforcement cage, using steel plastic geogrid.
Auxiliary Grouting Pipe 7 and pouch Grouting Pipe 8 are all made of the steel pipe that diameter is 30mm, steel strength Q235B.Utilize capsule
The bag cement injection slurries into mortar leakage prevention pouch 5 of Grouting Pipe 8, form pouch injecting cement paste 10.
Laterally fastening reinforcing bar 9 uses the HPB300 grade reinforcing bar of diameter 10mm.
Crack reinforcing body 11 uses the concrete of C35.