CN107299652A - A kind of unilateral underpinning method in brick wall pedestal foot basis and ruggedized construction - Google Patents

A kind of unilateral underpinning method in brick wall pedestal foot basis and ruggedized construction Download PDF

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Publication number
CN107299652A
CN107299652A CN201710560194.4A CN201710560194A CN107299652A CN 107299652 A CN107299652 A CN 107299652A CN 201710560194 A CN201710560194 A CN 201710560194A CN 107299652 A CN107299652 A CN 107299652A
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CN
China
Prior art keywords
brick
steel
underpinning
unilateral
building block
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Pending
Application number
CN201710560194.4A
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Chinese (zh)
Inventor
李晓勇
顾国荣
李明
刘冬
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Shanghai Geotechnical Investigations and Design Institute Co Ltd
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Shanghai Geotechnical Investigations and Design Institute Co Ltd
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Application filed by Shanghai Geotechnical Investigations and Design Institute Co Ltd filed Critical Shanghai Geotechnical Investigations and Design Institute Co Ltd
Priority to CN201710560194.4A priority Critical patent/CN107299652A/en
Publication of CN107299652A publication Critical patent/CN107299652A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D37/00Repair of damaged foundations or foundation structures

Abstract

The present invention relates to a kind of unilateral underpinning method in brick wall pedestal foot basis, comprise the following steps:A) the horizontal cross perforate on brick wall, install L-shaped underpins translation building block;B) the transform beams of casting concrete, the transform beams, underpin translation building block, original basis bed course and pour integral, and vertical stake holes is reserved on the transform beams;C) steel-pipe pile is set to carry out strengthening of foundation in the stake holes using anchor jacked pile mode;D steel reinforcement cage) is laid in stake holes, steel reinforcement cage is enclosed on outside steel-pipe pile;E) concrete perfusion fills out core in steel-pipe pile, and casting concrete pile cover completes envelope stake.The present invention is underpined translation building block and combined using shaped steel welding, and newly-increased collar tie beam sets up antitorque reinforcing bar.After wall perforate, it will underpin rapidly in translation building block insertion porthole, and effectively reduce the porthole unsupported time, control deformation of wall;The unilateral underpinning in brick wall pedestal foot basis is simple in construction, and easy construction, reliability is higher.

Description

A kind of unilateral underpinning method in brick wall pedestal foot basis and ruggedized construction
Technical field
The present invention relates to a kind of unilateral underpinning method in wall brick pedestal foot basis and ruggedized construction, belong to architectural engineering skill Art field.
Background technology
Change due to surrounding enviroment, working load increase, the original each side such as adjust using function, reconnoitre, designing, constructing Cause, brick wood or brick-concrete building basis need to carry out strengthening of foundation processing.For existing building, basic both sides pair are typically employed in Claim to carry out underpinning.It need to be used during practice processes underpinning and brick wall is carried out opening shearing resistance groove or the forms such as muscle are worn on basis two Side is symmetrically underpined, and has reached the purpose of base shift reinforcement.
Conventional base underpinning method is perforate (shearing resistance groove), and installation underpins component, and concrete is used with underpining folder beam Pour integral, completion base shift reinforcement.Base shift reinforcement needs the symmetrical basis for digging out wall both sides, and construction period builds Building normally to use.The brick wall building for needing to be continuing with for strengthening of foundation construction period, interior can not construct, it is impossible to Use conventional reinforcement means.
Therefore need to carry out base shift reinforcement in wall one side, with built during ensuring strengthening construction it is normal using and The safe handling built after reinforcing.The method of the unilateral underpinning of existing wall, for example:Date of publication is on December 3rd, 2014, Publication No. is CN104179204A Chinese patent literature, and structure is complex, and difficulty of construction is also larger, and reliability also has not Foot.
The content of the invention
The technical problem to be solved in the invention is:Conventional base shift reinforcement method is, it is necessary to symmetrically dig out wall two The basis of side, interior can not construct;The method of the unilateral underpinning of existing wall, structure is complex, difficulty of construction also compared with Greatly, reliability also has deficiency.
The present invention takes following technical scheme:
A kind of unilateral underpinning method in brick wall pedestal foot basis, comprises the following steps:A) horizontal cross is opened on brick wall 3 Hole, install L-shaped underpins translation building block 6;B) the transform beams 8 of casting concrete, the transform beams 8, underpin translation building block 6, it is former Blinding layer 1 pours integral, reserved vertical stake holes 7 on the transform beams;C) using anchor jacked pile mode in the stake Steel-pipe pile 4 is set to carry out strengthening of foundation in hole 7;D steel reinforcement cage 5) is laid in stake holes 7, steel reinforcement cage 5 is enclosed on outside steel-pipe pile 4;E) steel Concrete perfusion fills out core in pile tube 4, and casting concrete pile cover 9 completes envelope stake.
Further, step B) in, aperture gradually increases reserved stake holes 7 from top to bottom.
A kind of unilateral underpinning structure in brick wall pedestal foot basis, including underpining for original basis bed course 1, brick wall 3, L-shaped turn Change component 6, transform beams 8, steel reinforcement cage 5, pile cover 9;Horizontal cross perforate on brick wall 3, the translation building block 6 that underpins of L-shaped inserts the hole It is interior;Transform beams 8, underpin translation building block 6, original basis bed course 1 and pour integral, reserved vertical stake holes 7 on the transform beams;Stake It is provided with hole 7 outside steel-pipe pile 4, steel-pipe pile 4 and is arranged steel reinforcement cage 5;Concrete perfusion fills out core in steel-pipe pile 4, and the top of transform beams 8 is poured Build concrete pile follower 9.
Further, it is described underpin translation building block 6 it is vertical with steel-pipe pile 4, staggeredly, it is alternate set.
Further, the transform beams 8 are arranged on the outside of brick wall, and the dress L-shaped underpins the end of translation building block 6 and brick The inner side of wall 3 is concordant.
Further, the stake holes 7 is square hole.
Further, the bottom of brick wall is pressed close in the position of horizontal cross perforate on brick wall 3.
Further, translation building block 6 is underpined to be welded using shaped steel.
The beneficial effects of the present invention are:
1) underpin translation building block to combine using shaped steel welding, newly-increased collar tie beam sets up antitorque reinforcing bar.It is fast after wall perforate Speed will be underpined in translation building block insertion porthole, effectively be reduced the porthole unsupported time, be controlled deformation of wall.
2) reinforced in the certain limit of steel-pipe pile top using steel reinforcement cage, the bending rigidity of stake top can be improved.
3) translation building block, steel-pipe pile and transform beams are underpined and connect integral by concreting, underpin translation building block with Newly-increased collar tie beam connecting portion formation rigid body, the eccentric torque that effectively can be brought basic unilateral underpinning and Shear transfer to Steel-pipe pile, Path of Force Transfer is clear and definite, easy construction.
4) the unilateral underpinning in brick wall pedestal foot basis is simple in construction, and easy construction, reliability is higher.
Brief description of the drawings
Fig. 1 is the front sectional view of the unilateral underpinning structure in brick wall pedestal foot basis of the present invention.
Fig. 2 is Fig. 1 top view (being rotated by 90 °).
Fig. 3 is wall perforate, installs the front sectional view for the step of underpining translation building block.
Fig. 4 is Fig. 3 top view (being rotated by 90 °).
Fig. 5 is reserved stake holes, front sectional view during casting concrete foundation ring girder (transform beams).
Fig. 6 is Fig. 5 top view (being rotated by 90 °).
Front sectional view when when Fig. 7 being anchor rod static pressure pile driving construction.
Fig. 8 is Fig. 7 top view (being rotated by 90 °).
Fig. 9 is front sectional view when laying steel reinforcement cage.
Figure 10 is Fig. 9 top view (being rotated by 90 °).
Figure 11 is that concrete perfusion fills out core in steel-pipe pile, and casting concrete pile cover completes the front sectional view after envelope stake.
Figure 12 is Figure 11 top view (being rotated by 90 °).
In figure, 1. original basis bed courses, 2. former brick wall pedestal foot bases, 3. brick walls, 4. steel-pipe piles, 5. steel reinforcement cages, 6. underpin Translation building block, 7. stake holes, 8. transform beams, 9. pile covers.
Embodiment
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
A kind of unilateral underpinning method in brick wall pedestal foot basis, comprises the following steps:
Referring to Fig. 3-4, A) the horizontal cross perforate on brick wall 3, that installs L-shaped underpins translation building block 6;
Referring to Fig. 5-6, B) transform beams 8 of casting concrete, the transform beams 8, underpin translation building block 6, original basis bed course 1 Pour integral, reserved vertical stake holes 7 on the transform beams;
Referring to Fig. 7-8, C) set steel-pipe pile 4 to carry out strengthening of foundation in the stake holes 7 using anchor jacked pile mode;
Referring to Fig. 9-10, D) steel reinforcement cage 5 is laid in stake holes 7, steel reinforcement cage 5 is enclosed on outside steel-pipe pile 4;
Referring to Figure 11-12, E) concrete perfusion fills out core in steel-pipe pile 4, and casting concrete pile cover 9 completes envelope stake.
In this embodiment, step B) in, aperture gradually increases reserved stake holes 7 from top to bottom, and effect is to improve steel pipe Pin power when stake is poured, improves anti-die-cutting performance.
Referring to Fig. 1-12, a kind of unilateral underpinning structure in brick wall pedestal foot basis, including original basis bed course 1, brick wall 3, L Shape underpins translation building block 6, transform beams 8, steel reinforcement cage 5, pile cover 9;Horizontal cross perforate on brick wall 3, L-shaped underpins translation building block 6 insert in the hole;Transform beams 8, underpin translation building block 6, original basis bed course 1 and pour integral, it is vertical to be reserved on the transform beams Stake holes 7;It is provided with stake holes 7 outside steel-pipe pile 4, steel-pipe pile 4 and is arranged steel reinforcement cage 5;Concrete perfusion fills out core in steel-pipe pile 4, support Change the top casting concrete pile cover 9 of beam 8.
Referring to 10,12, it is described underpin translation building block 6 it is vertical with steel-pipe pile 4, staggeredly, alternate set.
Referring to 7,9, the transform beams 8 are arranged on the outside of brick wall, and the dress L-shaped underpins the end of translation building block 6 and brick The inner side of wall 3 is concordant.
Referring to Fig. 8,10, the stake holes 7 is square hole.
Referring to Fig. 9,11, the bottom of brick wall is pressed close in the position of horizontal cross perforate on brick wall 3.
Referring to Fig. 1,3,5,7, underpin translation building block 6 and be welded using shaped steel.
The unilateral underpinning structure will combine shaped steel as underpining translation building block, using being welded to connect, after brick wall perforate It can be rapidly inserted into porthole, easy construction.Translation building block and newly-increased collar tie beam formation rigid body are underpined, effectively one side can be underpined and added Gu moment of torsion and Shear transfer that bias is brought are to steel-pipe pile, Path of Force Transfer is clear and definite.Reinforcing bar is used in the range of the 3-5m of steel-pipe pile top Cage is reinforced, and can improve the bending rigidity of stake top.Meanwhile, porthole is circle, with arching, only produces ring shear force, Make that there is self-stable ability, Reducing distortion after brick wall perforate.
The model for underpining translation building block type, wall thickness, length and steel-pipe pile that is used in the present embodiment, the section of transform beams Size, arrangement of reinforcement are calculated according to brick wall bearing load and determined.
This example is in the specific implementation:First in the unilateral perforate of wall, porthole is circle, with arching, only produces ring To shear force, perforate terminates the rear rapid translation building block 6 that underpins by correspondence aperture and inserted in porthole, underpins translation building block 6 and uses type Steel is welded to connect, and underpins translation building block 6 and brick wall load is play supporting role, and controls deformation of wall;Reserved stake holes 7, pours coagulation The newly-increased collar tie beam of soil, after progress anchor jacked pile construction after collar tie beam maintenance to design strength;After the completion of piling, steel reinforcement cage 5, steel are placed Muscle cage length is determined according to actual conditions;Steel reinforcement cage is placed in steel-pipe pile and concrete perfusion, finally by the stake of coagulation grave, Steel-pipe pile and newly-increased collar tie beam are poured integral.Translation building block 6, steel-pipe pile 4 is underpined to be connected by concreting with transform beams 8 It is integral, underpin translation building block 6 and form firm domain with newly-increased collar tie beam connecting portion, will effectively can be made because of unilateral underpinning bias Into moment of torsion and Shear transfer to steel-pipe pile, Path of Force Transfer clearly, easy construction.
Above is the preferred embodiments of the present invention, those of ordinary skill in the art can also carry out various changes on this basis Change or improve, on the premise of the total design of the present invention is not departed from, these conversion or improvement should also be as belonging to application claims guarantor Within the scope of shield.

Claims (8)

1. a kind of unilateral underpinning method in brick wall pedestal foot basis, it is characterised in that comprise the following steps:
A) the horizontal cross perforate on brick wall (3), install L-shaped underpins translation building block (6);
B) the transform beams (8) of casting concrete, the transform beams (8), underpin translation building block (6), original basis bed course (1) and pour and build up It is overall, vertical stake holes (7) is reserved on the transform beams;
C) steel-pipe pile (4) is set to carry out strengthening of foundation in the stake holes (7) using anchor jacked pile mode;
D steel reinforcement cage (5)) is laid in stake holes (7), it is outside that steel reinforcement cage (5) is enclosed on steel-pipe pile (4);
E) steel-pipe pile (4) interior concrete perfusion fills out core, and casting concrete pile cover (9) completes envelope stake.
2. the unilateral underpinning method in brick wall pedestal foot basis as claimed in claim 1, it is characterised in that:Step B) in, in advance The stake holes (7) stayed gradually increases in aperture from top to bottom.
3. a kind of unilateral underpinning structure in brick wall pedestal foot basis, it is characterised in that:
Translation building block (6), transform beams (8), steel reinforcement cage (5), pile cover are underpined including original basis bed course (1), brick wall (3), L-shaped (9);
Horizontal cross perforate on brick wall (3), the translation building block (6) that underpins of L-shaped is inserted in the hole;Transform beams (8), underpin conversion structure Part (6), original basis bed course (1) pour integral, reserved vertical stake holes (7) on the transform beams;Steel pipe is provided with stake holes (7) Steel reinforcement cage (5) is arranged outside stake (4), steel-pipe pile (4);Steel-pipe pile (4) interior concrete perfusion fills out core, and transform beams (8) top is poured Concrete pile follower (9).
4. the unilateral underpinning structure in brick wall pedestal foot basis as claimed in claim 3, it is characterised in that:It is described to underpin conversion Component (6) is vertical with steel-pipe pile (4), staggeredly, alternate set.
5. the unilateral underpinning structure in brick wall pedestal foot basis as claimed in claim 3, it is characterised in that:The transform beams (8) be arranged on the outside of brick wall, the dress L-shaped to underpin translation building block (6) end concordant with the inside of brick wall (3).
6. the unilateral underpinning structure in brick wall pedestal foot basis as claimed in claim 3, it is characterised in that:The stake holes (7) For square hole.
7. the unilateral underpinning structure in brick wall pedestal foot basis as claimed in claim 3, it is characterised in that:Water on brick wall (3) The bottom of brick wall is pressed close in the position of flat lateral opening.
8. the unilateral underpinning structure in brick wall pedestal foot basis as claimed in claim 3, it is characterised in that:Underpin translation building block (6) it is welded using shaped steel.
CN201710560194.4A 2017-07-11 2017-07-11 A kind of unilateral underpinning method in brick wall pedestal foot basis and ruggedized construction Pending CN107299652A (en)

Priority Applications (1)

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CN201710560194.4A CN107299652A (en) 2017-07-11 2017-07-11 A kind of unilateral underpinning method in brick wall pedestal foot basis and ruggedized construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710560194.4A CN107299652A (en) 2017-07-11 2017-07-11 A kind of unilateral underpinning method in brick wall pedestal foot basis and ruggedized construction

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108457674A (en) * 2018-03-14 2018-08-28 山东交通学院 A kind of fault belt rock mass calamity grouting behind shaft or drift lining wall for grouting and its apply method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108457674A (en) * 2018-03-14 2018-08-28 山东交通学院 A kind of fault belt rock mass calamity grouting behind shaft or drift lining wall for grouting and its apply method

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