CN104480944A - Unearthed ramp structure and construction method thereof - Google Patents
Unearthed ramp structure and construction method thereof Download PDFInfo
- Publication number
- CN104480944A CN104480944A CN201410694862.9A CN201410694862A CN104480944A CN 104480944 A CN104480944 A CN 104480944A CN 201410694862 A CN201410694862 A CN 201410694862A CN 104480944 A CN104480944 A CN 104480944A
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- unearthed
- ramp
- brace summer
- brace
- steel pipe
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims description 5
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000009412 basement excavation Methods 0.000 description 11
- 239000002689 soil Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001556 precipitation Methods 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention provides a unearthed ramp structure and a construction method thereof, wherein the unearthed ramp structure comprises the following components: the foundation pit, one end connect in there is slope soil-out ramp and one end of foundation pit export connect in there is not slope soil-out ramp of slope soil-out ramp, there is not slope soil-out ramp other end to connect in the haul road, there is not slope soil-out ramp outside to be provided with three supporting beam that is used for the foundation pit to strut, two lateral walls symmetry subsides of soil-out ramp are equipped with steel sheet pile and a plurality of steel pipe and embrace the roof beam, a plurality of steel pipe embrace roof beam one end and are fixed in supporting beam, the other end support hold in the steel sheet pile. According to the invention, by adopting the slope arrangement in a slope-free mode, the influence of the slope range at two sides of the slope on the construction of the supporting beam is reduced, the alternate construction of the supporting beam and the slope is avoided, the construction continuity is ensured, the construction speed is accelerated, and the risk caused by long-term exposure of the foundation pit is also reduced.
Description
Technical field
The present invention relates to the technical field of pit earthwork construction, particularly one is unearthed pits rampway structure and construction method thereof.
Background technology
In foundation pit construction process, for the safety and surrounding environment ensureing foundation pit construction, main body underground structure is without prejudice, usually need to take supporting and protection structure, precipitation and soil excavation and backfill, comprise prospecting, design, construction, monitoring and detection etc.The construction technology of pit earthwork excavation generally has two kinds: put slope excavation (non-support excavation) and excavation (having supporting excavation) under support system protection; And for the latter, along with the excavation of foundation ditch is more and more darker, area is increasing, design and the construction of foundation pit enclosure structure become increasingly complex.
At the deep foundation ditch adopting brace summer to go along with sb. to guard him in soil excavation process, along with the increase of cutting depth, be unearthed both sides, ramp to put slope increasing extent large, on the one hand, put slope scope can be formed with the main bearing member of brace summer and intersect, the part angle brace of be unearthed on the other hand ramp and brace summer exists superimposed, therefore, how to ensure not do at angle brace to continue to use ramp to be unearthed and reduce to put slope scope, reduce ramp and put the heavy difficult point that slope is soil excavation on the impact that brace summer is constructed.
Summary of the invention
The object of the invention is to propose a kind of pits rampway structure and construction method thereof of being unearthed, ramp two can be reduced and be sidelong the impact that slope scope construct on brace summer, avoid the interspersed construction in brace summer and ramp, ensure the continuity of constructing.
For achieving the above object, the present invention proposes a kind of pits rampway structure that is unearthed, comprise: foundation ditch, one end be connected to the outlet of described foundation ditch have side slope be unearthed ramp and one end be connected to described in have side slope to be unearthed being unearthed ramp without side slope of ramp, describedly be connected to transport routes without the side slope ramp other end that is unearthed, described have three brace summers for pattern foundation pit supporting structure without side slope ramp arranged outside of being unearthed, beam embraced by be sticked steel sheet pile and multiple steel pipe of the two lateral wall symmetries in described unearthed ramp, described brace summer is fixed in described multiple steel pipe Bao Liang one end, the other end is held in described steel sheet pile.
Further, in above-mentioned unearthed pits rampway structure, described three brace summers comprise the first brace summer, the second brace summer and the 3rd brace summer that set gradually, and described second brace summer and the 3rd brace summer are fixed in described multiple steel pipe Bao Liang one end, and the other end is held in described steel sheet pile.
Further, in above-mentioned unearthed pits rampway structure, the local distribution of described first brace summer, the second brace summer and the 3rd brace summer is in the both sides in ramp of being unearthed without side slope.
Further, in above-mentioned unearthed pits rampway structure, steel pipe described in each is embraced beam and is comprised the multiple horizontal steel pipe and multiple longitudinal steel pipe that are fixed on the second brace summer or the 3rd brace summer, one end of described multiple horizontal steel pipe is vertically fixed on described multiple longitudinal steel pipe, with the second brace summer or the 3rd brace summer of being fixedly clamped; The other end of described multiple horizontal steel pipe is held in described steel sheet pile.
Separately, the present invention also provides a kind of construction method of above-mentioned unearthed pits rampway structure, comprises the following steps:
Step S1: the two lateral wall symmetries in ramp of being unearthed without side slope are sticked steel sheet pile, and described brace summer is fixed in multiple steel pipe Bao Liang one end, and the other end is held in described steel sheet pile;
Step S2: detect the angle brace axle power that there is the position that overlaps in described brace summer and unearthed ramp, when described angle brace axle power be less than ramp banket lateral pressure when, the angle brace of the brace summer at coincidence position is not constructed;
Step S3: when the large face earthwork outward transport of foundation ditch is complete, excavates unearthed ramp and the construction of angle brace of intersection brace summer.
The present invention is arranged by taking the ramp without side slope mode, decrease ramp two and be sidelong the impact that slope scope constructs on brace summer, avoid the interspersed construction in brace summer and ramp, ensure that the continuity of construction, accelerate speed of application, also reduce the risk that foundation ditch long term exposure produces.
Accompanying drawing explanation
Fig. 1 is that the present invention is unearthed the overall schematic of pits rampway structure;
Fig. 2 is that the present invention is unearthed the generalized section of pits rampway structure;
Fig. 3 is that the present invention is unearthed the schematic flow sheet of pits rampway structure construction method.
Detailed description of the invention
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.
Refer to Fig. 1 and Fig. 2, Fig. 2 is that the present invention is unearthed the generalized section of pits rampway structure.The present invention is unearthed that pits rampway structure comprises foundation ditch 100, one end is connected to the outlet of described foundation ditch 100 have side slope be unearthed ramp 1 and one end be connected to described in have side slope to be unearthed being unearthed ramp 2 without side slope of ramp 1, describedly be connected to transport routes 200 without side slope ramp 2 other end that is unearthed, described have three brace summers 3 for pattern foundation pit supporting structure without side slope ramp 2 arranged outside of being unearthed, beam 5 embraced by be sticked steel sheet pile 4 and multiple steel pipe of the two lateral wall symmetries in described unearthed ramp 1, described multiple steel pipe is embraced beam 5 one end and is fixed on described brace summer 3, and the other end is held in described steel sheet pile 4.Described brace summer 3 is as the vertical supporting in ramp 2 of being unearthed without side slope, and described steel sheet pile 4 is as the cross binding in ramp 2 of being unearthed without side slope.
Wherein, described three brace summers 3 comprise the first brace summer 32, second brace summer 34 and the 3rd brace summer 36 that set gradually, and described multiple steel pipe is embraced beam 5 one end and is fixed on described second brace summer 34 and the 3rd brace summer 36, and the other end is held in described steel sheet pile 4.
The local distribution of described first brace summer 32, second brace summer 34 and the 3rd brace summer 36 is in the both sides in ramp 2 of being unearthed without side slope, and all do not construct with the angle brace of three brace summers 3 of ramp 2 overlapping part that is unearthed without side slope, it is the impact of second and third road brace summer being constructed in order to avoid there being side slope ramp to put slope scope without one of object that side slope ramp is arranged, two of object is that the angle brace of unearthed ramp and three brace summers 3 has lap, in order to avoid crossed construction, take the method that angle brace does not temporarily do.When pits rampway structure design is unearthed in the present invention, need to carry out comparing calculation to the angle brace axle power of described unearthed ramp 1 supported on both sides beam 3 and ramp lateral pressure of banketing, when ramp banket lateral pressure be less than the angle brace axle power of described brace summer 3 time, consider that angle brace does not temporarily do under ramp; Like this, on the one hand, the mode adopting the straight wall of steel sheet pile to go along with sb. to guard him makes the smooth construction of the second brace summer 34 and the 3rd brace summer 36, and form cross binding thereon, with opposing because angle brace does not form closed lateral force, ensure the stability of brace summer, thus reduce ramp to the impact of main brace summer; On the other hand, also ensure integrality and the continuity of brace summer construction, avoid back cutting fill slope road three times.
Steel pipe described in each is embraced beam 5 and is comprised the multiple horizontal steel pipe 52 and multiple longitudinal steel pipe 54 that are fixed on the second brace summer 34 or the 3rd brace summer 36, one end of described multiple horizontal steel pipe 52 is vertically fixed on described multiple longitudinal steel pipe 54, and to be fixedly clamped, multiple horizontal steel pipe 52 and multiple longitudinal steel pipe 54 described in the second brace summer 34 or the 3rd brace summer 36(are fixed by fastener); The other end of described multiple horizontal steel pipe 52 is held in described steel sheet pile 4, to shore the second brace summer 34 of steel sheet pile 4 and both sides or the 3rd brace summer 36, play the effect in fixing ramp of being unearthed, thus be down to minimum by slope scope being sidelong in ramp two without side slope mode on the impact that brace summer is constructed.
The present invention is unearthed in pits rampway structure, after needing to wait until the large face earthwork outward transport treating foundation ditch 100, carry out the excavation of the ramp soil body and the construction of intersection three brace summers 3 again, to be unearthed ramp 2 without side slope by adopting, the impact of being sidelong slope scope to avoid ramp two and constructing on brace summer, ensures the continuity of construction.
See also Fig. 1 to Fig. 3, Fig. 3 is the schematic flow sheet of the construction method of above-mentioned unearthed pits rampway structure, said method comprising the steps of:
Step S1: the two lateral wall symmetries in ramp 2 of being unearthed without side slope are sticked steel sheet pile 4, and multiple steel pipe is embraced beam 4 one end and be fixed on described brace summer 3, the other end is held in described steel sheet pile 4;
Step S2: detect the angle brace axle power that there is the position that overlaps in described brace summer and unearthed ramp 1, when described angle brace axle power be less than ramp banket lateral pressure when, the angle brace of the brace summer 3 at coincidence position is not constructed;
Step S3: when the large face earthwork outward transport of foundation ditch 100 is complete, excavates unearthed ramp 1 and the construction of angle brace of intersection brace summer 3.
It should be noted that, when brace summer 3 carries out operation, need on brace summer 3 earthing 300mm.
In addition, in work progress, need to strengthen the stress monitoring to respective regions brace summer, when angle brace of only filling a vacancy reaches design strength, lower road soil excavation can be carried out; Carry out brace summer angle brace when filling a vacancy, under the angle brace that should ensure to fill a vacancy, the earthwork is not excavated, to ensure the counter-pressure of the soil body to space enclosing structure.
Compared to prior art, the present invention is arranged by taking the ramp without side slope mode, decrease ramp two and be sidelong the impact that slope scope constructs on brace summer, avoid the interspersed construction in brace summer and ramp, ensure that the continuity of construction, accelerate speed of application, also reduce the risk that foundation ditch long term exposure produces.
Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments.Distortion and the change of embodiment disclosed are here possible, are known for the replacement of embodiment those those of ordinary skill in the art and the various parts of equivalence.Those skilled in the art are noted that when not departing from spirit of the present invention or substantive characteristics, the present invention can in other forms, structure, layout, ratio, and to realize with other assembly, material and parts.When not departing from the scope of the invention and spirit, can other distortion be carried out here to disclosed embodiment and change.
Claims (5)
1. a unearthed pits rampway structure, it is characterized in that, it comprises: foundation ditch, one end be connected to the outlet of described foundation ditch have side slope be unearthed ramp and one end be connected to described in have side slope to be unearthed being unearthed ramp without side slope of ramp, describedly be connected to transport routes without the side slope ramp other end that is unearthed, described have three brace summers for pattern foundation pit supporting structure without side slope ramp arranged outside of being unearthed, beam embraced by be sticked steel sheet pile and multiple steel pipe of the two lateral wall symmetries in described unearthed ramp, described brace summer is fixed in described multiple steel pipe Bao Liang one end, and the other end is held in described steel sheet pile.
2. unearthed pits rampway structure according to claim 1, it is characterized in that, described three brace summers comprise the first brace summer, the second brace summer and the 3rd brace summer that set gradually, described second brace summer and the 3rd brace summer are fixed in described multiple steel pipe Bao Liang one end, and the other end is held in described steel sheet pile.
3. unearthed pits rampway structure according to claim 2, is characterized in that, the local distribution of described first brace summer, the second brace summer and the 3rd brace summer is in the both sides in ramp of being unearthed without side slope.
4. unearthed pits rampway structure according to claim 2, it is characterized in that, steel pipe described in each is embraced beam and is comprised the multiple horizontal steel pipe and multiple longitudinal steel pipe that are fixed on the second brace summer or the 3rd brace summer, one end of described multiple horizontal steel pipe is vertically fixed on described multiple longitudinal steel pipe, with the second brace summer or the 3rd brace summer of being fixedly clamped; The other end of described multiple horizontal steel pipe is held in described steel sheet pile.
5. a construction method for the unearthed pits rampway structure as described in any one of claim 1-4, is characterized in that, said method comprising the steps of:
Step S1: the two lateral wall symmetries in ramp of being unearthed without side slope are sticked steel sheet pile, and described brace summer is fixed in multiple steel pipe Bao Liang one end, and the other end is held in described steel sheet pile;
Step S2: detect the angle brace axle power that there is the position that overlaps in described brace summer and unearthed ramp, when described angle brace axle power be less than ramp banket lateral pressure when, the angle brace of the brace summer at coincidence position is not constructed;
Step S3: when the large face earthwork outward transport of foundation ditch is complete, excavates unearthed ramp and the construction of angle brace of intersection brace summer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694862.9A CN104480944B (en) | 2014-11-27 | 2014-11-27 | Unearthed ramp structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694862.9A CN104480944B (en) | 2014-11-27 | 2014-11-27 | Unearthed ramp structure and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104480944A true CN104480944A (en) | 2015-04-01 |
| CN104480944B CN104480944B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410694862.9A Expired - Fee Related CN104480944B (en) | 2014-11-27 | 2014-11-27 | Unearthed ramp structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104480944B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298147A (en) * | 2015-10-13 | 2016-02-03 | 中建一局集团建设发展有限公司 | Ultra-deep foundation pit spiral descending quick material transportation passage and construction method thereof |
| CN110872841A (en) * | 2019-11-29 | 2020-03-10 | 深圳宏业基岩土科技股份有限公司 | Construction method of earthwork transportation ramp for inner support foundation pit |
| CN111851509A (en) * | 2020-07-22 | 2020-10-30 | 深圳市工勘岩土集团有限公司 | Temporary channel construction method based on deep foundation pit inner support structure |
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| EP0655099B1 (en) * | 1993-06-10 | 1998-03-25 | Ballast-Nedam Beton- en Waterbouw B.V. | Method for building a structure in the ground |
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| EP0655099B1 (en) * | 1993-06-10 | 1998-03-25 | Ballast-Nedam Beton- en Waterbouw B.V. | Method for building a structure in the ground |
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Non-Patent Citations (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298147A (en) * | 2015-10-13 | 2016-02-03 | 中建一局集团建设发展有限公司 | Ultra-deep foundation pit spiral descending quick material transportation passage and construction method thereof |
| CN110872841A (en) * | 2019-11-29 | 2020-03-10 | 深圳宏业基岩土科技股份有限公司 | Construction method of earthwork transportation ramp for inner support foundation pit |
| CN111851509A (en) * | 2020-07-22 | 2020-10-30 | 深圳市工勘岩土集团有限公司 | Temporary channel construction method based on deep foundation pit inner support structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104480944B (en) | 2016-04-06 |
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Effective date of registration: 20170612 Address after: 100024 Beijing City No. 1 North Chaoyang District Dingfuzhuang Luban building Co-patentee after: CHINA CONSTRUCTION FIRST Group Corp.,Ltd. Patentee after: CHINA CONSTRUCTION FIRST GROUP THE FIFTH CONSTRUCTION Co.,Ltd. Co-patentee after: THE FIRST CONSTRUCTION CO., LTD. OF CHINA CONSTRUCTION FIRST Group Address before: 100024 Beijing City No. 1 North Chaoyang District Dingfuzhuang Luban building Co-patentee before: CHINA CONSTRUCTION FIRST Group Corp.,Ltd. Patentee before: CHINA CONSTRUCTION FIRST GROUP THE FIFTH CONSTRUCTION Co.,Ltd. |
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Granted publication date: 20160406 Termination date: 20191127 |