CN106065596B - A kind of oblique steel pipe combination soil cement forms the construction method of beaer - Google Patents
A kind of oblique steel pipe combination soil cement forms the construction method of beaer Download PDFInfo
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- CN106065596B CN106065596B CN201610533146.1A CN201610533146A CN106065596B CN 106065596 B CN106065596 B CN 106065596B CN 201610533146 A CN201610533146 A CN 201610533146A CN 106065596 B CN106065596 B CN 106065596B
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- Prior art keywords
- steel pipe
- soil cement
- enlarged body
- drilling
- oblique
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
Abstract
The invention discloses the construction methods that a kind of oblique steel pipe combination soil cement forms beaer, include the following steps:Starting drilling machine pierces soil body pore-forming for drilling rod is oblique, and after reaching designated depth, the drilling rod continues drilling and jet cement slurries to form one section of soil cement enlarged body;The drilling rod lift-off is drilled, a steel pipe is inserted into the soil cement enlarged body along the drilling later, several injected holes are distributed on the contact surface of the steel tube end part and the soil cement enlarged body;Supplement slip casting is carried out into the soil cement enlarged body through the injected hole on the steel pipe, the steel pipe is made to be integrally formed structure with the soil cement enlarged body.It is an advantage of the invention that; soil cement enlarged body of uniform size can be formed by the oblique drilling whitewashing of drilling rod; the steel pipe being inserted into afterwards, to be bonded with soil cement enlarged body composition, forms the integral structure of high-bearing capacity by supplementing in the angle bar guard member of reversed acanthoid and short muscle on slip casting and tube wall.
Description
Technical field
The invention belongs to construction engineering technical fields, and in particular to a kind of oblique steel pipe combination soil cement forms beaer
Construction method.
Background technique
The beaer that steel pipe combination soil cement is formed is widely used in building engineering field, and construction method is usually
Steel pipe is first inserted into soil body predetermined depth, then injects a certain amount of cement grout in steel pipe bottom, it is certain in steel pipe bottom
Range forms soil cement enlarged body, and then forms the steel pipe soil cement beaer with certain bearing capacity.
Sometimes oblique steel pipe soil cement beaer is used in engineering, but is constructed for oblique steel pipe using conventional method
When, after steel pipe at a certain angle oblique insertion soil body predetermined depth, the slurries of the bottom slip casting reason oblique because of steel pipe is carried out,
It tends not to be filled in its periphery around steel pipe, is hardly formed uniform soil cement enlarged body, so that the beaer formed is held
Power is carried to substantially reduce.
Summary of the invention
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of oblique steel pipe combination soil cement shapes
At the construction method of beaer, which applies one section of uniform soil cement first with the oblique drilling whitewashing of drilling rod and expands
Steel pipe is inserted among soil cement enlarged body, to form integral structure by body along drilling again later.
The object of the invention realization is completed by following technical scheme:
A kind of oblique steel pipe combination soil cement forms the construction method of beaer, it is characterised in that the construction method includes
Following steps:Starting drilling machine pierces soil body pore-forming for drilling rod is oblique, and after reaching designated depth, the drilling rod continues to creep into and spray
Jetting slurry liquid is to form one section of soil cement enlarged body;The drilling rod lift-off is drilled, later by a steel pipe along the drilling
It is inserted into the soil cement enlarged body, several notes is distributed on the contact surface of the steel tube end part and the soil cement enlarged body
Starch hole;Supplement slip casting is carried out into the soil cement enlarged body through the injected hole on the steel pipe, makes the steel pipe and the water
Soil enlarged body is integrally formed structure.
The drilling machine is one of mixing pile drilling machine or rotary churning pile drilling machine.
The outer diameter of steel pipes is greater than the drilling internal diameter.
The angle bar guard member in reversed acanthoid is provided on the outside of the injected hole on the steel pipe.
Several short muscle of inclination are welded on the steel pipe and the contact surface of the soil cement enlarged body.
The steel tube end part is provided with closed end, connects between the two through cuff banding, is distributed on the closed end
There are several injected holes, is provided with angle bar guard member on the outside of the injected hole.
The closed end is in arc-shaped or cone tip shape.
It is an advantage of the invention that construction method is easy quickly, can be formed by the oblique drilling whitewashing of drilling rod of uniform size
Soil cement enlarged body, the steel pipe being inserted into afterwards pass through the angle bar guard member on supplement slip casting and tube wall being in reversed acanthoid and short muscle, from
And be bonded with soil cement enlarged body composition, form the steel pipe soil cement one force structure of high-bearing capacity.
Detailed description of the invention
Fig. 1 is the schematic diagram for creeping into and applying soil cement enlarged body in the present invention using mixing pile drilling machine;
Fig. 2 is the schematic diagram for creeping into and applying soil cement enlarged body in the present invention using jet drill rig;
Fig. 3 is the schematic diagram being inserted into steel pipe in the present invention in soil cement enlarged body;
Fig. 4 is the steel pipe schematic diagram in the present invention with arc-shaped closed end;
Fig. 5 is the steel pipe schematic diagram in the present invention with pile top shape closed end;
Fig. 6 is steel pipe soil cement one force structure and upper load body connection schematic diagram in the present invention.
Specific embodiment
Feature of the invention and other correlated characteristics are described in further detail by embodiment below in conjunction with attached drawing, with
Convenient for the understanding of technical staff of the same trade:
Such as Fig. 1-6, label 1-13 is respectively in figure:Drilling machine 1, stirring-head 3, soil cement enlarged body 4, inserts steel pipe dress at drilling rod 2
Set 5, steel pipe 6, short muscle 7, injected hole 8, angle bar guard member 9, cuff 10, closed end 11, upper load body 12, steel pipe soil cement
Integrated force structure 13.
Embodiment 1:The present embodiment forms the construction method of beaer more particularly to a kind of oblique steel pipe combination soil cement, should
Construction method includes the following steps:
(1)As shown in Figure 1, drilling machine 1 is moved to position to be onstructed, drilling machine 1 is a mixing pile drilling machine, adjusts drilling rod thereon
Inclination angle between 2 and ground is to design requirement;After angular adjustment to be done, start the oblique drilling and forming hole into the soil body of drilling rod 2;
(2)As shown in Figure 1, drilling rod 2 continues drilling one after to the drilling to projected depth of stirring-head 3 of 2 front end of drilling rod
Section distance, while by the outside jet cement slurries of stirring-head 3, cement grout and mud mixing structure under the stirring of stirring-head 3
At oblique uniform soil cement enlarged body 4, beaer bearing capacity is preferable;
(3)As shown in Fig. 1,3,4,5, after the construction of soil cement enlarged body 4 to be done, 2 lift-off of drilling rod is drilled;Choose one
Outer diameter is slightly larger than the steel pipe 6 of aforementioned drilling internal diameter, and the two constitutes interference fit, so that steel pipe 6 can be in the soil body by frictional resistance
Power;Steel pipe 6 is inserted into soil cement enlarged body 4 along aforementioned drilling using the slotting steel pipe device 5 on drilling machine 1;
Wherein, it on 6 end tube wall of steel pipe, i.e., on the contacting pipe wall surface of steel pipe 6 and soil cement enlarged body 4, is spaced apart
There are several short muscle 7 and injected hole 8, is used to increase the swimming cloths power of steel pipe 6 on the short oblique wall surface for being welded in steel pipe 6 of muscle 7;
It is disposed with the angle bar guard member 9 in reversed acanthoid in the outside of each injected hole 8, which can prevent soil-cement body from hindering
Injected hole 8 is filled in, and the combination stability between steel pipe 6 and soil cement enlarged body 11 can be improved;Furthermore it is also set in the end of steel pipe 6
There is closed end 11, the connection between closed end 11 and steel pipe 6 is realized by cuff 10, and the setting of cuff 10 can be in the company of realization
Steel pipe 6 is improved while connecing effect with the contact area between soil cement enlarged body 4, to improve combination stability;In addition, envelope
Closed end head 11 can be in arc-shaped as shown in Figure 4, can also be in cone tip shape as shown in Figure 5, same on closed end 11
Offer injected hole 8 and angle bar guard member 9;
(4)As seen in figures 3-6, after steel pipe 6 is inserted into soil cement enlarged body 4, the external slip casting in 6 upper end of steel pipe is set
It is standby, backward steel pipe 6 in injection slurries carry out supplement slip casting, injected hole 8 of the slurries through end overflows outward, filling steel pipe 6 with
Gap between soil cement enlarged body 4 constitutes steel pipe soil cement one so that steel pipe 6 be made preferably to be combined with soil cement enlarged body 4
Body force structure 13, to provide bearing capacity to top charge carrier 12.
Embodiment 2:As shown in Fig. 2, the present embodiment forms beaer more particularly to a kind of oblique steel pipe combination soil cement
Construction method, the construction method difference from example 1 is that:Drilling machine 1 is specially a rotary churning pile drilling machine, in its drilling rod 2
Corresponding gunniting hole is distributed in end-bit, after projected depth of the drilling of drilling rod 2 into the soil body, 2 end of drilling rod starts
Jet cement slurries, i.e. high-pressure rotary-spray drilling, are integrated so that cement grout be made to mix with mud, and one section of formation is oblique uniform
The diameter of soil cement enlarged body 4, soil cement enlarged body 4 is greater than bore diameter.
The construction method of remaining step is same as described in embodiment 1 in the present embodiment, and so it will not be repeated.
Claims (6)
1. the construction method that a kind of oblique steel pipe combination soil cement forms beaer, it is characterised in that the construction method includes such as
Lower step:Starting drilling machine pierces soil body pore-forming for drilling rod is oblique, and after reaching designated depth, the drilling rod continues to creep into and spray
Cement grout is to form one section of soil cement enlarged body;The drilling rod lift-off is drilled, later inserts a steel pipe along the drilling
Enter into the soil cement enlarged body, several slip castings are distributed on the contact surface of the steel tube end part and the soil cement enlarged body
Hole;Supplement slip casting is carried out into the soil cement enlarged body through the injected hole on the steel pipe, makes the steel pipe and the cement
Native enlarged body is integrally formed structure;The steel tube end part is provided with closed end, connects between the two through cuff banding, the envelope
Several injected holes are distributed on closed end head, are provided with angle bar guard member on the outside of the injected hole.
2. a kind of oblique steel pipe combination soil cement according to claim 1 forms the construction method of beaer, feature exists
In the drilling machine be one of mixing pile drilling machine or rotary churning pile drilling machine.
3. a kind of oblique steel pipe combination soil cement according to claim 1 forms the construction method of beaer, feature exists
It is greater than the drilling internal diameter in the outer diameter of steel pipes.
4. a kind of oblique steel pipe combination soil cement according to claim 1 forms the construction method of beaer, feature exists
The angle bar guard member in reversed acanthoid is provided on the outside of the injected hole on the steel pipe.
5. a kind of oblique steel pipe combination soil cement according to claim 1 forms the construction method of beaer, feature exists
In being welded with several short muscle of inclination on the contact surface of the steel pipe and the soil cement enlarged body.
6. a kind of oblique steel pipe combination soil cement according to claim 1 forms the construction method of beaer, feature exists
In the closed end in arc-shaped or cone tip shape.
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