CN106592599A - Device capable of rapidly controlling displacement of foundation pit and construction method thereof - Google Patents
Device capable of rapidly controlling displacement of foundation pit and construction method thereof Download PDFInfo
- Publication number
- CN106592599A CN106592599A CN201611072038.5A CN201611072038A CN106592599A CN 106592599 A CN106592599 A CN 106592599A CN 201611072038 A CN201611072038 A CN 201611072038A CN 106592599 A CN106592599 A CN 106592599A
- Authority
- CN
- China
- Prior art keywords
- bracing members
- foundation ditch
- foundation pit
- purlin
- rod member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- E02D2600/00—Miscellaneous
- E02D2600/40—Miscellaneous comprising stabilising elements
Abstract
The invention relates to a device capable of rapidly controlling displacement of a foundation pit and a construction method thereof. Two ends of a steel bracing are arranged on two sides of an enclosure purlin paved by H-shaped steel profiles, then corresponding prestress is applied by a stress application rod, then three triangular wedge blocks are punched in two sides in a horizontal direction of a space between an end sealing plate of the steel bracing and the enclosure purlin at the bottom of the foundation pit, so that the applied prestess exists between the steel bracing and the enclosure purlin. The steel bracing is arranged in a position keeping away from an engineering pile of the whole bottom in steps to form a rapid displacement control device. Compared with the conventional foundation pit supporting manner, the device is capable of effectively controlling the horizontal displacement of the foundation pit during the time period for excavating to the bottom of the foundation pit, pouring the bottom boards and achieving corresponding strength; the foundation pits with complex surrounding environment and dense buildings, especially the foundation pits in subway protection areas, have strict requirements on control of the horizontal displacement. The device is capable of rapidly controlling the horizontal displacement of the foundation pit during the time period for excavating to the bottom of the foundation pit, pouring the bottom boards and achieving corresponding strength.
Description
Technical field
The present invention relates to foundation ditch displacement control device in a kind of deep foundation pit construction, is particularly well-suited to a kind of positioned at subway protection
In the range of etc. the surrounding enviroment complicated displacement control device and the construction that require excavation of foundation pit horizontal displacement strict deep basal pit
Method.
Background technology
Deep foundation pit construction is underground concealed engineering, there is certain risk, when especially closing on subway or building,
Excavation of foundation pit forms early favourable support system to bottom of foundation ditch, and reducing bottom of foundation ditch open-assembly time can effective control foundation ditch
Horizontal displacement, invent quick command displacement device it is convenient it is faster safer complete structure construction, similar engineering is had
Important directive significance.
Existing similar engineering construction technology mainly has：Hole bottom reinforces, divides storehouse excavation, piecemeal excavation, reinforcement cushion etc..But with
There is problems with upper construction technology：
Hole bottom reinforces increases larger construction cost, and the construction period；Jump storehouse excavate, piecemeal excavate be not suitable for narrow field,
The complicated small-scale pit of surrounding enviroment is not applied to；Reinforcement cushion, nothing relatively low in a few days ago inner concrete early strength for just having poured
Method forms effective force transfer system.
The content of the invention
It is an object of the invention to provide a kind of quick control foundation ditch gearshift and construction method, the device and construction party
Method can excavation of foundation pit on earth after, realize the effect of quick control foundation ditch displacement.
For achieving the above object, the technical scheme is that：A kind of quick control foundation ditch gearshift, is placed in base
The bed course in hole pour before substrate location, including bracing members, reinforcing rod member, triangle voussoir, the bracing members two ends are put respectively
Purlin both sides are enclosed by what H profile steel was laid in bottom of foundation ditch, and is applied after corresponding prestressing force by reinforcing rod member, the bracing members
Three pieces of triangle voussoirs are respectively squeezed in the horizontal direction both sides for enclosing the space between purlin of head plate and bottom of foundation ditch, make bracing members and
Enclose and there is the prestressing force for applying between purlin.
The reinforcing rod member is made up of square tube, jack, and the seal weld of square tube two ends is connected to steel plate, wherein one end and is welded with thousand
Jin top, is welded with two hangers above square tube length direction；One block of steel plate is welded between the square tube and jack, for increasing
Big lifting surface area.
The bracing members are made up of H profile steel and a head plate, and head plate is welded on the H profile steel two ends and is welded with end socket
Plate, the head plate is welded by one block of end socket steel plate and four pieces of triangular steel plates.
A kind of construction method using quick control foundation ditch gearshift, concretely comprises the following steps：Excavation of foundation pit on earth after, by steel
Support is placed in the enclosing in purlin framework of bottom of foundation ditch H profile steel laying, then bracing members platform is hung by crane be placed into it is corresponding
Position；Afterwards crane hangs reinforcing rod member by platform, hangs to bracing members side, applies corresponding by the jack reinforced on rod member
Prestressing force, it is then triangle voussoir is each from the horizontal direction both sides that the head plate and bottom of foundation ditch of bracing members enclose space between purlin
Squeeze into block, it is ensured that bracing members and bottom of foundation ditch enclose between purlin prestress application in place；Then the jack on reinforcing rod member is unclamped；
Constantly all bracing members are all applied repeat the above steps prestressing force.
The invention has the beneficial effects as follows：Traditional pattern foundation pit supporting structure mode is compared, in excavation of foundation pit to substrate to bottom slab concreting
And reach in this period of respective strengths, the present invention during this period of time can well control Foundation Pit.In week
Surrounding environment is complicated, displacement of the intensive foundation ditch particularly in subway protection region of building to foundation ditch level has strict control
System requires, can quickly control excavation of foundation pit to substrate to bottom slab concreting by the present invention and reach this period of respective strengths
Interior Foundation Pit.
Then the present invention is hung by the rod member of processing reinforcing outside the venue, bracing members and triangle voussoir by the quick platform of loop wheel machine, is pacified
Put to substrate location, form overall force transfer system, reach the effect of control Foundation Pit.Therefore, the device and construction party
Method can excavation of foundation pit on earth after, realize the effect of quick control foundation ditch displacement.
Description of the drawings
Fig. 1 is the device and construction method schematic diagram of the present invention；
Fig. 2 is the sectional view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is bracing members schematic diagram；
Fig. 5 is bracing members and end socket plate structure schematic diagram；
Fig. 6 is the left sectional view of Fig. 5；
Fig. 7 is reinforcing rod member schematic perspective view；
Fig. 8 is reinforcing rod member floor map；
Fig. 9 is partial enlarged drawing at hanger in Fig. 8；
Figure 10 is left sectional view at hanger in Fig. 9；
Figure 11 is triangle voussoir front view；
Figure 12 is the left view of Figure 11.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with embodiment.
As shown in Figures 1 to 12, a kind of quick control foundation ditch gearshift, is placed in the substrate before the bed course of foundation ditch is poured
Position, including bracing members 1, reinforcing rod member 2, H profile steel 3, triangle voussoir 4.The two ends of bracing members 1 are respectively placed in bottom of foundation ditch by H
Purlin both sides are enclosed in the laying of shaped steel 3, and are applied after corresponding prestressing force by reinforcing rod member 2, the head plate 6 of the bracing members 1 with
Three pieces of triangle voussoirs 4 are respectively squeezed in the horizontal direction both sides for enclosing the space between purlin of bottom of foundation ditch（Figure 11,12）, make bracing members
1 and enclose between purlin have apply prestressing force.
Such as Fig. 7, shown in 8,9,10, reinforcing rod member is by 11,2 pieces of hanger, 12,10 groups of the jack of steel plate of square tube 9,2
Into；There is the sealing welding of steel plate 12 at the two of square tube 9, jack 10 is welded on one, adopting full weld, weld seam to be not less than 8mm；Plus
Power rod member 2 is welded on of square tube 9 by jack 10, and 2 hangers 11 of welding facilitate loop wheel machine 13 to hang in the middle of square tube 9.It is very heavy
10, top is placed in of square tube 9, and one block of steel plate 12 is welded between jack 10, and for increasing lifting surface area, another side is same
Sample is welded using steel plate 12, is conveniently reinforced rod member 2 and is enclosed and apply between purlin prestressing force.The position of hanger 11 on the center line of square tube 9,
Particular location is determined by calculating its position of centre of gravity, keeps reinforcing rod member own level state when facilitating loop wheel machine 13 to hang.
Such as Fig. 4, shown in 5,6, bracing members are made up of H profile steel 3 and 2 head plates 6, and head plate 6 is by one piece bigger than H profile steel one
The end socket steel plate 8 of circle and 4 pieces of triangular steel plates 7 are welded, and end socket steel plate 8 is welded in H profile steel 3, and triangular steel plate 7 is located at H
3 four angles of shaped steel to four angles of end socket steel plate 8 adopt full weld, weld seam to be not less than 8mm.
A kind of construction method using quick control foundation ditch gearshift, concretely comprises the following steps：Excavation of foundation pit on earth after, first really
The framework of quick control foundation ditch gearshift is set, then is hung to hang bracing members 1 by loop wheel machine 13 and is placed into corresponding position
Put；Afterwards crane 13 hangs reinforcing rod member 2 by platform, hangs to the side of bracing members 1, is applied by reinforcing the jack 10 on rod member 2
Plus corresponding prestressing force；Then by triangle voussoir 4 is from the head plate 6 of bracing members 1 and encloses the horizontal direction two in space between purlin
Side respectively squeezes into 3 pieces, it is ensured that bracing members 1 and enclose between purlin prestress application in place；Then the jack on reinforcing rod member 2 is unclamped
10；Constantly all bracing members in place 1 are all applied repeat the above steps prestressing force；Then carry out place inner cushion layer to pour,
Whole device is all poured in bed course, base plate and main structure construction are carried out afterwards.
Claims (4)
1. a kind of quick control foundation ditch gearshift, is placed in the substrate location before the bed course of foundation ditch is poured, including bracing members
(1), rod member (2), triangle voussoir (4) are reinforced, it is characterised in that：Bracing members (1) two ends are respectively placed in bottom of foundation ditch by H
What shaped steel (3) was laid encloses purlin both sides, and is applied after corresponding prestressing force by reinforcing rod member (2), the end socket of the bracing members (1)
Three pieces of triangle voussoirs (4) are respectively squeezed in the horizontal direction both sides for enclosing the space between purlin of plate (6) and bottom of foundation ditch, make bracing members
(1) and enclose between purlin have apply prestressing force.
2. quick control foundation ditch gearshift according to claim 1, it is characterised in that：Reinforcing rod member (2) is by side
Pipe (9), jack (10) composition, square tube (9) two ends seal weld is connected to steel plate (12), wherein one end and is welded with jack (10),
Two hangers (11) are welded with above square tube (10) length direction.
3. quick control foundation ditch gearshift according to claim 1, it is characterised in that：The bracing members (1) are by H profile steel
(3) constitute with two head plates (6), head plate (6) is welded on the H profile steel (3) two ends, and the head plate (6) is by one piece of envelope
Head steel plate (8) and four pieces of triangular steel plates (7) are welded.
4. a kind of construction method of the quick control foundation ditch gearshift described in any one of employing claim 1-3, its feature exists
In concretely comprising the following steps：Excavation of foundation pit on earth after, by bracing members (1) be placed in bottom of foundation ditch H profile steel laying enclose in purlin framework,
Then bracing members (1) platform is hung by crane (13) and is placed into corresponding position；Afterwards crane (13) hangs reinforcing rod member by platform
(2), hang to bracing members (1) side, corresponding prestressing force is applied by the jack (10) reinforced on rod member (2), then by three
Angular voussoir (4) is respectively squeezed into from the horizontal direction both sides that the head plate (6) and bottom of foundation ditch of bracing members (1) enclose space between purlin
(3) block, it is ensured that bracing members (1) and bottom of foundation ditch enclose between purlin prestress application in place；Then thousand in reinforcing rod member (2) are unclamped
Jin top (10)；Constantly all bracing members (1) are all applied repeat the above steps prestressing force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072038.5A CN106592599B (en) | 2016-11-29 | 2016-11-29 | Device for rapidly controlling foundation pit displacement and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072038.5A CN106592599B (en) | 2016-11-29 | 2016-11-29 | Device for rapidly controlling foundation pit displacement and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106592599A true CN106592599A (en) | 2017-04-26 |
| CN106592599B CN106592599B (en) | 2020-03-27 |
Family
ID=58593993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611072038.5A Active CN106592599B (en) | 2016-11-29 | 2016-11-29 | Device for rapidly controlling foundation pit displacement and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106592599B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476314A (en) * | 2017-08-22 | 2017-12-15 | 中建八局第三建设有限公司 | A kind of deep basal pit bed course adds axle power construction method |
| CN110984166A (en) * | 2019-10-30 | 2020-04-10 | 上海建工集团股份有限公司 | Prefabricated reinforced concrete support used in narrow pit bottom bedding layer and construction method |
Citations (5)
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| KR100720321B1 (en) * | 2005-04-19 | 2007-05-25 | 주식회사 서영엔지니어링 | Auto-syncronized supporting system controlling to recover and offset displacement and repulsive force occurred according to working load, and constructing method of the supporting system |
| CN101294388A (en) * | 2007-04-27 | 2008-10-29 | 上海市第五建筑有限公司 | Construction method for support part to early dismount for super large area deep foundation pit |
| CN102720201A (en) * | 2012-07-02 | 2012-10-10 | 中建三局第二建设工程有限责任公司 | Support change construction building method implemented by using main structure of building |
| CN103290851A (en) * | 2013-06-28 | 2013-09-11 | 上海强劲地基工程股份有限公司 | Prestressed steel support used for controlling internal and external differential displacement of foundation pit enclosure wall and construction method |
| CN203654299U (en) * | 2014-01-02 | 2014-06-18 | 中铁三局集团有限公司 | Steel support loose end |
-
2016
- 2016-11-29 CN CN201611072038.5A patent/CN106592599B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100720321B1 (en) * | 2005-04-19 | 2007-05-25 | 주식회사 서영엔지니어링 | Auto-syncronized supporting system controlling to recover and offset displacement and repulsive force occurred according to working load, and constructing method of the supporting system |
| CN101294388A (en) * | 2007-04-27 | 2008-10-29 | 上海市第五建筑有限公司 | Construction method for support part to early dismount for super large area deep foundation pit |
| CN102720201A (en) * | 2012-07-02 | 2012-10-10 | 中建三局第二建设工程有限责任公司 | Support change construction building method implemented by using main structure of building |
| CN103290851A (en) * | 2013-06-28 | 2013-09-11 | 上海强劲地基工程股份有限公司 | Prestressed steel support used for controlling internal and external differential displacement of foundation pit enclosure wall and construction method |
| CN203654299U (en) * | 2014-01-02 | 2014-06-18 | 中铁三局集团有限公司 | Steel support loose end |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476314A (en) * | 2017-08-22 | 2017-12-15 | 中建八局第三建设有限公司 | A kind of deep basal pit bed course adds axle power construction method |
| CN110984166A (en) * | 2019-10-30 | 2020-04-10 | 上海建工集团股份有限公司 | Prefabricated reinforced concrete support used in narrow pit bottom bedding layer and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106592599B (en) | 2020-03-27 |
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