CN210459300U - Enclosure structure for covering and digging station - Google Patents
Enclosure structure for covering and digging station Download PDFInfo
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- CN210459300U CN210459300U CN201920778900.7U CN201920778900U CN210459300U CN 210459300 U CN210459300 U CN 210459300U CN 201920778900 U CN201920778900 U CN 201920778900U CN 210459300 U CN210459300 U CN 210459300U
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Abstract
The utility model discloses a retaining structure who digs station is covered, including setting up at the deep basal pit enclosure wall that covers and dig station ground even wall grooving, setting on the deep basal pit enclosure wall and thickness is less than the shallow foundation pit barricade of roof of deep basal pit enclosure wall, the upper surface of deep basal pit enclosure wall flushes with the bottom surface of the shallow foundation pit of roof to deep basal pit enclosure wall crown beam and center pillar regard as the structure that supports the station roof, and excavate station roof below space. The utility model has the advantages that: the combined enclosure structure construction of the station deep foundation pit and the roof shallow foundation pit can be realized by the combined reinforcement cage, the operation process and the working procedure of foundation pit engineering are simplified, the influence on the surrounding environment and the surrounding structure during engineering construction is reduced, the reinforcement cages of the station deep foundation pit and the roof shallow foundation pit are manufactured and installed at one time, the construction working procedure can be simplified, the construction difficulty is reduced, and the construction period is favorably shortened.
Description
Technical Field
The utility model relates to an underground works technical field specifically is a retaining structure who digs station covers.
Background
With the rapid development of urban construction and society in recent years, the cover and excavation construction technology is widely popularized and applied in urban construction in order to reduce the influence on urban traffic, remove dust and reduce noise in construction, strengthen the protection on adjacent buildings (structures) and the like, and simultaneously, great social, economic and technical benefits are obtained.
The horizontal support system in the cover and excavation construction stage is a horizontal support member for supporting a foundation pit supporting structure to resist the action of lateral water and soil pressure. Wherein, the first horizontal brace generally is the roof of station major structure, and the earthing of station roof is about 3m generally, and generally the roof is chosen outward and is supported in station envelope's crown beam. The cover-excavation station enclosure structure comprises a deep foundation pit enclosure wall, a crown beam and a roof shallow foundation pit retaining wall which are arranged from bottom to top in a layered mode. The three structures are constructed according to the procedures in sequence, and the construction period is longer. The buried depth of the bottom of the crown beam of the enclosure structure is about 5m generally, namely the depth of the shallow foundation pit of the top plate of the station covered and dug. For supporting and protecting a shallow foundation pit of a top plate of a covered and excavated station, after the support structure of the deep foundation pit of the covered and excavated station is finished, a slope is generally put and excavated to the bottom of a crown beam, then the crown beam and a retaining wall of the support structure of the deep foundation pit of the station are constructed, and after the top plate of the station is finished, earth is backfilled and covered and ground traffic is recovered. The slope-laying excavation construction occupies a large area, and soil behind the retaining wall needs to be backfilled after the top plate shallow foundation pit retaining wall above the crown beam is constructed. The construction procedures of the top plate shallow foundation are changed more, the work efficiency of a construction site is slow, and the construction cost is high.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of prior art, the utility model provides a cover and dig envelope of station for improve the cover and dig car station envelope's efficiency of construction, reduce the construction degree of difficulty, shorten construction cycle.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a retaining structure who covers and dig station, is including setting up at the deep basal pit enclosure wall that covers and dig station ground even wall grooving, setting up on the deep basal pit enclosure wall and the shallow foundation pit barricade of roof that thickness is less than deep basal pit enclosure wall, the upper surface of deep basal pit enclosure wall flushes with the bottom surface of the shallow foundation pit of roof, is provided with the combination steel reinforcement cage of sharing in deep basal pit enclosure wall and the shallow foundation pit barricade of roof.
Further, for better realization the utility model discloses, deep basal pit enclosure wall's upper surface be provided with guan liang, the atress owner muscle anchor of steel reinforcement cage goes into guan liang.
Further, for better realization the utility model discloses, the upper surface of roof shallow foundation ditch barricade be provided with barricade guan liang, the atress owner muscle anchor of steel reinforcement cage goes into in the barricade guan liang.
The beneficial effect that this scheme obtained is:
the combined retaining structure construction of the station deep foundation pit and the roof shallow foundation pit can be realized by the combined steel reinforcement cage, the operation space of foundation pit engineering is reduced, the influence on the surrounding environment and the surrounding structure during engineering construction is reduced, the steel reinforcement cages of the station deep foundation pit and the roof shallow foundation pit are manufactured and installed at one time, the construction process can be simplified, the construction difficulty is reduced, and the construction period is favorably shortened.
Drawings
FIG. 1 is a schematic cross-sectional view of the enclosure wall of the present embodiment;
FIG. 2 is a schematic structural view of a modular reinforcement cage;
FIG. 3 is a schematic construction diagram of step S2;
FIG. 4 is a schematic construction diagram of step S3;
FIG. 5 is a schematic construction diagram of step S4;
FIG. 6 is a schematic construction diagram of step S5;
FIG. 7 is a schematic construction diagram of step S6;
FIG. 8 is a schematic construction diagram of step S7;
FIG. 9 is a schematic construction diagram of step S8;
fig. 10 is a schematic cross-sectional view of the enclosure wall in step S5.
Wherein: 1-guide wall, 2-diaphragm wall grooving, 3-cover excavation deep foundation pit enclosure wall, 4-roof shallow foundation pit retaining wall, 5-plain concrete retaining wall, 6-center pillar pile foundation, 7-steel pipe concrete center pillar, 8-shallow foundation pit retaining wall crown beam, 9-cover excavation deep foundation pit crown beam and 10-station roof.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Example 1:
as shown in fig. 1 and fig. 2, in this embodiment, the enclosure structure for covering and digging a station includes a cover-digging deep foundation pit enclosure wall 3 disposed in a cover-digging station diaphragm wall grooving 2, and a top plate shallow foundation pit retaining wall 4 disposed on the cover-digging deep foundation pit enclosure wall 3 and having a thickness smaller than that of the deep foundation pit enclosure wall 3, wherein an upper surface of the cover-digging deep foundation pit enclosure wall 3 is flush with a bottom surface of the top plate shallow foundation pit, and a common combined steel reinforcement cage is disposed in the cover-digging deep foundation pit enclosure wall 3 and the top plate shallow foundation pit retaining wall 4.
In the traditional construction method, the structures of the cover-excavation deep foundation pit enclosure wall 3, the cover-excavation deep foundation pit crown beam 9, the top plate shallow foundation pit retaining wall 4 and the like are constructed in layers according to the procedures, so that the construction period is longer, and the slope-releasing excavation construction is adopted for constructing the deep foundation pit crown beam 9 and the top plate shallow foundation pit retaining wall 4, so that the site occupied by the construction range is larger, and the influences on the surrounding environment, traffic and buildings are larger.
This scheme utilization combination steel reinforcement cage is convenient for be under construction as a whole with the deep basal pit enclosure wall 3 and the roof shallow basal pit barricade 4 that the station was dug to the lid, avoids the construction in stages and leads to construction cycle length, construction operation space big and influence the regional all ring edge borders of construction. The construction procedure of the shallow foundation of the top plate is simplified, the construction efficiency is improved, and the construction period is shortened. The specific construction method comprises the following steps:
step S1: as shown in fig. 2, a combined reinforcement cage for covering and excavating a deep foundation pit retaining wall 3 and a roof shallow foundation pit retaining wall 4 for construction is manufactured. The bottom of the cover-excavation deep foundation pit crown beam 9 is manufactured according to the reinforcement of the deep foundation pit diaphragm wall, the main reinforcement of the earth facing side of the diaphragm wall extends to the shallow foundation pit retaining wall crown beam 8, the range from the cover-excavation deep foundation pit crown beam 9 to the shallow foundation pit retaining wall crown beam 8 is manufactured according to the reinforcement of the shallow foundation pit enclosure, and meanwhile, the middle additional reinforcement of the diaphragm wall and the main reinforcement of the diaphragm wall are reserved in the anchoring mode and anchored into the cover-excavation deep foundation pit crown beam 9 and the shallow foundation pit retaining wall crown beam 8. Therefore, the strength of the enclosure wall after construction can meet the design requirement, and the connection strength of the cover-excavated deep foundation pit enclosure wall 3 and the top plate shallow foundation pit retaining wall 4 can be ensured.
Step S2: as shown in fig. 3, the construction site is leveled, two guide walls 1 are constructed along the length direction of the covered and excavated station, two diaphragm wall grooving 2 are excavated by using the guide walls 1 as a reference, and the depth of the diaphragm wall grooving 2 is equal to the height of the combined reinforcement cage. And 2, the space of the diaphragm wall grooving 2 of the diaphragm wall of the deep foundation pit of the station is excavated by the cover, so that the construction of a combined enclosure structure of the deep foundation pit and the shallow foundation pit of the top plate of the station is realized, and the operation space of foundation pit engineering is reduced.
Step S3: as shown in fig. 4, the combined reinforcement cage is hoisted in the underground diaphragm wall grooving 2 and concrete is poured to form a building envelope, the part without the reinforcement cage in the underground diaphragm wall grooving forms a plain concrete wall 5 in the retaining wall, and a pile foundation 6 for covering and excavating a station center pillar and a steel pipe concrete center pillar 7 are constructed at the same time.
Through reasonable setting plain concrete wall 5, can realize covering the deep basal pit enclosure wall 3 and the roof shallow basal pit barricade 4 integration one-time concreting that digs the station to play the effect of simplifying construction process, shortening construction cycle, improvement efficiency of construction, plain concrete wall 5 can support the soil body on every side and avoid the construction process to receive the influence. And meanwhile, after the plain concrete wall 5 is chiseled, the construction of covering and excavating the deep foundation pit crown beam 9 can be realized. The plain concrete wall 5 is made of pure concrete, so that the plain concrete wall is easy to chive, and the construction difficulty cannot be increased.
Step S4: as shown in fig. 5, the earthwork of the top plate shallow foundation pit is excavated to the designed elevation of the bottom of the retaining wall crown beam 8, that is, the first excavation surface, and the half width guide wall 1 in the inner side range of the top plate shallow foundation pit is broken in the excavation process, so that the shallow foundation pit retaining wall crown beam 8 is constructed and completed. The retaining wall crown beam 8 is arranged along the periphery of the station foundation pit so as to enhance the integrity of the station enclosure structure.
Step S5: as shown in fig. 6, the earthwork of the top plate shallow foundation pit is continuously excavated to the designed elevation of the bottom of the cap excavation deep foundation pit crown beam 9, that is, the bottom of the top plate shallow foundation pit, the plain concrete wall 5 is gradually chiseled downwards in the excavation process, and the cap excavation deep foundation pit crown beam 9 is timely implemented and completed. And the cover-excavated deep foundation pit crown beam 9 is arranged on the upper surface of the deep foundation pit enclosure wall 3 along the enclosure structure.
Step S6: as shown in fig. 7, the station roof 10 is completed, the two ends of the station roof 10 are supported on the deep foundation pit crown beams 9 in an overhanging manner, and the longitudinal beam in the middle of the station roof 10 is connected with the steel pipe concrete center pillar 7. The station top plate 10 can also be used for horizontally supporting the enclosure walls on two sides, so that the deformation of the enclosure walls is avoided. Concrete filled steel tube center pillar 7 can play vertical braces's effect to station roof 10 middle part, ensures foundation ditch and major structure's safety.
Step S7: as shown in fig. 8, after the construction of the station roof 10 is completed and the strength of concrete reaches the design requirement, a roof waterproof structure is constructed. Chiseling a half guide wall 1 in the outer side range of the top plate shallow foundation pit, moving back municipal pipelines, completing backfilling of top plate soil covering, applying the top plate soil covering as a municipal road surface and recovering traffic.
Step S8: and continuously excavating earthwork below the station top plate 10 to the bottom of the deep foundation pit layer by layer, and erecting vertical supports in time to complete effective support of the station foundation pit covered and excavated.
The scheme realizes that the combined enclosure structure of the deep and shallow foundation pit is completed in the groove of the framing operation of the diaphragm wall, and the whole construction process realizes 'supporting and digging firstly', effectively controls the settlement of the earth surface, and further reduces the risk of construction on surrounding buildings and structures.
The scheme can make full use of the space of the cover-dug deep foundation pit diaphragm wall grooving 2 to be applied as the enclosure structure of the top plate shallow foundation pit, limit the operation space of the top plate shallow foundation pit in the range of the enclosure wall of the station deep foundation pit, reduce the operation space of the enclosure wall to the maximum extent, effectively reduce the occupied area of construction and reduce the early-stage coordination difficulty of engineering.
The utility model discloses according to the atress characteristic and the process that the lid digs station deep basal pit and roof shallow basal pit, the combination of the steel reinforcement cage that has proposed the effective combination of deep basal pit arranges the pattern. Wherein, the lower part of the bottom of the crown beam is configured according to the enclosure wall, and the upper part of the bottom of the crown beam is configured according to the enclosure structure of the shallow foundation pit of the top plate. The one-time integral manufacturing, hoisting and installation of the combined reinforcement cage for covering and digging the deep foundation pit and the top plate shallow foundation pit of the station are realized.
The utility model discloses a main measure and preface also are applicable to fender pile, and engineering application scope is wide.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical spirit of the present invention is within the spirit and principle of the present invention, and any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a envelope of station is dug to lid which characterized in that: the deep foundation pit retaining wall is excavated by the cover arranged in the cover-excavated station diaphragm wall grooving (2), the top plate shallow foundation pit retaining wall (4) is arranged on the deep foundation pit retaining wall (3) and is smaller than the deep foundation pit retaining wall (3) in thickness, the upper surface of the deep foundation pit retaining wall (3) is flushed with the bottom surface of the top plate shallow foundation pit, and a shared combined steel reinforcement cage is arranged in the deep foundation pit retaining wall (3) and the top plate shallow foundation pit retaining wall (4).
2. A building envelope for covering and excavating a station as claimed in claim 1, wherein: the upper surface of the cover-excavated deep foundation pit enclosure wall (3) is provided with a station deep foundation pit crown beam (9), and a stress main rib of the reinforcement cage is anchored into the station deep foundation pit crown beam (9).
3. A building envelope for covering and excavating a station as claimed in claim 1, wherein: the upper surface of roof shallow foundation ditch barricade (4) be provided with roof shallow foundation ditch barricade guan liang (8), the atress owner muscle anchor of steel reinforcement cage goes into shallow foundation ditch barricade guan liang (8) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920778900.7U CN210459300U (en) | 2019-05-28 | 2019-05-28 | Enclosure structure for covering and digging station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920778900.7U CN210459300U (en) | 2019-05-28 | 2019-05-28 | Enclosure structure for covering and digging station |
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| CN210459300U true CN210459300U (en) | 2020-05-05 |
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| CN201920778900.7U Active CN210459300U (en) | 2019-05-28 | 2019-05-28 | Enclosure structure for covering and digging station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106919A (en) * | 2019-05-28 | 2019-08-09 | 成都市建筑设计研究院 | A kind of lid digs the building enclosure and its construction method at station |
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2019
- 2019-05-28 CN CN201920778900.7U patent/CN210459300U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106919A (en) * | 2019-05-28 | 2019-08-09 | 成都市建筑设计研究院 | A kind of lid digs the building enclosure and its construction method at station |
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Address after: 610017 No. 4, floor 1, building 1, No. 28, dongchenggenxia street, Qingyang District, Chengdu, Sichuan Patentee after: Chengdu architectural design and Research Institute Co.,Ltd. Address before: No.16, dongyuheyan street, Qingyang District, Chengdu, Sichuan 610017 Patentee before: CHENGDU ARCHITECTURAL DESIGN & Research Institute |
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