CN208517810U - A kind of temporary trestle bridge for deep big foundation pit excavation construction - Google Patents
A kind of temporary trestle bridge for deep big foundation pit excavation construction Download PDFInfo
- Publication number
- CN208517810U CN208517810U CN201821044043.XU CN201821044043U CN208517810U CN 208517810 U CN208517810 U CN 208517810U CN 201821044043 U CN201821044043 U CN 201821044043U CN 208517810 U CN208517810 U CN 208517810U
- Authority
- CN
- China
- Prior art keywords
- bridge
- lattice column
- foundation pit
- bridge floor
- trestle
- 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.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000009412 basement excavation Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 2
- 230000003319 supportive effect Effects 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 239000002689 soil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000010412 perfusion Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Foundations (AREA)
Abstract
The utility model discloses a kind of temporary trestle bridges for deep big foundation pit excavation construction comprising is set to the bridge floor of top surface, the ground-connecting-wall for being set to bridge floor left end lower part, the body of a bridge for being set to bridge floor right end lower part, the bridge pier being set to below the body of a bridge.The utility model structural stability with higher can reduce foundation pit and surrounding enviroment deformation, improve excavation of foundation pit efficiency, guarantee the safety of work progress.The erection of the utility model pattern foundation pit supporting structure and temporary road suitable for deep big foundation pit digging process.
Description
Technical field
The utility model relates to deep excavation project technical fields, and in particular to a kind of for deep big foundation pit excavation construction
Temporary trestle bridge.
Background technique
In recent years, as base pit engineering constantly develops to depth, general orientation, the environmental condition on periphery also becomes increasingly complex, such as
Where retaining structure in deep foundation pit, in work progress, under the requirement for sufficiently meeting supporting construction and outside environment safety, guarantee
It also ensures that the balanced of the soil body excavates while earthwork outward transport in time, reaches the excavation for not only improving the earthwork and transport, and increase branch
The rigidity of protection structure and support system reduces the deformation of foundation pit, is the main problem that deep foundation pit construction faces.Deep big foundation pit is being opened
When digging, cutting depth is big, and area is wide, and earthwork transportation amount is big, and construction stage time span is big, and exposure is also easy to produce deformation to foundation pit for a long time
Etc. factors bring many security risks to the earth excavation of deep big foundation pit, supporting and later period engineering construction, therefore there is an urgent need to
A kind of continuous earthwork of energy, and support system is formed within the shortest time after soil body exposure, reduce foundation pit and surrounding enviroment
The gib protective device for deep big foundation pit construction of deformation.
Utility model content
Since construction time span is big when the utility model provides a kind of construction of solution deep big foundation pit, foundation pit for a long time hold by exposure
Easily there is the gib protective device of security risk.
To achieve the above object, technical solution used by the utility model is as follows:
A kind of temporary trestle bridge for deep big foundation pit excavation construction, key technology are: it includes being set to top surface
The bridge floor concordant with ground, the body of a bridge for being set to bridge floor right end lower part, is set to bridge at the ground-connecting-wall for being set to bridge floor left end lower part
Bridge pier below body.
The bridge floor is trestle top structure, including being set to the bridge floor backing plate of top surface, being set to below bridge floor backing plate
Bridge floor main body, the left crossbeam to play a supportive role and the right crossbeam being set to below bridge floor main body.
The body of a bridge be trestle supporting construction, including as vertical supporting column left lattice column, right lattice column, be set to
The supporting beam for the horizontal support effect that layering is arranged between left lattice column and ground-connecting-wall is set to left lattice column and right lattice column
Between layering setting rise horizontal support effect connection beam.
The bridge pier is trestle bottom structure, including being set to the left bored concrete pile of left lattice column lower part and being set to right lattice
The right bored concrete pile of column lower part.
As restriction, the bridge floor backing plate is 20 millimeters~25 millimeters thick steel plates, and the bridge floor main body is by ェ 20B I-steel
Full paving composition, the left crossbeam and right crossbeam are respectively two ェ 45B steel purlin crossbeams.
It is limited as another kind, the left lattice column and right lattice column are steel lattice column, and sectional dimension is 450 millimeters
X450 millimeters~500 millimeters x500 millimeters.
It is limited as another kind, embedded bar is in ground-connecting-wall on the left of the supporting beam, and reinforcing bar is taken on the right side of the supporting beam
It is connected on left lattice column；The connection beam steel is erected between left lattice column and right lattice column and with supporting beam in same level
Position, the supporting beam and connection beam pour simultaneously.
It is limited as another kind, the left bored concrete pile and right bored concrete pile are all made of the concrete drill hole perfusion of technical maturity
Stake, stake diameter is having a size of 900 millimeters of 800 millimeters~φ of φ.
As further limiting, trestle Each part component can require to be adjusted according to actual engineering design, trestle
Each section construction should follow every corresponding demand of technical standard including welding engineering, reinforced bar engineering, concreting engineering.
The utility model is due to using above-mentioned structure, and compared with prior art, acquired technological progress is:
(1) the utility model body of a bridge column is made of steel construction with bridge floor and is connected with welding manner and both met rigidity and want
It asks, opposite casting concrete can save the duration again；
(2) body of a bridge of the steel lattice column composition of the utility model and beams of concrete form overlap joint system, can bear to erect simultaneously
To load and lateral foundation pit soil pressure, engineering use and safe design requirement ensure that the greatest extent.
(3) the continual continuous earthwork of supporting trestle energy described in the utility model, and it is most short after soil body exposure
Support system is formed in time, reduces foundation pit and surrounding enviroment deformation, it can Optimizing construction sequence, time with higher and economy
Benefit.
To sum up, the utility model structural stability with higher can reduce foundation pit and surrounding enviroment deformation, improve foundation pit
Efficiency is excavated, guarantees the safety of work progress, the erection of pattern foundation pit supporting structure and temporary road suitable for deep big foundation pit digging process.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
In the accompanying drawings:
Fig. 1 is the overall structure diagram of the trestle of the utility model embodiment；
Fig. 2 is the bridge deck structure schematic diagram of the trestle of the utility model embodiment；
Fig. 3 is the body of a bridge structural schematic diagram of the trestle of the utility model embodiment；
Fig. 4 is the earthwork stage excavation schematic diagram (for four layers) of the utility model embodiment.
Mark component: 1- bridge floor, the 2- body of a bridge, 3- bridge pier, 4- ground-connecting-wall, 5- lead wall, 6- ground level；
101- bridge floor backing plate, 102- bridge floor main body, the left crossbeam of 103-, the right crossbeam of 104-；
The left lattice column of 201-, the right lattice column of 202-, 203- supporting beam, 204- connection beam；
The left bored concrete pile of 301-, the right bored concrete pile of 302-；
I indicates to excavate the first step, and II indicates to excavate second step, and III indicates to excavate third step, and IV indicates to excavate the 4th step；
1. being first of support bottom, bottom 2. is supported for second, 3. bottom is supported for third road, is 4. foundation pit bottom.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model.It should be appreciated that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
A kind of temporary trestle bridge for deep big foundation pit excavation construction of embodiment
Referring to Fig.1, the utility model is as follows for the manufacturing process of the structure of the temporary trestle bridge of deep big foundation pit excavation construction.
Bridge floor 1: bridge floor backing plate 101 and bridge floor main body 102 collectively form floorings, the floorings directly with left crossbeam 103
It is connected with right crossbeam 104, left crossbeam 103 is erected on foundation pit ground-connecting-wall 4, and right crossbeam 104 is set up in lower right lattice column 202
On, and reinforcement measure is taken according to site requirement in respective action position；
The body of a bridge 2: trestle vertical supporting is made of left lattice column 201, right lattice column 202 and foundation pit ground-connecting-wall 4, is connected to foundation pit
Layering level sets up lower support beam 203 as pattern foundation pit supporting structure, supporting beam 203 and left lattice column between wall 4 and left lattice column 201
201 are effectively overlapped, and same level lattice intercolumniation is with the connection of concrete connection beam 204, to solve to increase with cutting depth
Bring trestle lateral bucking problem；
Bridge pier 3: the left bored concrete pile 301 of bottom of foundation ditch and right perfusion are inserted in left lattice column 201 and 202 bottom end of right lattice column respectively
In the steel reinforcement cage of stake 302, concreting is then carried out.
Illustrate manufacturing process and use process of the invention below by specific embodiment.
Referring to Fig. 2,1 part of bridge floor is steelwork component, is connected using welding form, bridge floor backing plate in the present embodiment
101 are completely spread by ェ 20B I-steel and are formed using 20 millimeters of thick steel plate production, bridge floor main body 102, left crossbeam 103 and right crossbeam 104
Respectively two ェ 45B I-steel purlin crossbeams, construction site guarantee entire according to field engineering condition adjustment welding manner
The stability of trestle support system.
Referring to Fig. 3, the body of a bridge 2 is the main supporting construction of trestle comprising the left lattice as vertical supporting column
Column 201, right lattice column 202, the branch for playing horizontal support effect for being set to layering setting between left lattice column 201 and ground-connecting-wall 4
Support beam 203, the connection beam for playing horizontal support effect for being set to layering setting between left lattice column 201 and right lattice column 202
204, the left lattice column 201 and right lattice column 202 are steel lattice column, left lattice column 201 and right lattice column in the present embodiment
202 sectional dimension is 450 millimeters x450 millimeters, the 203 left side embedded bar of supporting beam of described horizontal support effect in
In ground-connecting-wall 4, with bar splicing on left lattice column 201 on the right side of the supporting beam 203, supporting beam 203 and left lattice column 201
Position of action point level sets up the reinforcing bar of connection beam 204, and 204 reinforcing bar of linking beam and 203 reinforcing bar of supporting beam is made to be in same level
Then position pours supporting beam 203 and connection beam 204 simultaneously, to reach good overall performance.
201 lower part of left lattice column is provided with left bored concrete pile 301, and right 202 lower part of lattice column is provided with right perfusion
Stake 302, left bored concrete pile 301 and right bored concrete pile 302 described in the present embodiment are all made of the concrete drilling bored concrete pile of technical maturity,
Stake diameter is having a size of 800 millimeters of φ, it is contemplated that the center point, verticality when cast-in-situ bored pile and the steel lattice column of interpolation are constructed are inclined
The presence of difference, it is contemplated that steel column using the outer packet node way in part, using the external inclined steel lattice column node of " ︺ " shape reinforcing bar
It is bound and is reinforced.
Referring to attached drawing 4, after deep basal pit temporary trestle bridge is set up, earth excavation mode are as follows: be first depending on foundation pit construction and want
Ask and ambient environmental conditions formulate excavation of foundation pit layering, subregion and segmentation scheme, determine trestle position and excavation sequence, utilization
Tau-effect sets up the form of construction work that digging is moved back with island in conjunction with trestle, uninterrupted continuous excavation operation, after soil body exposure most
Support system is established in short time.Layer-by-layer process is specifically excavated after the completion of conceptual design, in every section can be expressed as (be with four layers
Example): the topsoil of foundation pit is removed first, after applying crown beam and first of support, continues to apply after excavating to the second layer soil body downwards
Add second to support, successively carries out three, four layer soil bodies later and excavate and its support to hole bottom, digging process is chosen according to situation to be grown
Arm excavator cooperates step relay to cut the earth, and base pit dewatering and foundation pit data monitoring is carried out when digging, to adjust excavation in real time
Scheme takes artificial clear slot after being excavated to away from substrate absolute altitude 30cm, carries out foundation pit back cover after the completion of excavating.It is excavated in every area
Periphery is first dug, then digs centre, is fulcrum frame using central island using center as fulcrum earth excavation around to form central island
If supporting construction, central island is excavated using platform is moved back.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of the utility model claims protection.
Claims (5)
1. a kind of temporary trestle bridge for deep big foundation pit excavation construction, it is characterised in that: it include be set to top surface and ground
Concordant bridge floor (1), the ground-connecting-wall (4) for being set to bridge floor (1) left end lower part, the body of a bridge for being set to bridge floor (1) right end lower part
(2), it is set to the bridge pier (3) of the body of a bridge (2) below；
The bridge floor (1) is trestle top structure, including being set to the bridge floor backing plate (101) of top surface, being set to bridge floor backing plate
(101) below bridge floor main body (102) is set to the following left crossbeam (103) to play a supportive role of bridge floor main body (102) and the right side
Crossbeam (104),
The body of a bridge (2) is trestle supporting construction, including left lattice column (201), the right lattice column as vertical supporting column
(202), it is set to the supporting beam for playing horizontal support effect of layering setting between left lattice column (201) and ground-connecting-wall (4)
(203), it is set to the connection beam for playing horizontal support effect of layering setting between left lattice column (201) and right lattice column (202)
(204)；
The bridge pier (3) is trestle bottom structure, including being set to the left bored concrete pile (301) of left lattice column (201) lower part and setting
It is placed in the right bored concrete pile (302) of right lattice column (202) lower part.
2. a kind of temporary trestle bridge for deep big foundation pit excavation construction according to claim 1, it is characterised in that: the bridge
Face backing plate (101) is 20 millimeters~25 millimeters thick steel plates, and the bridge floor main body (102) is completely spread by ェ 20B I-steel to be formed, described
Left crossbeam (103) and right crossbeam (104) are respectively two ェ 45B steel purlin crossbeams.
3. a kind of temporary trestle bridge for deep big foundation pit excavation construction according to claim 1, it is characterised in that: the left side
Lattice column (201) and right lattice column (202) are steel lattice column, and sectional dimension is 450 millimeters x450 millimeters~500 millimeters
X500 millimeters.
4. a kind of temporary trestle bridge for deep big foundation pit excavation construction according to claim 1, it is characterised in that: the branch
It is interior in ground-connecting-wall (4) to support embedded bar on the left of beam (203), supporting beam (203) the right side bar splicing is in left lattice column (201)
On；Connection beam (204) reinforcing bar is erected between left lattice column (201) and right lattice column (202) and exists with supporting beam (203)
The same horizontal position, the supporting beam (203) and connection beam (204) pour simultaneously.
5. a kind of temporary trestle bridge for deep big foundation pit excavation construction according to claim 1, it is characterised in that: the left side
Bored concrete pile (301) and right bored concrete pile (302) are all made of the concrete drilling bored concrete pile of technical maturity, and stake diameter is having a size of 800 milli of φ
900 millimeters of rice~φ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821044043.XU CN208517810U (en) | 2018-07-03 | 2018-07-03 | A kind of temporary trestle bridge for deep big foundation pit excavation construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821044043.XU CN208517810U (en) | 2018-07-03 | 2018-07-03 | A kind of temporary trestle bridge for deep big foundation pit excavation construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208517810U true CN208517810U (en) | 2019-02-19 |
Family
ID=65338187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821044043.XU Expired - Fee Related CN208517810U (en) | 2018-07-03 | 2018-07-03 | A kind of temporary trestle bridge for deep big foundation pit excavation construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208517810U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820530A (en) * | 2019-10-18 | 2020-02-21 | 北京市第三建筑工程有限公司 | Concrete trestle and foundation pit connecting node structure and construction method thereof |
| CN110847188A (en) * | 2019-12-20 | 2020-02-28 | 中建一局集团建设发展有限公司 | Ultra-deep foundation pit earth excavation platform structure and construction method thereof |
| CN111062108A (en) * | 2019-06-28 | 2020-04-24 | 中国水电顾问集团贵阳勘测设计研究院岩土工程有限公司 | Method for correcting and adding suggested substrate elevation in batches by using excel |
-
2018
- 2018-07-03 CN CN201821044043.XU patent/CN208517810U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111062108A (en) * | 2019-06-28 | 2020-04-24 | 中国水电顾问集团贵阳勘测设计研究院岩土工程有限公司 | Method for correcting and adding suggested substrate elevation in batches by using excel |
| CN110820530A (en) * | 2019-10-18 | 2020-02-21 | 北京市第三建筑工程有限公司 | Concrete trestle and foundation pit connecting node structure and construction method thereof |
| CN110847188A (en) * | 2019-12-20 | 2020-02-28 | 中建一局集团建设发展有限公司 | Ultra-deep foundation pit earth excavation platform structure and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105386408B (en) | Deep-water bridge pile foundation construction method | |
| CN204491626U (en) | The foundation pit enclosure structure that Larsen steel sheet pile and prestressed anchor combine | |
| CN102828520A (en) | Ring-shaped inner supporting structure used in deep peat soil deep foundation pit | |
| CN208517810U (en) | A kind of temporary trestle bridge for deep big foundation pit excavation construction | |
| CN102966108A (en) | Construction method of deep foundation pit close to building and adopting underground structure as internal support | |
| CN111236040A (en) | D-shaped temporary beam erecting method for underneath passing through railway frame bridge type tunnel | |
| CN101736757A (en) | Two-way synchronous construction method of tube structure of high-rise building | |
| CN103290847A (en) | Inner oblique beam supporting structure for oversized-area deep foundation pit and construction method | |
| CN102410031B (en) | Underground space structure constructed by pile wall construction method | |
| CN104264683B (en) | Building concave shape ultra-deep foundation pit subregion supporting method is protected for three around literary composition | |
| CN106088120B (en) | A kind of cofferdam decentralization construction method | |
| CN106245927A (en) | A kind of frame structure building underground that is applicable to increases method and the building of layer | |
| CN111779025A (en) | In-situ protection structure crossing foundation pit municipal pipe network box culvert and construction method | |
| CN110878562B (en) | Method for in-situ excavation of foundation pit and new addition of underground structure under existing reserved building | |
| CN108842820A (en) | A kind of subway station transfer node section foundation ditch construction method | |
| CN209179021U (en) | Foundation pit row pile supporting system | |
| CN101509258B (en) | Method for precontrolling subsidence slant of sinking well | |
| CN105113514A (en) | Foundation pit enclosure system using underground diaphragm wall as vertical cantilever supporting point and construction method | |
| CN104594371A (en) | Reinforcing structure of existing foundation bottom plate and construction method thereof | |
| CN113235613B (en) | Method for excavating and supporting newly-built foundation pit by utilizing adjacent existing guard piles | |
| CN202969333U (en) | Steel truss rock-socketed wharf structure | |
| CN105064373B (en) | Foundation pit supporting structure of bridge main pier bearing platform on river channel steep slope bedrock and construction method thereof | |
| CN207728018U (en) | The building structure of skyscraper is built suitable for tier building set | |
| CN205742125U (en) | A kind of work platform for boring | |
| CN108571010A (en) | A kind of cut and cover method engineering prefabricated bodies structure and the integrated method of supporting construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 |