CN109440783A - A kind of the monoblock type foundation pit horizontal struts system and its construction method of precast assembly - Google Patents
A kind of the monoblock type foundation pit horizontal struts system and its construction method of precast assembly Download PDFInfo
- Publication number
- CN109440783A CN109440783A CN201811573013.2A CN201811573013A CN109440783A CN 109440783 A CN109440783 A CN 109440783A CN 201811573013 A CN201811573013 A CN 201811573013A CN 109440783 A CN109440783 A CN 109440783A
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- China
- Prior art keywords
- collar tie
- tie beam
- foundation pit
- monoblock type
- bracket
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000009412 basement excavation Methods 0.000 claims description 8
- 241000237858 Gastropoda Species 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- -1 I-steel Chemical compound 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Abstract
The present invention relates to the monoblock type foundation pit horizontal struts systems and its construction method of a kind of precast assembly, to form whole several collar tie beam components including joining end to end；The both ends of the collar tie beam component are respectively welded pin-joint piece, and the pin-joint piece of adjacent turn beam is fixed after needing mounted on top；The middle section of the collar tie beam component is respectively welded two towards different and angularly disposed bracket；The bracket is welded with bracket connecting plate backwards to the planar ends of collar tie beam component；Adjacent collar tie beam component is fixed after two brackets close to each other are connected by diagonal brace on adjacent turn beam.At the scene by several collar tie beam lifting components to foundation pit and to pass sequentially through articulated joint hinged, monoblock type foundation pit horizontal struts system is finally formed together with diagonal brace, can guarantee the quality and stabilization of horizontal struts system.
Description
Technical field
The present invention relates to the monoblock type foundation pit horizontal struts systems and its construction method of a kind of precast assembly, belong to building work
Journey technical field.
Background technique
Foundation pit supporting system generally comprises vertical support system and horizontal struts system two large divisions.Vertical support system is used
In the horizontal direction soil pressure for directly bearing surrounding bottom, the common form of vertical support system includes steel sheet pile, ground-connecting-wall, perfusion
Stake etc.；Horizontal struts system primarily serves the effect of bearing and anchoring to vertical support system, improves its stress, level branch
The common form of support body system includes concrete (or fashioned iron) collar tie beam, concrete (or fashioned iron) stull etc..
Compared to traditional horizontal struts system made of concrete material, by all kinds of fashioned iron (including I-steel, slot
Steel, square steel etc.) at the scene assembled horizontal struts system have many advantages, such as that speed of application is fast, steel recoverable, but
Also inevitably have that globality is poor, and especially collar tie beam corner can not effectively connect simultaneously, each point stress
The problems such as uneven, leads to the disadvantages of horizontal supports architecture is unstable, and on-site consolidation construction quality is uncontrollable.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of monoblock type foundation pit horizontal struts system of precast assembly and
Its construction method has the collar tie beam component of pin-joint piece and bracket by prefabricated band, is lifted at the scene in foundation pit and successively leading to
It is hinged to cross articulated joint, monoblock type foundation pit horizontal struts system is finally formed together with diagonal brace, can guarantee horizontal struts system
Quality and stabilization.
Technical scheme is as follows:
A kind of monoblock type foundation pit horizontal struts system of precast assembly to form whole several collar tie beam components including joining end to end；
The both ends of the collar tie beam component are respectively welded pin-joint piece, and the pin-joint piece of adjacent turn beam is fixed after needing mounted on top；It is described
The middle section of collar tie beam component is respectively welded two towards different and angularly disposed bracket；Plane of the bracket backwards to collar tie beam component
End is welded with bracket connecting plate；By adjacent collar tie beam structure after two brackets close to each other are connected by diagonal brace on adjacent turn beam
Part is fixed.
Further, four collar tie beam components join end to end to form the monoblock type collar tie beam structure of rectangle.
Further, the both ends of the collar tie beam component are arranged in parallel with the pin-joint piece that two panels has central axis bearing bore respectively；
Adjacent collar tie beam component is fixedly connected by articulated joint with pin-joint piece cooperation.
Further, the both ends that the diagonal brace is connect with bracket connecting plate have segmented head；The segmented head is backwards
One end of diagonal brace is welded with ring flange.
Further, two parallel pin-joint piece spacing of collar tie beam component one end setting are 60 ~ 80mm.
Further, the collar tie beam component and bracket are square steel；The pin-joint piece is fillet steel plate；The bracket connection
Plate is rectangular steel plates；The bolt hole that the bracket connecting plate four corners offer；The articulated joint is band cap hollow circular-tube.
A kind of construction method of the monoblock type foundation pit horizontal struts system of precast assembly, specifically comprises the following steps:
S1, the length and width dimensions according to excavation pit, prefabricated single collar tie beam component；
S2, the vertical support system for setting foundation pit, when excavation pit to the first depth, first successively lift four collar tie beam components
Behind the position determined in foundation pit, so that the pin-joint piece of adjacent collar tie beam component is overlapped, by the hinge of the insertion overlapping of articulated joint 3
It is locked after contact pin, successively four collar tie beam components join end to end and then forms the collar tie beam structure of monoblock type；
After S3, collar tie beam structure are fixed, the diagonal brace with segmented head is lifted to the position of bracket, precompression is applied to segmented head,
After coming into full contact with the ring flange of segmented head and bracket connecting plate, screws on flange plate bolt and fix diagonal brace and bracket；
S4, after the completion of diagonal brace is connect with bracket, precompression further is applied to segmented head, the is completed after so that diagonal brace is sufficiently pressurized
The construction of one of integral type level support system；
S5, foundation pit continue to be excavated to the second depth, complete applying for second integral type level support system referring to above-mentioned steps
Work, foundation pit continue to be excavated to third depth, and the construction of third road integral type level support system is completed referring to above-mentioned steps；According to
If this circulation completes the construction of arterial highway integral type level support system.
Further, first depth is to be excavated at 0.5m, and the second depth is to be excavated at 4.5m, and third depth is
It is excavated at 8.5m.
Further, the spacing distance between the neighbouring integral type level support system is 4m.
The invention has the following beneficial effects:
1, it is assembled in the present invention by prefabricated collar tie beam framework, the corner of adjacent collar tie beam component is using hinge after lifting
It connects, and then forms the collar tie beam structure of monoblock type, horizontal struts system is removably, to be readily transported and lift, in lifting to hole
Afterwards by collar tie beam structural member development, monoblock type foundation pit horizontal struts system, therefore, water of the invention are formed by bracket and diagonal brace together
Flat support system has the remarkable advantage of good integrity, stable structure and quick construction, while lifting and construction quality can obtain
Guarantee to effective.
2, the advantages of being based on good integrity, quick construction, therefore horizontal struts system of the invention is particularly suitable for vertical shaft
Equal excavation areas are smaller to work as the biggish foundation pit of cutting depth.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of single collar tie beam component in the present invention；
Fig. 2 is monoblock type foundation pit horizontal struts system structural schematic diagram of the present invention；
Fig. 3 is the schematic diagram that adjacent turn beam is hinged in the present invention；
Fig. 4 is bracket and diagonal brace connection schematic diagram in the present invention.
Appended drawing reference in figure are as follows:
1, collar tie beam component；11, pin-joint piece；12, bracket；13, bracket connecting plate；14, bolt hole；15, bearing hole；2, diagonal brace；3,
Articulated joint；4, segmented head；41, ring flange.
Specific embodiment
It is next in the following with reference to the drawings and specific embodiments that the present invention will be described in detail.
Referring to Fig. 1 to Fig. 4, a kind of monoblock type foundation pit horizontal struts system of precast assembly, including join end to end to be formed it is whole
Several collar tie beam components 1 of body；The both ends of the collar tie beam component 1 are respectively welded pin-joint piece 11, the pin-joint piece of adjacent turn beam 1
11 need fixation after mounted on top, and the pin-joint piece 11 of adjacent turn beam 1 is facilitated to be mutually inserted；The middle section of the collar tie beam component 1 point
It is not welded with two towards different and angularly disposed bracket 12；The bracket 12 is welded with ox backwards to the planar ends of collar tie beam component 1
Leg connecting plate 13；By adjacent collar tie beam component 1 after two brackets 12 close to each other are connected by diagonal brace 2 on adjacent turn beam 1
It is fixed.
Further, four collar tie beam components 1 join end to end to form the monoblock type collar tie beam structure of rectangle.
Further, the both ends of the collar tie beam component 1 are arranged in parallel with two panels with the hinged of central axis bearing bore 15 respectively
Piece 11；Adjacent collar tie beam component 1 is fixedly connected by articulated joint 3 with the cooperation of pin-joint piece 11.
Further, the both ends that the diagonal brace 2 is connect with bracket connecting plate 13 have segmented head 4；The segmented head 4
Ring flange 41 is welded with backwards to one end of diagonal brace 2.
Further, two parallel 11 spacing of pin-joint piece of 1 one end of collar tie beam component setting are 60 ~ 80mm.
Further, the collar tie beam component 1 and bracket 12 are square steel；The pin-joint piece 11 is fillet steel plate；The ox
Leg connecting plate 13 is rectangular steel plates；The bolt hole 14 that 13 four corners of bracket connecting plate offer；The articulated joint 3 is band cap
Hollow circular-tube.
Further, when the Internal periphery of excavation pit is having a size of 10m × 10m, when depth is 10m, prefabricated collar tie beam component 1
Size be section be 250mm × 250mm × 5mm, length 9.4m；The size of pin-joint piece 11 be 250mm × 300mm ×
10mm；The radius of bearing hole 15 on pin-joint piece 11 is 60mm；The size of bracket 12 is section 200mm × 200mm × 4mm；Ox
The size of leg connecting plate 13 is 250mm × 250mm × 5mm；The radius of bolt hole 14 of 13 four corners of bracket connecting plate setting is
8m；Articulated joint 3 is internal diameter 110mm, the band cap hollow circular-tube of wall thickness 5mm.
A kind of construction method of the monoblock type foundation pit horizontal struts system of precast assembly, specifically includes the following steps:
S1, the length and width dimensions according to excavation pit, prefabricated single collar tie beam component 1；
S2, the vertical support system that foundation pit is set using Larsen steel sheet pile SP-IV, when at excavation pit to depth 0.5m first
Four collar tie beam components 1 are successively lifted to position determining in foundation pit, so that the pin-joint piece 11 of adjacent collar tie beam component 1 is mutual
Overlapping will be locked after the pin-joint piece 11 of the insertion overlapping of articulated joint 3, successively four collar tie beam components 1 will join end to end and then shape
The collar tie beam structure of rectangular monoblock type；
After S3, collar tie beam structure are fixed, the diagonal brace 2 with segmented head 4 is lifted to the position of bracket 12, segmented head 4 is applied pre-
Pressure screws on flange plate bolt for diagonal brace 2 and bracket after coming into full contact with the ring flange 41 of segmented head 4 and bracket connecting plate 13
12 is fixed；
S4, after the completion of diagonal brace 2 is connect with bracket 12, further to segmented head 4 apply precompression, make diagonal brace 2 sufficiently be pressurized after
Complete the construction of first of integral type level support system；It is additionally provided with jack (not shown) inside the segmented head 4,
Pretightning force can be applied to integral type level support system by jack, to control the deformation for cheating outer stratum；
S5, foundation pit continue to be excavated at depth 4.5m, complete applying for second integral type level support system referring to above-mentioned steps
Work, foundation pit continue to be excavated at depth 8.5m, and the construction of third road integral type level support system is completed referring to above-mentioned steps；According to
If this circulation completes the construction of arterial highway integral type level support system and then forms monoblock type foundation pit horizontal struts system.
Further, the spacing distance between the neighbouring integral type level support system is 4m.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included in protection scope of the present invention.
Claims (9)
1. a kind of monoblock type foundation pit horizontal struts system of precast assembly, it is characterised in that: including join end to end to be formed it is whole
Several collar tie beam components (1)；The both ends of the collar tie beam component (1) are respectively welded pin-joint piece (11), the hinge of adjacent turn beam (1)
Contact pin (11) is fixed after needing mounted on top；It is different and angularly disposed that the middle section of the collar tie beam component (1) is respectively welded two directions
Bracket (12)；Planar ends of the bracket (12) backwards to collar tie beam component (1) are welded with bracket connecting plate (13)；Adjacent collar tie beam structure
It is after two brackets (12) close to each other are connected by diagonal brace (2) on part (1) that adjacent collar tie beam component (1) is fixed.
2. a kind of monoblock type foundation pit horizontal struts system of precast assembly as described in claim 1, it is characterised in that: four institutes
Collar tie beam component (1) is stated to join end to end to form the monoblock type collar tie beam structure of rectangle.
3. a kind of monoblock type foundation pit horizontal struts system of precast assembly as claimed in claim 2, it is characterised in that: the circle
The both ends of beam (1) are arranged in parallel with the pin-joint piece (11) that two panels has central axis bearing bore (15) respectively；Adjacent collar tie beam structure
Part (1) is fixedly connected by articulated joint (3) with pin-joint piece (11) cooperation.
4. a kind of monoblock type foundation pit horizontal struts system of precast assembly as claimed in claim 3, it is characterised in that: described oblique
The both ends that support (2) is connect with bracket connecting plate (13) have segmented head (4)；The segmented head (4) backwards to diagonal brace (2) one
End is welded with ring flange (41).
5. a kind of monoblock type foundation pit horizontal struts system of precast assembly as claimed in claim 4, it is characterised in that: the circle
Two parallel pin-joint piece (11) spacing of beam (1) one end setting are 60 ~ 80mm.
6. a kind of monoblock type foundation pit horizontal struts system of precast assembly as claimed in claim 5, it is characterised in that: the circle
Beam (1) and bracket (12) use square steel；The pin-joint piece (11) is made of fillet steel plate；The bracket connecting plate (13)
For rectangular steel plates；The bolt hole (14) that bracket connecting plate (13) four corners offer；The articulated joint (3) is that band cap is hollow
Round tube.
7. a kind of construction method of the monoblock type foundation pit horizontal struts system of precast assembly as claimed in claim 6, specific to wrap
Include following steps:
S1, the length and width dimensions according to excavation pit, prefabricated single collar tie beam component (1)；
S2, the vertical support system for setting foundation pit, when excavation pit to the first depth, first successively hang four collar tie beam components (1)
After being filled to the position determined in foundation pit, so that the pin-joint piece (11) of adjacent collar tie beam component (1) is overlapped, by articulated joint (3)
It is locked after being inserted into the pin-joint piece (11) of overlapping, successively four collar tie beam components (1) join end to end and then forms monoblock type
Collar tie beam structure；
After S3, collar tie beam structure are fixed, by the position of diagonal brace (2) lifting with segmented head (4) to bracket (12), to segmented head
(4) apply precompression, after coming into full contact with the ring flange (41) of segmented head (4) and bracket connecting plate (13), screw on flange valve snail
Bolt is fixed by diagonal brace (2) and bracket (12)；
S4, after the completion of diagonal brace (2) is connect with bracket (12), further to segmented head (4) apply precompression, fill diagonal brace (2)
Divide the construction that first of integral type level support system is completed after being pressurized；
When S5, foundation pit continue to be excavated to the second depth, applying for second integral type level support system is completed referring to above-mentioned steps
Work, foundation pit continue to be excavated to third depth, and the construction of third road integral type level support system is completed referring to above-mentioned steps；According to this
If circulation completes the construction of arterial highway integral type level support system.
8. a kind of construction method of the monoblock type foundation pit horizontal struts system of precast assembly as claimed in claim 7, feature
Be: first depth is to be excavated at 0.5m, and the second depth is to be excavated at 4.5m, and third depth is to be excavated to 8.5m
Place.
9. a kind of construction method of the monoblock type foundation pit horizontal struts system of precast assembly as claimed in claim 7, feature
Be: the spacing distance between the neighbouring integral type level support system is 4m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573013.2A CN109440783A (en) | 2018-12-21 | 2018-12-21 | A kind of the monoblock type foundation pit horizontal struts system and its construction method of precast assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573013.2A CN109440783A (en) | 2018-12-21 | 2018-12-21 | A kind of the monoblock type foundation pit horizontal struts system and its construction method of precast assembly |
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| Publication Number | Publication Date |
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| CN109440783A true CN109440783A (en) | 2019-03-08 |
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|---|---|---|---|
| CN201811573013.2A Pending CN109440783A (en) | 2018-12-21 | 2018-12-21 | A kind of the monoblock type foundation pit horizontal struts system and its construction method of precast assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663537A (en) * | 2020-06-24 | 2020-09-15 | 深圳市南华岩土工程有限公司 | Temporary supporting structure for foundation pit construction and construction method |
| CN112854236A (en) * | 2021-01-04 | 2021-05-28 | 盐城墨攻建筑工程有限公司 | Foundation pit construction prestressed profile steel support pile |
| CN114606951A (en) * | 2022-03-03 | 2022-06-10 | 北京大圣智造科技有限公司 | Intelligent assembly type inverted hanging structure in foundation pit and construction method thereof |
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| CN104975606A (en) * | 2015-06-29 | 2015-10-14 | 上海市基础工程集团有限公司 | Method for handling high-low strides at adjacent parts of reverse building foundation pit and adjacent foundation pit |
| CN108824452A (en) * | 2018-08-29 | 2018-11-16 | 广东工业大学 | A kind of foundation pit enclosure support system |
| CN209443471U (en) * | 2018-12-21 | 2019-09-27 | 福建建中建设科技有限责任公司 | A kind of monoblock type foundation pit horizontal struts system of precast assembly |
-
2018
- 2018-12-21 CN CN201811573013.2A patent/CN109440783A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696429A (en) * | 2013-12-03 | 2014-04-02 | 中铁十三局集团第三工程有限公司 | Concrete support and fish-belly sill combined supporting system of special-shaped foundation pit and construction method |
| CN104975606A (en) * | 2015-06-29 | 2015-10-14 | 上海市基础工程集团有限公司 | Method for handling high-low strides at adjacent parts of reverse building foundation pit and adjacent foundation pit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663537A (en) * | 2020-06-24 | 2020-09-15 | 深圳市南华岩土工程有限公司 | Temporary supporting structure for foundation pit construction and construction method |
| CN112854236A (en) * | 2021-01-04 | 2021-05-28 | 盐城墨攻建筑工程有限公司 | Foundation pit construction prestressed profile steel support pile |
| CN114606951A (en) * | 2022-03-03 | 2022-06-10 | 北京大圣智造科技有限公司 | Intelligent assembly type inverted hanging structure in foundation pit and construction method thereof |
| CN114606951B (en) * | 2022-03-03 | 2024-01-12 | 北京大圣智造科技有限公司 | Intelligent assembled inverted hanging structure in foundation pit and construction method thereof |
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Address after: 350015 Jinlan Building, 33 Zhaoqiang Road, Mawei District, Fuzhou City, Fujian Province, 2002 (Free Trade Test Zone) Applicant after: Fujian Jianzhong Construction Technology Co., Ltd. Address before: 350015 Jinlan Building, 33 Zhaoqiang Road, Mawei District, Fuzhou City, Fujian Province, 2002 (Free Trade Test Zone) Applicant before: Fujian Jianzhong construction Polytron Technologies Inc |
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