CN108797653A - A kind of construction method carrying out structural anti-buoyancy using deep foundation pit fender post - Google Patents
A kind of construction method carrying out structural anti-buoyancy using deep foundation pit fender post Download PDFInfo
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- CN108797653A CN108797653A CN201810568441.XA CN201810568441A CN108797653A CN 108797653 A CN108797653 A CN 108797653A CN 201810568441 A CN201810568441 A CN 201810568441A CN 108797653 A CN108797653 A CN 108797653A
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- Prior art keywords
- foundation pit
- construction
- concrete
- deep foundation
- floating
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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
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
A kind of construction method being carried out structural anti-buoyancy using deep foundation pit fender post, is included the following steps：(1) deep foundation pit support goes along with sb. to guard him pile driving construction, (2) foundation pit support construction, (3) deep foundation pit precipitation and earth excavation, (4) fender post protection concrete cover picks chisel, (5) are welded to connect U-shaped steel bar stress, (6) anti-floating beam reinforced steel bar concrete, (7) sole plate waterproof roll and protective layer construction, the construction of (8) sole plate reinforced concrete, (9) basement structure construction.The present invention is directed to the other technologies measure of underground high water level Deep Foundation Structure anti-floating setting, on the one hand, buoyancy is reached deep foundation pit fender post (wall) by deep foundation by anti-floating beam (plate), it makes full use of and goes along with sb. to guard him piling wall vertically pulling-resistant ability resistance buoyancy force of underground water, reduce setting anti-floating pile (anchor pole) construction input；On the other hand, agent structure sole plate is connect with anti-floating concrete beam (plate) by biting connecions power transmission keyway, is conducive to waterproofing for basement.
Description
Technical field
The present invention relates to technical field of building construction, belong to the underground structure anti-floating construction technology of building engineering field, relate to
And a kind of construction method carrying out structural anti-buoyancy using deep foundation pit fender post.
Background technology
As urban construction continues to develop, the utilization of the underground space are gradually increased, it is tight to alleviate urban land resource
In project development depth, deep development is extended to by shallow-layer exploitation by Zhang Wenti.The buoyancy force of underground water of deep foundation crosses conference and causes ground
Lower structure floats or even component damage.Currently, using setting anti-floating pile, anti-float anchor rod, increase structure weight and drop row in engineering
The methods of water is solved.Conventional construction method, which exists, to be increased construction period, increases project inputs, is unfavorable for engineering and is used rank
Many drawbacks such as section maintenance management.
Invention content
It is an object of the invention in place of overcome the deficiencies in the prior art, provide a kind of removable dewatering well wellhead sealing dress
It sets and slip casting plugging construction method.The construction method in high permeability, high water level, contain abundant area, using the present invention seal
Stifled dewatering well reliable in quality, can meet the requirements.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of construction method being carried out structural anti-buoyancy using deep foundation pit fender post, is included the following steps：
(1) deep foundation pit support goes along with sb. to guard him pile driving construction：According to Design of Deep Foundation Pit Support construction fender post, fender post uses reinforced concrete
The schemes such as campshed or diaphram wall of perfusion；
(2) foundation pit support construction：According to Design of Deep Foundation Pit Support scheme construction foundation pit inner support system, reinforced concrete support with
Fender post is reliably connected；
(3) deep foundation pit precipitation and earth excavation：Foundation pit waterproof curtain intensity reaches design requirement, carries out base pit dewatering.It presses
According to layering, segmentation, on-demand precipitation technology requires to construct, and underground water is down to cutting depth 1m or less and carries out base in excavation range
Cheat earth excavation；
(4) fender post protection concrete cover picks chisel：1 anti-floating depth of beam of piling wall is gone along with sb. to guard him in excavation of foundation pit to substrate absolute altitude, cleaning
Range inner protective layer concrete exposes connection embedded part or stress main reinforcement；
(5) it is welded to connect U-shaped steel bar stress：Weld stress " u "-shaped reinforcing bar in anti-floating concrete beam, diameter, the spacing warp of reinforcing bar
Anti-floating, which calculates, to be determined, reinforcement welding welding by both sides is no less than 5d or single welding length is not less than 10d；
(6) anti-floating beam reinforced steel bar concrete：After the completion of connecting U-shaped reinforcement welding, the binding of anti-floating girder construction reinforcing bar and side form are carried out
Installation, side form use die mould steel form, and qualified progress concrete placings, concrete strength are not less than C30 by inspection for reinforcing bar and template；
(7) sole plate waterproof roll and protective layer construction：Wait for that sole plate bed course and anti-floating beam concrete coagulate soil and pour completion
Sole plate and side waterproof coiled material construction are carried out, coiled material height in side meets overlap joint and requires, and acceptance(check) carries out waterproofing protection
Layer construction.
(8) sole plate reinforced concrete is constructed：The binding of sole plate reinforcing bar, template installation and concrete are carried out according to design drawing to pour
Construction is built, pays attention to protecting waterproof layer in work progress；
(9) basement structure construction；Basement structure reinforced concrete, waterproof roll and protective layer are carried out according to design drawing to apply
Then work carries out outdoor fertile slot backfill construction.
Above-mentioned biting connecions stress sunk key width is 150~200mm, and depth is 50~80mm, and corner is 45 °.
Above structure plate outer side biting connecions stress sunk key is arranged on the outside of sole plate, and through Design of Main Structure unit
Approve.
Before above-mentioned anti-floating beam resists buoyancy force of underground water, concrete strength must reach design requirement.
D is bar diameter in above-mentioned steps (5).
Advantages of the present invention and economic effect are：
The present invention is directed to the other technologies measure of underground high water level Deep Foundation Structure anti-floating setting, on the one hand, deep foundation is logical
It crosses anti-floating beam (plate) and buoyancy is reached into deep foundation pit fender post (wall), make full use of and go along with sb. to guard him piling wall vertically pulling-resistant ability resistance underground water
Buoyancy reduces setting anti-floating pile (anchor pole) construction input；On the other hand, agent structure sole plate passes through with anti-floating concrete beam (plate)
Biting connecions power transmission keyway connects, and is conducive to waterproofing for basement.
Description of the drawings
Fig. 1 is that the present invention utilizes fender post float Structure figure；
Fig. 2 is fender post of the present invention and sole plate connection diagram；
Fig. 3 is anti-floating side bar stress sunk key structural schematic diagram of the present invention.
Specific implementation mode
For that can further appreciate that present disclosure, feature and effect, the following examples are hereby given, and coordinates attached drawing detailed
It is described as follows.It should be noted that the present embodiment is descriptive, it is not restrictive, cannot thus limits the guarantor of the present invention
Protect range.
As shown in Figure 1 to Figure 3, a kind of retaining piles construction method of deep basal pit closing sealing, includes the following steps：
(1) deep foundation pit support fender post (wall) is constructed：According to Design of Deep Foundation Pit Support construction fender post (wall) 1, fender post
(wall) 1 is using schemes such as reinforcing bar concrete pouring campshed or diaphram walls；
(2) foundation pit support construction：According to Design of Deep Foundation Pit Support scheme construction foundation pit inner support system 2, reinforced concrete (steel)
Support 2 is reliably connected with fender post (wall) 1；
(3) deep foundation pit precipitation and earth excavation：Foundation pit waterproof curtain intensity reaches design requirement, carries out base pit dewatering.It presses
According to layering, segmentation, on-demand precipitation technology requires to construct, and underground water is down to cutting depth 1m or less and carries out base in excavation range
Cheat earth excavation；
(4) fender post (wall) 1 protects concrete cover to pick chisel：1 anti-floating beam of piling wall is gone along with sb. to guard him in excavation of foundation pit to substrate absolute altitude, cleaning
(plate) 3 altitude range inner protective layer concrete exposes connection embedded part or stress main reinforcement；
(5) it is welded to connect U-shaped steel bar stress 10：Weld stress " u "-shaped reinforcing bar 10 in anti-floating concrete beam (plate) 3, reinforcing bar it is straight
Diameter, spacing are calculated through anti-floating and are determined, reinforcement welding welding by both sides is no less than 5d or single welding length, and not less than 10d, (d is that reinforcing bar is straight
Diameter)；
(6) anti-floating beam reinforced steel bar concrete 3：After the completion of connecting 10 welding of U-shaped reinforcing bar, the binding of anti-floating beam (plate) structure reinforcing bars is carried out
And side form installation, using die mould steel form (convenient for the 9 part concrete placings molding of stress keyway), reinforcing bar and template experience fold side form
Lattice carry out concrete placings, and concrete strength is not less than C30；
(7) sole plate waterproof roll and protective layer 5 are constructed：Wait for that sole plate bed course 4 and 3 concrete of anti-floating beam (plate) coagulate soil and pour
It builds completion and carries out sole plate 6 and the construction of side waterproof roll 5, coiled material 5 height in side meets overlap joint and requires, and acceptance(check) carries out
Fish tail and waterproof layer is constructed.
(8) 6 reinforced concrete of sole plate is constructed：The binding of 6 reinforcing bar of sole plate, template installation and concrete are carried out according to design drawing
Pouring construction pays attention to protecting waterproof layer 5 in work progress；
(9) basement structure 7 is constructed；7 structure reinforcing bars concrete of basement, waterproof roll and protective layer are carried out according to design drawing
Then construction carries out the outdoor fertile backfill of slot 8 construction.
The present invention constructs suitable for high water level area underground structure anti-floating, and the present invention is directed to underground high water level Deep Foundation Structure
The other technologies measure of anti-floating setting, on the one hand, buoyancy is reached deep foundation pit fender post (wall) by deep foundation by anti-floating beam (plate),
It makes full use of and goes along with sb. to guard him piling wall vertically pulling-resistant ability resistance buoyancy force of underground water, reduce setting anti-floating pile (anchor pole) construction input；It is another
Aspect, agent structure sole plate are connect by biting connecions power transmission keyway with anti-floating concrete beam (plate), are conducive to basement waterproofing and apply
Work.
The present invention does not limit to the above embodiment, anyone can obtain other various forms under the inspiration of the present invention
Product.All equivalent changes and modifications done according to scope of the present invention patent should all belong to the covering scope of the present invention.
Claims (5)
1. a kind of construction method carrying out structural anti-buoyancy using deep foundation pit fender post, it is characterised in that：Include the following steps：
(1) deep foundation pit support goes along with sb. to guard him pile driving construction：According to Design of Deep Foundation Pit Support construction fender post, fender post uses reinforcing bar concrete pouring
The schemes such as campshed or diaphram wall；
(2) foundation pit support construction：According to Design of Deep Foundation Pit Support scheme construction foundation pit inner support system, reinforced concrete is supported and is gone along with sb. to guard him
Stake is reliably connected；
(3) deep foundation pit precipitation and earth excavation：Foundation pit waterproof curtain intensity reaches design requirement, carries out base pit dewatering.According to point
Layer, segmentation, on-demand precipitation technology require to construct, and underground water is down to cutting depth 1m or less and carries out foundation pit earth in excavation range
It excavates side；
(4) fender post protection concrete cover picks chisel：1 anti-floating depth of beam range of piling wall is gone along with sb. to guard him in excavation of foundation pit to substrate absolute altitude, cleaning
Inner protective layer concrete exposes connection embedded part or stress main reinforcement；
(5) it is welded to connect U-shaped steel bar stress：Stress " u "-shaped reinforcing bar in anti-floating concrete beam is welded, the diameter of reinforcing bar, spacing are through anti-floating
It calculates and determines, reinforcement welding welding by both sides is no less than 5d or single welding length is not less than 10d；
(6) anti-floating beam reinforced steel bar concrete：After the completion of connecting U-shaped reinforcement welding, the binding of anti-floating girder construction reinforcing bar and side form installation are carried out,
Side form uses die mould steel form, and qualified progress concrete placings, concrete strength are not less than C30 by inspection for reinforcing bar and template；
(7) sole plate waterproof roll and protective layer construction：Wait for that sole plate bed course and anti-floating beam concrete coagulate soil and pour completion progress
Sole plate and side waterproof coiled material construction, side coiled material height meet overlap joint and require, and acceptance(check) carries out fish tail and waterproof layer and applies
Work.
(8) sole plate reinforced concrete is constructed：The binding of sole plate reinforcing bar, template installation and concrete placings are carried out according to design drawing to apply
Work pays attention to protecting waterproof layer in work progress；
(9) basement structure construction；Basement structure reinforced concrete, waterproof roll and protective layer construction are carried out according to design drawing,
Then outdoor fertile slot backfill construction is carried out.
2. a kind of construction method being carried out structural anti-buoyancy using deep foundation pit fender post according to claim 1, feature are existed
In：Above-mentioned biting connecions stress sunk key width is 150~200mm, and depth is 50~80mm, and corner is 45 °.
3. a kind of construction method being carried out structural anti-buoyancy using deep foundation pit fender post according to claim 1, feature are existed
In：Above structure plate outer side biting connecions stress sunk key is arranged on the outside of sole plate, and approves through Design of Main Structure unit.
4. a kind of construction method being carried out structural anti-buoyancy using deep foundation pit fender post according to claim 1, feature are existed
In：Before above-mentioned anti-floating beam resists buoyancy force of underground water, concrete strength must reach design requirement.
5. a kind of construction method being carried out structural anti-buoyancy using deep foundation pit fender post according to claim 1, feature are existed
In：D is bar diameter in above-mentioned steps (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810568441.XA CN108797653A (en) | 2018-06-05 | 2018-06-05 | A kind of construction method carrying out structural anti-buoyancy using deep foundation pit fender post |
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| CN201810568441.XA CN108797653A (en) | 2018-06-05 | 2018-06-05 | A kind of construction method carrying out structural anti-buoyancy using deep foundation pit fender post |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733894A (en) * | 2020-06-10 | 2020-10-02 | 中国一冶集团有限公司 | Anti-floating system of deep foundation pit underground structure and construction process |
| CN114164859A (en) * | 2021-12-28 | 2022-03-11 | 中建东设岩土工程有限公司 | Well type intelligent underground parking garage suitable for northern cold environment |
| CN114411819A (en) * | 2021-12-12 | 2022-04-29 | 中建三局集团有限公司 | Method for replacing anti-floating measure by permanently and temporarily combining supporting system and main body structure |
| CN114575391A (en) * | 2020-11-29 | 2022-06-03 | 中铁十二局集团有限公司 | Subway station floating beam resisting construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733894A (en) * | 2020-06-10 | 2020-10-02 | 中国一冶集团有限公司 | Anti-floating system of deep foundation pit underground structure and construction process |
| CN114575391A (en) * | 2020-11-29 | 2022-06-03 | 中铁十二局集团有限公司 | Subway station floating beam resisting construction method |
| CN114575391B (en) * | 2020-11-29 | 2023-10-13 | 中铁十二局集团有限公司 | Subway station anti-floating beam construction method |
| CN114411819A (en) * | 2021-12-12 | 2022-04-29 | 中建三局集团有限公司 | Method for replacing anti-floating measure by permanently and temporarily combining supporting system and main body structure |
| CN114164859A (en) * | 2021-12-28 | 2022-03-11 | 中建东设岩土工程有限公司 | Well type intelligent underground parking garage suitable for northern cold environment |
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Application publication date: 20181113 |