CN114032965A - Force transmission belt structure of blocking wall of subway station and construction method thereof - Google Patents
Force transmission belt structure of blocking wall of subway station and construction method thereof Download PDFInfo
- Publication number
- CN114032965A CN114032965A CN202111413604.5A CN202111413604A CN114032965A CN 114032965 A CN114032965 A CN 114032965A CN 202111413604 A CN202111413604 A CN 202111413604A CN 114032965 A CN114032965 A CN 114032965A
- Authority
- CN
- China
- Prior art keywords
- steel
- transmission belt
- force transmission
- bottom plate
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 103
- 230000000903 blocking effect Effects 0.000 title claims abstract description 78
- 238000010276 construction Methods 0.000 title claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 145
- 239000010959 steel Substances 0.000 claims abstract description 145
- 239000004567 concrete Substances 0.000 claims abstract description 39
- 238000012546 transfer Methods 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 16
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000012937 correction Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000002689 soil Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000009415 formwork Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention provides a force transmission belt structure for a blocking wall of a subway station and a construction method thereof, wherein the force transmission belt structure comprises a transfer support structure, a steel support force transmission belt, a steel purlin and fine sand; wherein the transfer support structure is formed on the upper surface of the bottom plate through concrete pouring; the steel purlin is arranged on the plugging wall along the horizontal direction; the steel support force transmission belt is provided with two opposite ends, one end of the steel support force transmission belt is connected with the steel purlin to be fixedly arranged on the plugging wall, and the other end of the steel support force transmission belt is fixedly connected with the upper surface of the bottom plate through the switching support structure; the fine sand is filled in a gap between the bottom plate and the plugging wall; therefore, the steel support force transmission belt is arranged between the upper surface of the bottom plate and the plugging wall, so that sufficient construction space is realized, the horizontal supporting force of the plugging wall is provided, the problems of narrow construction space, difficulty and the like in the prior art are solved, the steel support force transmission belt and the switching supporting structure are easy to disassemble together when the foundation pit is disassembled and supported, and the steel support force transmission belt is circulated.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a subway station foundation pit engineering, and particularly relates to a force transmission belt structure between a blocking wall and a structural bottom plate of a foundation pit and a construction method thereof.
Background
As shown in fig. 1, in the current construction of a subway station foundation pit 10, an end well 11 is generally constructed first and then a standard section 12 is constructed, and an underground continuous wall spaced between the end well 11 and the standard section 12 is used as a temporary enclosure structure and also used as a blocking wall 13 at the position. When the underground structure is removed and poured in the foundation pit 10, in order to ensure the structural safety of the blocking wall 13, a plain concrete force transfer belt 15 is generally adopted between the blocking wall 13 and a bottom plate 14 which is one of the underground structures as a temporary support to transfer horizontal force, and the plain concrete force transfer belt 15 and the blocking wall 13 are tightly connected with the bottom plate 14 to ensure that the pressure on one side of the blocking wall 13 is effectively transferred to the bottom plate.
It should be noted that, due to the narrow space between the blocking wall 13 and the bottom plate 14, the construction of the conventional plain concrete force transmission belt 15 is difficult, which affects the construction period. In addition, when the blocking wall 13 is removed, the plain concrete force transmission belt 15 as the temporary structure is generally removed together by a manual chiseling method, but when the bottom plate 14 is constructed, a waterproof structure such as a waterproof belt and an embedded steel bar connector are arranged on the end surface facing the blocking wall 13, so that the waterproof structure and the steel bar connector are easily damaged when the plain concrete force transmission belt 15 is removed.
In addition, the plain concrete force transmission belt 15 between the existing connecting plugging wall 13 and the bottom plate 14 can only be used as construction waste after being dismantled, and cannot be reused, so that the construction cost is increased.
Disclosure of Invention
In view of the above situation, the invention provides a force transfer belt structure for a blocking wall of a subway station and a construction method thereof, wherein the steel support force transfer belt structure is arranged between the upper surface of a bottom plate and the blocking wall to provide horizontal supporting force for the blocking wall, so that the safety of a foundation pit is ensured, and the problems of narrow construction space, difficult construction and the like caused by the fact that the conventional plain concrete force transfer belt is required to be arranged in a gap between the bottom plate and the blocking wall are solved.
In order to achieve the aim, the technical scheme adopted by the invention is to provide a force transmission belt structure of a blocking wall of a subway station, which is arranged between the blocking wall and a bottom plate of a foundation pit of the subway station; the force transmission belt structure comprises a transfer support structure, a steel support force transmission belt, a steel purlin and fine sand; wherein: the transfer support structure is formed on the upper surface of the bottom plate through concrete pouring; the steel purlin is arranged on the plugging wall along the horizontal direction; the steel support force transmission belt is provided with two opposite ends, one end of the steel support force transmission belt is connected with the steel purlin to be fixedly arranged on the plugging wall, and the other end of the steel support force transmission belt is fixedly connected with the upper surface of the bottom plate through the switching support structure; and the fine sand is filled in a gap between the bottom plate and the plugging wall.
The invention further improves the force transmission belt structure of the blocking wall of the subway station, wherein the steel support force transmission belt comprises a steel pipe section and two connecting ends, the two ends of the steel pipe section are defined as a first end and a second end respectively, the first end is fixedly connected with a first connecting end, the second end is fixedly connected with a second connecting end, the steel support force transmission belt is fixedly connected with the steel purlin through the first connecting end, and the steel support force transmission belt is fixedly connected with the switching support structure through the second connecting end.
The invention further improves the force transmission belt structure of the blocking wall of the subway station, wherein the switching support structure comprises a support bracket and an embedded steel plate, the support bracket and the embedded steel plate are arranged on the embedded steel plate, the support bracket is of a concrete structure which is poured and formed on the upper surface of the bottom plate, and the embedded steel plate is embedded on the end surface, facing the blocking wall, of the support bracket; and a second connecting end of the steel support force transmission belt is fixedly connected with the switching support structure and is switched on the upper surface of the bottom plate.
The invention further improves the force transmission belt structure of the blocking wall of the subway station, wherein the embedded steel plate is welded and fixed with the reinforcing steel bars arranged in the supporting bracket in advance before the concrete is poured on the supporting bracket, so that the embedded structure is formed after the supporting bracket is poured and formed.
The invention further improves the force transmission belt structure of the blocking wall of the subway station, wherein the first connecting end and the second connecting end are both of steel wedge block structures and are fixedly arranged at two opposite ends of the steel pipe section in a mirror symmetry manner.
The invention also provides a construction method of the force transmission belt structure of the blocking wall of the subway station, which comprises the following steps:
the steel purlin constructing method comprises the following steps: constructing the steel enclosing purlin on the wall surface of the blocking wall;
a bottom plate construction step: binding the steel bars of the bottom plate, erecting a template, pouring concrete and maintaining;
the method comprises the following steps of: binding and connecting the reinforcing steel bars of the support bracket with the reinforcing steel bars of the bottom plate, welding and fixing the embedded steel plates and the reinforcing steel bars of the support bracket, erecting a template, and then pouring concrete and maintaining;
fine sand backfilling: removing the template after the concrete curing of the bottom plate and the support bracket is finished, and filling the fine sand in a gap between the side end surface of the bottom plate and the wall surface of the blocking wall;
hoisting a steel support force transmission belt: hoisting the steel support force transmission belt between the support bracket and the blocking wall;
installing a steel support force transmission belt: after in-place correction, welding and fixing a first connecting end of the steel support force transmission belt with the steel purlin; and then, applying prestress on a second connecting end of the steel support force transmission belt so as to enable the second connecting end to be fixedly connected with the embedded steel plate of the switching support structure, thereby forming the force transmission belt structure switched between the upper surface of the bottom plate and the blocking wall.
The construction method of the force transfer belt structure of the blocking wall of the subway station is further improved in that the bottom plate construction step and the support bracket construction step are carried out synchronously, the steps comprise finishing the binding of reinforcing steel bars of the bottom plate and the support bracket, then carrying out the formwork support of the bottom plate and the support bracket, and then synchronously carrying out concrete pouring and maintenance to enable the bottom plate and the support bracket to form a concrete integrated structure formed at the same time.
The construction method of the force transmission belt structure of the blocking wall of the subway station is further improved in that the bottom plate construction step further comprises the step of welding and fixing the steel bars of the bottom plate with the waterproof structure and the steel bar connector, so that the waterproof structure and the steel bar connector are exposed on the end face of the side edge facing the blocking wall after the concrete is poured on the bottom plate.
The construction method of the force transmission belt structure of the blocking wall of the subway station is further improved in that the step of installing the steel support force transmission belt further comprises the step of fixedly connecting the second connecting end with the embedded steel plate; and the second connecting end and the embedded steel plate are fixedly connected by welding and/or screwing.
The construction method of the force transmission belt structure of the blocking wall of the subway station is further improved in that after the step of installing the steel support force transmission belt, the steel support force transmission belt and the switching support structure are synchronously dismantled when the blocking wall is dismantled.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
(1) the invention provides a force transmission belt structure suitable for the construction of foundation pit engineering of a subway station and a construction method thereof, wherein one end of a steel support force transmission belt is connected with a subway station bottom plate through a switching support structure (a support bracket), and the other end of the steel support force transmission belt is connected with a temporary underground continuous wall serving as a blocking wall; borrow this, make and pass the power area and leg and blocking wall zonulae occludens to transmit the bottom plate with the side soil pressure transmission behind the blocking wall through steel shotcrete power area and leg, guaranteed that the foundation ditch is torn open and is propped and the structure safety of in-process shutoff wall is pour to underground structure, ensure that foundation ditch construction is stable and safe.
(2) The invention provides a force transfer belt structure suitable for subway station foundation pit engineering construction and a construction method thereof.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description and appended claims, and may be realized by means of the instrumentalities, devices and combinations particularly pointed out in the appended claims.
Drawings
Fig. 1 is a schematic view of a vertical structure of a blocking wall and a bottom plate in the existing subway station foundation pit construction, which are connected with a plain concrete force transmission belt.
Fig. 2 is a schematic side view of the force transmission belt structure of the blocking wall of the subway station.
Fig. 3 is a side view of the force transfer belt of the steel support of the present invention.
Fig. 4 is a schematic plane structure diagram of the force transmission belt structure applied between a blocking wall and a bottom plate in a foundation pit of a subway station.
Fig. 5 is a schematic plane structure diagram of the force transmission belt structure applied between the vertical column and the underground connecting wall in the foundation pit of the subway station.
The correspondence of reference numerals to components is as follows:
a subway station foundation pit 10; an end well 11; a standard section 12; a plugging wall 13; a base plate 14; reinforcing steel bars 141; a plain concrete force transfer belt 15; a waterproof structure 16; a reinforcing bar connector 17; a column 18; underground connecting walls 130; the transition support structure 20; a support bracket 21; pre-burying a steel plate 22; a steel support force transfer belt 30; a steel pipe section 31; a first end 301; a second end 302; a first connection terminal 32; a second connection terminal 33; a steel purlin 40; fine sand 50.
Detailed Description
To facilitate an understanding of the present invention, the following description is made in conjunction with the accompanying drawings and examples.
Referring to fig. 2 to 5, the invention provides a force transmission belt structure for a blocking wall of a subway station and a construction method thereof, and referring to fig. 1 and fig. 2 and fig. 4, an end well 11 of a foundation pit 10 of the subway station is constructed before a standard section 12, an underground continuous wall spaced between the end well 11 and the standard section 12 is used as a temporary blocking wall 13, and the end well 11 is constructed as the force transmission belt structure provided by the invention on a bottom plate 14 after cushion layer construction of the bottom plate 14 is completed; the standard section 12 is removed together with the blocking wall 13 after the construction of the bottom plate 14 is completed. Therefore, the force transmission belt structure is used for connecting the blocking wall 13 and the bottom plate 14 of the subway station foundation pit 10, so that the soil pressure on the rear side of the blocking wall 13 is transmitted to the bottom plate 14 through the force transmission belt structure, the structural safety of the blocking wall 13 (underground connecting wall) in the processes of foundation pit support removal and underground structure pouring is guaranteed, and the construction stability and safety of the foundation pit are guaranteed.
As shown in fig. 2, 3 and 4, the force transmission belt structure comprises an adapter support structure 20, a steel support force transmission belt 30, a steel purlin 40 and fine sand 50. Wherein the transit support structure 20 is formed on the upper surface of the bottom plate 14 by concrete casting; the steel purlin 40 is arranged on the blocking wall 13 along the horizontal direction; the steel support force transmission belt 30 has two opposite ends, one end of the steel support force transmission belt is fixedly arranged on the blocking wall 13 by being connected with the steel purlin 40, and the other end of the steel support force transmission belt is fixedly connected with the upper surface of the bottom plate 14 by the switching support structure 20; the fine sand 50 is filled in a gap between the bottom plate 14 and the plugging wall 13; therefore, the effect of transmitting the soil pressure at the rear side of the blocking wall 13 to the bottom plate 14 is achieved, the steel support force transmission belt 30 is easily removed together when the foundation pit is subjected to support removal, and the switching support structure 20 is chiseled.
Specifically, as shown in fig. 2, 3 and 4, the transition support structure 20 is a transition connection structure made of concrete. Switching bearing structure 20 is including supporting bracket 21 and pre-buried steel sheet 22, support the protruding locating of bracket 21 the upper surface of bottom plate 14, support bracket 21 orientation be equipped with on the terminal surface of shutoff wall 13 pre-buried steel sheet 22.
In the embodiment of the present invention, the support bracket 21 is formed as a three-dimensional trapezoidal block having a trapezoidal longitudinal sectional shape (see fig. 2) and a square transverse sectional shape (see fig. 4).
In the embodiment of the present invention, the support bracket 21 may be formed by casting integrally with the bottom plate 14 through a template design, or a template may be additionally cast on the upper surface of the bottom plate 14 after the bottom plate 14 is cast.
In the embodiment of the present invention, the embedded steel plate 22 is welded and fixed to the steel bars inside the supporting bracket 21 before the concrete is poured on the supporting bracket 21, so as to form an embedded structure after the supporting bracket 21 is poured.
Specifically, as shown in fig. 2 and 3, the steel support force transfer belt 30 includes a steel pipe section 31 and two connection end heads, two ends of the steel pipe section 31 are defined as a first end 301 and a second end 302, the first end 301 is fixedly connected with a first connection end head 32, the second end 302 is fixedly connected with a second connection end head 33, and the steel support force transfer belt 30 is fixedly connected with the blocking wall 13 through the first connection end head 32 and is fixedly connected with the embedded steel plate 22 of the transfer support structure 20 through the second connection end head 33.
In the embodiment of the present invention, as shown in fig. 3, the first connection end 32 and the second connection end 33 are both steel wedge structures and are fixed at two opposite ends of the steel pipe joint 31 in a mirror symmetry manner.
Specifically, as shown in fig. 2, 3 and 4, the steel purlin 40 is a long steel plate disposed at the joint between the blocking wall 13 and the steel support force transmission belt 30, and a horizontally extending long steel plate is exposed on the wall surface of the blocking wall 13 for welding and fixing with the first connection end 32 of the steel support force transmission belt 30.
Specifically, as shown in fig. 2 and 4, the fine sand 50 is filled in the gap between the blocking wall 13 and the bottom plate 14, so as to effectively prevent the waterproof structure 16 and the reinforcing bar connector 17 arranged on the end surface of the bottom plate 14 from being damaged in the process of removing the support of the foundation pit.
In the embodiment of the present invention, as shown in fig. 5, the force transmission belt structure of the present invention may be further disposed between the vertical column 18 and the underground connecting wall 130 in the foundation pit 10 of the subway station, so that the pressure of the soil on the rear side of the underground connecting wall 130 is transmitted to the vertical column 18 through the steel support force transmission belt 30 and the transferring support structure 20, thereby ensuring the structural safety of the underground connecting wall 130 during the processes of dismantling the support of the foundation pit and pouring the underground structure, and ensuring the stability and safety of the foundation pit construction.
In the embodiment of the present invention, as shown in fig. 4 and 5, a plurality of force transmission belt structures of the present invention may be arranged at intervals along the extending direction of the side end surface of the bottom plate 14 or the horizontal direction of the side surface of the upright post 18 according to the actual engineering requirements.
The concrete embodiment of the force-transmitting belt structure of the blocking wall of the subway station of the present invention is described above, and the following description refers to fig. 2 to 5 to describe the construction method of the force-transmitting belt structure of the present invention, wherein the steps of the construction method include:
the steel purlin constructing method comprises the following steps: constructing the steel enclosing purlin 40 on the wall surface of the blocking wall 13;
a bottom plate construction step: binding the steel bars 141 of the bottom plate 14, erecting a template, pouring concrete and maintaining;
the method comprises the following steps of: binding and connecting the reinforcing steel bars of the supporting bracket 21 with the reinforcing steel bars 141 of the bottom plate 14, welding and fixing the embedded steel plates 22 with the reinforcing steel bars of the supporting bracket 21, erecting a template, and then pouring concrete and maintaining;
fine sand backfilling: after the concrete curing of the bottom plate 14 and the support bracket 21 is completed, the formwork is removed, and the fine sand 50 is filled in a gap between the side end surface of the bottom plate 14 and the wall surface of the blocking wall 13;
hoisting a steel support force transmission belt: hoisting the steel support force transfer belt 30 between the support bracket 21 and the blocking wall 13;
installing a steel support force transmission belt: after in-place correction, welding and fixing the first connecting end 32 of the steel support force transmission belt 30 and the steel purlin 40; then, a prestress is applied to the second connection end 33 of the steel-supported force transmission belt 30, so that the second connection end 33 is tightly connected with the embedded steel plate 22 of the adapting support structure 20, and the force transmission belt structure adapted between the upper surface of the bottom plate 14 and the plugging wall 13 is formed.
In the embodiment of the present invention, the bottom plate applying step and the support bracket applying step may simultaneously complete the reinforcement of the bottom plate 14 and the support bracket 21, and then the formwork of the bottom plate 14 and the support bracket 21 is erected, and the concrete pouring and curing are simultaneously performed, so that the bottom plate 14 and the support bracket 21 form a concrete integrated structure formed at the same time. The bottom plate constructing step and the support bracket constructing step can also be sequentially completed after the construction of the bottom plate 14 is completed, then the reinforcing steel bars of the support bracket 21 and the reinforcing steel bars which are reserved to protrude out of the upper surface of the bottom plate 14 are bound, then a template is erected, and finally concrete is poured and maintained, so that the support bracket 21 which is connected with the bottom plate 14 to form an integral structure is formed on the upper surface of the bottom plate 14.
Further, as shown in fig. 2, the step of applying the bottom plate further includes welding and fixing the steel bars 141 of the bottom plate 14 to the waterproof structure 16 and the steel bar connector 17, so that the waterproof structure 16 and the steel bar connector 17 are exposed on the side end surface facing the blocking wall 13 after the concrete is poured on the bottom plate 14.
In the embodiment of the present invention, the step of installing the steel support force transmission belt further includes further fixedly connecting the second connection end 33 with the embedded steel plate 22; the fixed connection means between the second connection end 33 and the embedded steel plate 22 includes welding and/or screwing.
In the embodiment of the present invention, the step of installing the steel support force transmission belt further includes removing a hoisting mechanism, and when the blocking wall 13 is removed, the steel support force transmission belt 30 and the transfer support structure 20 are removed synchronously.
In summary, the steel support force transmission belt 30, the transfer support structure 20 and the blocking wall 13 are tightly connected through the installation steps of the construction method, so that the purpose that the steel support force transmission belt 30 and the transfer support structure 20 transmit the soil pressure on the rear side of the blocking wall 13 to the bottom plate 14 is achieved, the structural safety of the blocking wall in the processes of foundation pit support removal and underground structure pouring is guaranteed, and the construction stability and safety of the foundation pit are guaranteed.
While the present invention has been described in detail and with reference to the accompanying drawings and examples, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A force transmission belt structure of a blocking wall of a subway station is arranged between the blocking wall and a bottom plate of a foundation pit of the subway station; the force transmission belt structure is characterized by comprising a transfer support structure, a steel support force transmission belt, a steel purlin and fine sand; wherein:
the transfer support structure is formed on the upper surface of the bottom plate through concrete pouring;
the steel purlin is arranged on the plugging wall along the horizontal direction;
the steel support force transmission belt is provided with two opposite ends, one end of the steel support force transmission belt is connected with the steel purlin to be fixedly arranged on the plugging wall, and the other end of the steel support force transmission belt is fixedly connected with the upper surface of the bottom plate through the switching support structure;
and the fine sand is filled in a gap between the bottom plate and the plugging wall.
2. The subway station blocking wall force transmission belt structure of claim 1, characterized in that:
the steel support force transmission belt comprises a steel pipe section and two connecting ends, the two ends of the steel pipe section are respectively a first end and a second end, the first end is fixedly connected with a first connecting end, the second end is fixedly connected with a second connecting end, the steel support force transmission belt is fixedly connected with the steel purlin through the first connecting end, and the steel support force transmission belt is fixedly connected with the switching supporting structure through the second connecting end.
3. The subway station blocking wall force transmission belt structure of claim 2, wherein:
the switching support structure comprises a support bracket and an embedded steel plate, the support bracket and the embedded steel plate are arranged, the support bracket is of a concrete structure formed on the upper surface of the bottom plate in a pouring mode, and the embedded steel plate is embedded in the end face, facing the blocking wall, of the support bracket;
and a second connecting end of the steel support force transmission belt is fixedly connected with the switching support structure and is switched on the upper surface of the bottom plate.
4. The subway station blocking wall force transmission belt structure of claim 3, wherein:
the embedded steel plate is welded and fixed with reinforcing steel bars arranged inside the supporting bracket in advance before the supporting bracket pours concrete, so that an embedded structure is formed after the supporting bracket is poured and formed.
5. The subway station blocking wall force transmission belt structure of claim 2, wherein:
the first connecting end and the second connecting end are both of steel wedge block structures and are fixedly arranged at two opposite ends of the steel pipe section in a mirror symmetry mode.
6. A construction method of the force-transmitting belt structure of the blocking wall of the subway station as claimed in claim 3, characterized in that it comprises:
the steel purlin constructing method comprises the following steps: constructing the steel enclosing purlin on the wall surface of the blocking wall;
a bottom plate construction step: binding the steel bars of the bottom plate, erecting a template, pouring concrete and maintaining;
the method comprises the following steps of: binding and connecting the reinforcing steel bars of the support bracket with the reinforcing steel bars of the bottom plate, welding and fixing the embedded steel plates and the reinforcing steel bars of the support bracket, erecting a template, and then pouring concrete and maintaining;
fine sand backfilling: removing the template after the concrete curing of the bottom plate and the support bracket is finished, and filling the fine sand in a gap between the side end surface of the bottom plate and the wall surface of the blocking wall;
hoisting a steel support force transmission belt: hoisting the steel support force transmission belt between the support bracket and the blocking wall;
installing a steel support force transmission belt: after in-place correction, welding and fixing a first connecting end of the steel support force transmission belt with the steel purlin; and then, applying prestress on a second connecting end of the steel support force transmission belt so as to enable the second connecting end to be fixedly connected with the embedded steel plate of the switching support structure, thereby forming the force transmission belt structure switched between the upper surface of the bottom plate and the blocking wall.
7. The construction method of the force transmission belt structure of the blocking wall of the subway station as claimed in claim 6, characterized in that:
the bottom plate construction step and the support bracket construction step are carried out synchronously, and the steps comprise finishing the reinforcement binding of the bottom plate and the support bracket, then carrying out the template support of the bottom plate and the support bracket, and then synchronously carrying out concrete pouring and maintenance to enable the bottom plate and the support bracket to form a concrete integrated structure formed simultaneously.
8. The construction method of the force transmission belt structure of the blocking wall of the subway station as claimed in claim 6, characterized in that:
the base plate construction step further comprises the step of welding and fixing the steel bars of the base plate with the waterproof structure and the steel bar connector, so that the waterproof structure and the steel bar connector are exposed on the side end face facing the plugging wall after the concrete is poured on the base plate.
9. The construction method of the force transmission belt structure of the blocking wall of the subway station as claimed in claim 6, characterized in that:
the step of installing the steel support force transmission belt further comprises the step of fixedly connecting the second connecting end with the embedded steel plate; and the second connecting end and the embedded steel plate are fixedly connected by welding and/or screwing.
10. The construction method of the force transmission belt structure of the blocking wall of the subway station as claimed in claim 6, characterized in that:
and after the step of installing the steel support force transmission belt, synchronously removing the steel support force transmission belt and the switching support structure when the plugging wall is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111413604.5A CN114032965A (en) | 2021-11-25 | 2021-11-25 | Force transmission belt structure of blocking wall of subway station and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111413604.5A CN114032965A (en) | 2021-11-25 | 2021-11-25 | Force transmission belt structure of blocking wall of subway station and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114032965A true CN114032965A (en) | 2022-02-11 |
Family
ID=80145501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111413604.5A Pending CN114032965A (en) | 2021-11-25 | 2021-11-25 | Force transmission belt structure of blocking wall of subway station and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114032965A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704309A (en) * | 2022-03-07 | 2022-07-05 | 中铁第一勘察设计院集团有限公司 | Temporary supporting structure for solving conflict between medium plate shield hole boundary beam and shield in subway station |
| CN115492166A (en) * | 2022-09-06 | 2022-12-20 | 中国建筑第八工程局有限公司 | Bottom plate force transmission belt at plugging wall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505696A (en) * | 2011-10-28 | 2012-06-20 | 上海建瓴工程咨询有限公司 | Support system of rear support removing type section steel-concrete double-enclosing-purlin foundation pit and construction method |
| CN111778990A (en) * | 2020-06-30 | 2020-10-16 | 上海市机械施工集团有限公司 | Permanent-temporary combined assembly type inner support system and construction method |
| CN112431208A (en) * | 2020-11-18 | 2021-03-02 | 上海二十冶建设有限公司 | Construction method for deep foundation pit supporting by adopting component type force transmission belt |
-
2021
- 2021-11-25 CN CN202111413604.5A patent/CN114032965A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505696A (en) * | 2011-10-28 | 2012-06-20 | 上海建瓴工程咨询有限公司 | Support system of rear support removing type section steel-concrete double-enclosing-purlin foundation pit and construction method |
| CN111778990A (en) * | 2020-06-30 | 2020-10-16 | 上海市机械施工集团有限公司 | Permanent-temporary combined assembly type inner support system and construction method |
| CN112431208A (en) * | 2020-11-18 | 2021-03-02 | 上海二十冶建设有限公司 | Construction method for deep foundation pit supporting by adopting component type force transmission belt |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704309A (en) * | 2022-03-07 | 2022-07-05 | 中铁第一勘察设计院集团有限公司 | Temporary supporting structure for solving conflict between medium plate shield hole boundary beam and shield in subway station |
| CN114704309B (en) * | 2022-03-07 | 2024-08-30 | 中铁第一勘察设计院集团有限公司 | Temporary supporting structure for solving conflict between shield Kong Bianliang and shield in middle plate of subway station |
| CN115492166A (en) * | 2022-09-06 | 2022-12-20 | 中国建筑第八工程局有限公司 | Bottom plate force transmission belt at plugging wall |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114032965A (en) | Force transmission belt structure of blocking wall of subway station and construction method thereof | |
| CN110983894B (en) | Prefabricated assembled concrete pavement and construction method | |
| CN105696622B (en) | A kind of prefabricated city piping lane and its construction method | |
| CN211257077U (en) | Prefabricated assembly and cast-in-place utility tunnel who mixes construction | |
| CN110552372A (en) | Superposed cable working well top plate structure and construction method thereof | |
| CN112411882A (en) | Method for building ultrahigh and oversized space inclined cylindrical column | |
| KR20090114863A (en) | Parallelly connected iron tube and construction method for underground structure using the same | |
| CN106968692B (en) | Tunnel excavation supporting structure and construction method thereof | |
| JP2004232328A (en) | Structure of half precast type arch culvert and its construction method | |
| CN114059585A (en) | Construction method of unilateral aluminum mould of subway side wall tripod | |
| CN212656260U (en) | Assembled rail top air duct structure of underground station | |
| CN112323635A (en) | Construction method for cast-in-place wet joint and bridge structure | |
| CN111519653A (en) | Modular assembly type retaining wall and construction method thereof | |
| JP7225356B2 (en) | Press bars and struts for open shield construction | |
| JP2004027609A (en) | Construction method for subterranean structure and subterranean structure | |
| CN109797657A (en) | Cast-in-situ bridge falsework system device and bridge cast-in-situ construction method | |
| CN114197526A (en) | Formwork system with vertical structure by reverse construction method and construction method | |
| CN114575370A (en) | High-low span foundation structure and construction method | |
| JP2009046942A (en) | Foundation block for retaining wall | |
| CN111502123A (en) | Inverted grouting type precast concrete column structure and construction method thereof | |
| CN112482636A (en) | Underground assembly type station cast-in-place beam formwork-free structure and construction method thereof | |
| CN115506634B (en) | Assembled platform canopy and construction method thereof | |
| CN217581421U (en) | Post-cast strip braced system | |
| CN211714178U (en) | Prefabricated reinforced concrete house frame | |
| CN212614767U (en) | City gate hole-shaped semi-fabricated lining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220211 |