CN210797573U - Underground structure internal transportation system based on under-board sliding groove - Google Patents
Underground structure internal transportation system based on under-board sliding groove Download PDFInfo
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- CN210797573U CN210797573U CN201921274416.7U CN201921274416U CN210797573U CN 210797573 U CN210797573 U CN 210797573U CN 201921274416 U CN201921274416 U CN 201921274416U CN 210797573 U CN210797573 U CN 210797573U
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Abstract
The utility model relates to an inside transportation system of underground structure based on board gliding groove sets up vertically and horizontally staggered's the roof beam that turns over down in structure roof and structure medium plate bottom, and the beam bottom of turning over the roof beam down sets up pre-buried spout, and in T type crab-bolt can be conveniently fixed in the spout, utilize the ball to realize having no friction slip between T type bolt and the spout, T type crab-bolt provides the anchor point that the goods and materials transportation needs in standing. The utility model discloses by the built-in spout in the underslab structure turn over roof beam and T type crab-bolt form the atress system down, satisfy the transportation needs that the foundation pit lid dug regional material, dig partial portal crane and cover based on the foundation pit open cut and dig transport system under the partial structure board, realize the colleges and universities transportation of all kinds of materials during foundation pit excavation and major structure are pour, effectively avoid conventional foundation pit excavation and major structure to pour during, in-station material transportation route and foundation pit support space conflict, can show improvement underground works efficiency of construction, practice thrift time limit for a project and engineering investment, can provide reference for the underground structure construction.
Description
Technical Field
The utility model belongs to the technical field of underground works, concretely relates to underground structure inside transportation system based on board lower chute.
Background
With the rapid development of economy, in order to guide the reasonable layout and the orderly development of cities and fully utilize underground resources to provide a wide extension space for the development of the cities, in recent years, the underground space gradually develops towards a large buried depth and a large space, in a central urban area with dense population, because of the traffic trip and the daily life needs of people, foundation pit engineering often needs to face the condition of local cover and excavation so as to recover road traffic as soon as possible and reduce the influence time and the influence degree of the engineering on the periphery to the minimum, so that how to efficiently and rapidly finish the access and the transportation of materials required by a site in the development process of the underground space is a key factor influencing the smooth and efficient propulsion of the engineering.
As a typical representative of underground engineering, in the process of foundation pit excavation and main body structure construction of an urban rail transit underground station, due to the existence of a plurality of inner supports arranged in the height direction of a foundation pit in a conventional open-cut foundation pit, a horizontal through transportation path of a gantry crane is blocked, materials in the pit can be horizontally transported after being vertically lifted to a ground elevation, the earthwork is transported outwards and various building materials are transported, particularly the horizontal transportation of the materials in the station is relatively low in efficiency, and the efficient propulsion of the engineering is restricted to a certain extent. And even in some cases, the method becomes a limiting factor of the construction period of the underground engineering. The transportation efficiency of the earthwork outward transportation and various building materials is directly related to whether the preset project plan can be smoothly realized, the construction cost is related, the efficiency is low by simply depending on the transportation mode of the gantry crane above the foundation pit, and huge potential safety hazards and investment waste can be caused.
Disclosure of Invention
The utility model aims at providing an inside transportation system of underground structure based on spout under board turns over the roof beam under the structural slab sets up, turns over pre-buried spout in the roof beam under, reserves T type bolt in the spout and stretches into and mechanical anchoring condition, provides the interior material transportation equipment atress fulcrum of standing, realizes covering the level of digging all kinds of building material under the structural slab to the transportation demand.
The utility model discloses the technical scheme who adopts does:
inside transportation system of underground structure based on board gliding groove, including the underground works major structure that needs local lid to dig the construction, major structure includes structure roof, structure medium plate, structure bottom plate, side wall and structure post, and the side wall outside of major structure is foundation ditch fender pile, its characterized in that:
the transverse downward turning beam and the longitudinal downward turning beam which are staggered in a longitudinal mode are arranged below the structure top plate and the structure middle plate, the sliding grooves are pre-embedded at the bottoms of the transverse downward turning beam and the longitudinal downward turning beam, and the T-shaped anchor bolts are fixedly embedded in the sliding grooves to achieve translation and hoisting of materials in the station.
The transverse downward turning beam and the longitudinal downward turning beam are communicated with a long embedded sliding groove, and the sliding grooves are intersected and communicated at the intersection point of the transverse downward turning beam and the longitudinal downward turning beam.
The cross section of the sliding chute is C-shaped, the opening is downward, a T-shaped groove is formed inside the sliding chute, the upper part of the T-shaped anchor bolt is embedded into the T-shaped groove, and the lower part of the T-shaped anchor bolt is connected with material transportation equipment in the station, so that the material in the station can transversely and longitudinally move.
And the T-shaped bolt and the sliding groove realize frictionless sliding by using a ball.
The spout top surface is provided with dry type crab-bolt, and dry type crab-bolt top has two enlarged ends.
The dry type crab-bolt symmetry of spout top surface sets up two.
The transverse downward turning beam and the longitudinal downward turning beam are respectively arranged one or more than one under the structural top plate and the structural middle plate, wherein the transverse downward turning beam and the structural column are positioned at the same cross section position.
The underground engineering foundation pit is composed of an open excavation section and a cover excavation section, the main structure of the cover excavation section is implemented in advance, and the open excavation section is provided with a gantry crane.
The utility model has the advantages of it is following:
the utility model provides a novel underground structure during construction material transportation theory, richened current foundation ditch excavation and the interior material transportation method of standing. The foundation pit fender pile related to the foundation pit engineering and the main structure construction is a conventional cast-in-situ bored pile, the construction process is mature, and related hole-forming pile driving equipment and other auxiliary facilities are conventional mechanical equipment; waterproof materials, waterproof concrete, templates, reinforcing steel bars and the like involved in the construction of the main body structure are all conventional materials. The downward-turning beam and the pre-buried sliding groove are arranged under the structural slab, the specific number, the positions and the like can be flexibly determined according to the transportation needs of materials in a station, the transportation efficiency of the materials below the top plate dug in a covering mode during construction is effectively improved, the construction period is shortened, the engineering investment is saved, and the economic and technical benefits are remarkable.
The embedded sliding groove arranged in the downward turning beam of the structural slab is made of conventional steel, the number and the length of the back dry bolts can be comprehensively determined according to the vertical anchoring force provided by needs, and the stress requirement of a large vertical load during material transportation is effectively met. The utility model discloses have higher economic benefits and social, have extensive application prospect in underground structure engineering such as urban rail transit, municipal highway, civil buildings.
Drawings
Fig. 1 is a schematic plan view of a foundation pit.
FIG. 2 is a sectional view of excavation of a foundation pit in a region where the structural slab is firstly built (-1 layer of cover excavation construction).
Fig. 3 is a sectional view of excavation of a foundation pit in a first-built area of the structural slab (construction is completed).
Fig. 4 is a schematic view of the embedded sliding groove under the structural plate (bottom view of the structural plate).
Fig. 5 is a schematic view of the embedded chute under the structural plate (a-a cross section view).
In the figure, 1-main structure, 2-fender pile, 3-structure top plate, 4-structure middle plate, 5-structure bottom plate, 6-side wall, 7-structure column, 8-backfill soil body, 9-transverse downward turning beam, 10-longitudinal downward turning beam, 11-chute, 12-dry anchor bolt, 13-T anchor bolt, 14-in-station material transportation equipment, 15-gantry crane, 16-inner support, 17-steel casing, 18-pile foundation and 19-retaining wall.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to an inside transportation system of underground structure based on board gliding chute, including needing local lid to dig the underground works major structure 1 of construction, major structure 1 includes structure roof 3, structure medium plate 4, structure bottom plate 5, side wall 6 and structure post 7, and structure post 7 is provided with one row or multirow at the middle part or strides. The fender post 2 and the structural column 7 bear the weight of the main body structure 1 and the backfill soil body 8 above the main body structure during the excavation of the foundation pit. The foundation pit fender pile 2 and the structural column 7 are constructed before foundation pit excavation.
The lateral wall 6 outside of major structure 1 is foundation ditch fender pile 2, and structure roof 3 and the board of structure medium plate 4 are provided with vertically and horizontally staggered's horizontal turn-down roof beam 9 and vertical turn-down roof beam 10, and horizontal turn-down roof beam 9 and vertical turn-down roof beam 10 bottom pre-buried spout 11, T type crab-bolt 13 inlays and fixes in spout 11, realizes the thing goods and materials translation hoist and mount in the station. The utility model discloses by the board under the structure turn over pre-buried spout 11 in the roof beam and its inside T type bolt 13 and provide vertical atress condition jointly, satisfy the basal pit lid and dig the transportation needs of regional material.
The beam bottoms of the transverse downward turning beam 9 and the longitudinal downward turning beam 10 are communicated with long embedded sliding grooves 11, and the transverse sliding grooves 11 and the longitudinal sliding grooves 11 are intersected and communicated at the intersection point of the transverse downward turning beam 9 and the longitudinal downward turning beam 10. The cross section of the chute 11 is C-shaped, the opening is downward, a T-shaped groove is formed inside the chute, the upper part of a T-shaped anchor bolt 13 is embedded into the T-shaped groove, and the lower part is connected with the material translation equipment 14 in the station and is used for transverse and longitudinal movement of materials. The T-shaped bolt 13 and the sliding groove 11 realize frictionless sliding by using balls. The top surface of the chute 11 is embedded with a dry anchor bolt 12, and the top of the dry anchor bolt 12 is provided with two expanding ends. The dry type anchor bolts 12 on the top surface of the chute 11 are symmetrically arranged in two rows.
The transverse downward turned beams 9 and the longitudinal downward turned beams 10 are provided one or more times under the structural top plate 3 and the structural middle plate 4, respectively, wherein the transverse downward turned beams 9 and the structural columns 7 are located at the same cross-sectional position.
The downward-turning beam and the embedded sliding groove 11 are arranged below the structural slab, the specific number, the position and the like can be flexibly determined according to needs, the number and the length of the dry bolts 12 behind the embedded sliding groove 11 can be comprehensively determined according to the vertical anchoring force required to be provided.
Underground works foundation ditch is become with lid by the open cut section two parts, and lid digs section major structure 1 earlier implementation, and the open cut section sets up portal crane 15. The excavation depth of the open excavation section foundation pit and the excavation progress of the cover excavation section foundation pit are matched as much as possible so as to realize the maximum transportation efficiency of materials in the station.
The gantry crane 15 is responsible for transporting materials between the outside of the foundation pit and the open cut foundation pit, and the in-station material translation equipment 14 is responsible for transporting the materials at each position of the open cut foundation pit in the covering and cutting area. The gantry crane 15 is effectively matched with the in-station material translation system, so that smooth access and movement of construction materials are realized, and the working efficiency in the construction period is improved.
The underground structure internal transportation system based on board gliding groove can realize the reduction of the whole time limit for a project of underground works and the improvement of efficiency of construction, and the convenience of the interior material transportation of standing not only need be considered in the actual engineering, still need consider the potential risk that portal crane transportation probably collided in the foundation ditch during the construction, the utility model discloses it is also very useful to the promotion of engineering safety.
The construction method of the underground structure internal transportation system based on the under-plate sliding groove comprises the following steps:
the method comprises the following steps: leveling a field, driving a precipitation well and foundation pit precipitation, erecting a gantry crane 15 in an open excavation region of the foundation pit, constructing a foundation pit fender post 2 and a structural center column 7, constructing a retaining wall 19, excavating the foundation pit, erecting an inner support until the bottom depth of a structural top plate 3 is excavated, and transversely and longitudinally turning down a beam position and digging a groove;
step two: a sliding chute 11 with a dry anchor bolt 12 arranged at the top is arranged at the middle part of the bottom of the beam turned downwards in the transverse and longitudinal directions, and the opening part of the sliding chute 11 is blocked by a sponge strip to prevent concrete from entering during the pouring of the structural slab; in order to ensure that the position of the sliding chute 11 is relatively fixed during the pouring of the structural slab, the two sides of the sliding chute 11 are limited, namely the two sides of the sliding chute 11 are fixed by pins along the longitudinal direction of the sliding chute 11;
step three: erecting a mould, binding reinforcing steel bars, chiseling concrete at the tops of the fender posts 2 and the structural center columns 7, exposing longitudinal stressed reinforcing steel bars, anchoring the longitudinal stressed reinforcing steel bars into the structural top plate 3, pouring concrete, and pouring, covering and digging part of the structural top plate 3 and the longitudinal and transverse downward turning beams 9 and 10 at corresponding positions;
step four: after the concrete reaches the designed strength, removing the formwork, covering and digging a part of the structure, backfilling the soil 8 above the top plate 3, constructing the pavement, and then recovering the ground traffic of the area;
step five: carrying out earth excavation and timely erecting an inner support in the open excavation part of the foundation pit according to the conventional process until the bottom depth of the structural middle plate 4 or the bottom plate 5 is excavated, and paving a waterproof layer and pouring the structural middle plate 4 or the bottom plate 5 according to requirements;
step six: the foundation pit cover excavation part is continuously excavated downwards, excavation is carried out from the open excavation part at one side or two sides to the cover excavation direction, when the space below the structural top plate 3 is sufficient, sponge strips at the bottom of the sliding groove 11 are pre-buried at the downward turning beam of the top plate 3, and the sealing part of the sliding groove 11 is cleaned;
step seven: the T-shaped bolt 13 is longitudinally plugged along the chute 11, then is rotated by 90 degrees and is fixed at the lower part of the chute 11 through a nut and a gasket, then the T-shaped bolt 13 is connected with the in-station material translation equipment 14, and the in-station material translation equipment 14 is utilized to realize the external transportation of earthwork and the in-station transportation of steel materials, steel templates, scaffolds and waterproof materials;
the gantry crane 15 is responsible for transporting materials between the outside of the foundation pit and the open cut foundation pit, and the in-station material translation equipment 14 is responsible for transporting the materials at the open cut foundation pit at each position of the covering and cutting area;
step eight: when the elevation of the structural middle plate 4 is excavated, the side walls 6, the structural middle plate 4 and the downward-turning beams at the corresponding parts under the side walls are poured in time, the pre-buried chutes 11 are fixed in place before concrete pouring, the structural middle plate 4 is connected with the structural center column 7, and the structures are effectively connected in a manner of reserving a steel bar connector;
step nine: excavating soil below the structural middle plate 4, pouring the side walls 6 in sequence, and laying a waterproof layer and pouring the structural bottom plate 5 in time after excavating to the pit bottom;
step ten: according to the conventional sequence of the structure side wall 6, the structure column 7, the structure middle plate 4 and the structure top plate 3, an open cut partial structure system is poured, after the structure top plate reaches the design strength, backfilling soil 8 is carried out for treatment, road traffic is recovered, and underground structure construction is completed.
The underground engineering covering and digging range can be comprehensively determined according to engineering implementation difficulty, engineering arrangement, ground traffic requirements and the overall engineering condition, and covering and digging or full paving can be considered.
The arrangement of the downward-turning beams arranged below the structural slab and the number of horizontal transportation equipment in the station can be comprehensively determined according to the construction period and the material transportation requirement.
The pre-buried spout in the roof beam turns down, and the biggest vertical bearing capacity that horizontal transport equipment needs to provide in can being based on the station is considered with the structure to specific size, considers the factor of safety that is not less than 2 simultaneously.
The embedded sliding grooves in the downward turning beams are communicated at the intersection of the transverse downward turning beams and the longitudinal downward turning beams so as to ensure that horizontal transportation equipment in the station can reach any required position.
The sliding grooves are embedded in the downward turning beam, chiseling is not needed after the main structure is constructed, and the downward turning beam and the embedded sliding grooves are uniformly processed in the height range of a later-stage decoration layer.
The foundation pit fender post 2 related to the foundation pit engineering and the main structure construction is a conventional cast-in-situ bored pile, the construction process is mature, and related hole-forming pile driving equipment and other auxiliary facilities are conventional mechanical equipment; waterproof materials, waterproof concrete, templates, reinforcing steel bars and the like involved in the construction of the main body structure are all conventional materials.
The utility model has the advantages of simple design, simple and easy operation, low construction cost, simple and convenient process and easy quality control. The pre-buried spout 11 quantity and the concrete position that set up in the roof beam turn down can arrange in the structural slab below in a flexible way according to the goods and materials transportation needs in the station, utilizes the anchor power between pre-buried spout 11 and the dry type bolt 12 behind one's back and the concrete, realizes the requirement of vertical bearing capacity during the goods and materials transportation.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (7)
1. The utility model provides an inside transportation system of underground structure based on spout under board, digs underground works major structure (1) of construction including needs local lid, and major structure (1) is including structure roof (3), structure medium plate (4), structure bottom plate (5), side wall (6) and structure post (7), and side wall (6) outside of major structure (1) is foundation ditch fender pile (2), its characterized in that:
criss-cross violently turn over roof beam (9) and the longitudinal roof beam (10) down of turning over down are provided with under the board of structure roof (3) and structure medium plate (4), turn over roof beam (9) and longitudinal roof beam (10) bottom pre-buried spout (11) down transversely, and T type crab-bolt (13) are inlayed and are fixed in spout (11), realize the thing translation hoist and mount in the station.
2. A glideboard based underground structure internal transportation system according to claim 1, wherein:
the transverse downward turning beam (9) and the longitudinal downward turning beam (10) are communicated with a long embedded sliding groove (11), and the sliding groove (11) is intersected and communicated at the intersection point of the transverse downward turning beam (9) and the longitudinal downward turning beam (10).
3. A glideboard based underground structure internal transportation system according to claim 2, wherein:
the cross section of the chute (11) is C-shaped, the opening is downward, a T-shaped groove is formed inside the chute, the upper part of a T-shaped anchor bolt (13) is embedded into the T-shaped groove, and the lower part of the T-shaped anchor bolt is connected with material transportation equipment (14) in the station, so that the material in the station can transversely and longitudinally move;
the T-shaped anchor bolt (13) and the sliding groove (11) realize frictionless sliding by utilizing the ball.
4. A glideboard based underground structure internal transportation system according to claim 3, wherein:
the top surface of the chute (11) is provided with a dry-type anchor bolt (12), and the top of the dry-type anchor bolt (12) is provided with two expanding ends.
5. A glideboard based underground structure internal transportation system according to claim 4, wherein:
the dry type anchor bolts (12) on the top surface of the sliding chute (11) are symmetrically arranged in two rows.
6. A glideboard based underground structure internal transportation system according to claim 5, wherein:
the transverse downward turning beam (9) and the longitudinal downward turning beam (10) are respectively arranged one or more than one under the structural top plate (3) and the structural middle plate (4), wherein the transverse downward turning beam (9) and the structural column (7) are positioned at the same cross section position.
7. A glideboard based underground structure internal transportation system according to claim 6, wherein:
the underground engineering foundation pit is composed of an open excavation section and a cover excavation section, the main structure (1) of the cover excavation section is implemented in advance, and the open excavation section is provided with a gantry crane (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921274416.7U CN210797573U (en) | 2019-08-08 | 2019-08-08 | Underground structure internal transportation system based on under-board sliding groove |
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| CN201921274416.7U CN210797573U (en) | 2019-08-08 | 2019-08-08 | Underground structure internal transportation system based on under-board sliding groove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439000A (en) * | 2019-08-08 | 2019-11-12 | 中铁第一勘察设计院集团有限公司 | Underground structure internal transportation system and construction method based on plate gliding groove |
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2019
- 2019-08-08 CN CN201921274416.7U patent/CN210797573U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439000A (en) * | 2019-08-08 | 2019-11-12 | 中铁第一勘察设计院集团有限公司 | Underground structure internal transportation system and construction method based on plate gliding groove |
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