CN112706269B - Construction method for top plate of sealed space at top of immersed tube - Google Patents
Construction method for top plate of sealed space at top of immersed tube Download PDFInfo
- Publication number
- CN112706269B CN112706269B CN202011554221.5A CN202011554221A CN112706269B CN 112706269 B CN112706269 B CN 112706269B CN 202011554221 A CN202011554221 A CN 202011554221A CN 112706269 B CN112706269 B CN 112706269B
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- top plate
- supporting
- bottom die
- pouring
- immersed tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
- B28B23/024—Supporting means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to the field of immersed tubes, in particular to a construction method for a top plate of a sealed space at the top of an immersed tube, which comprises the following steps: s1, pouring a side wall, and embedding a connecting piece on the side wall, wherein the connecting piece is positioned at the upper part of the side wall; s2, manufacturing a support structure, and connecting the support structure with a connecting piece to enable the support structure to be located in a grid space; s3, constructing a bottom die for pouring the upper-layer top plate on the supporting structure, and supporting the bottom die by using the supporting structure; s4, constructing a top mold above the bottom mold to form a pouring space for forming the upper-layer top plate between the bottom mold and the top mold; and S5, pouring and forming an upper roof. According to the construction method for the top plate of the sealed space at the top of the immersed tube, the used materials, manufacturing and installing costs and time cost are far less than those of the erected scaffold, so that materials are saved, the corresponding construction time is shortened, and the construction cost is reduced.
Description
Technical Field
The invention relates to the field of immersed tubes, in particular to a construction method for a top plate of a sealed space at the top of an immersed tube.
Background
As shown in fig. 1, when prefabricating the immersed tube structure, in some locations, in order to reduce the gravity load on the upper portion of the immersed tube, the strength of the immersed tube is required to meet the use requirement, and the waterproof requirement is also considered, so the immersed tube top plate needs to be prefabricated into a lattice structure with at least two layers, a lattice space 3 is arranged between an upper layer top plate 1 and a lower layer top plate 2, and the side walls around the lattice space 3 and the upper layer top plate 1 and the lower layer top plate 2 are sealed with each other, so that the lattice space 3 forms a sealed space.
For the construction of the upper roof 1, because the height difference between the upper roof 1 and the lower roof 2 is large, generally, after the lower roof 2 and the surrounding side walls 4 are constructed, a scaffold is erected on the lower roof 2 to form the elevation of the upper roof 1, then a bottom mould for forming the upper roof 1 is erected on the top of the scaffold, then reinforcing steel bars are bound, a top film is placed, and then the upper roof 1 is poured.
Disclosure of Invention
The invention aims to: aiming at the problems that in the prior art, when a formwork of an upper-layer top plate 1 is erected by a scaffold, the scaffold cannot be taken out of a grid space 3 after the upper-layer top plate 1 is poured, the scaffold of the method cannot be reused, materials are wasted, the time for erecting the scaffold is long, the construction time of a immersed tube top plate is prolonged, and the construction cost is increased, the construction method for the immersed tube top sealed space top plate is provided.
In order to achieve the purpose, the invention adopts the technical scheme that:
a construction method for a top plate of a sealed space at the top of a immersed tube comprises the following steps:
s1, pouring a side wall, and embedding a connecting piece on the side wall, wherein the connecting piece is positioned at the upper part of the side wall;
s2, manufacturing a supporting structure, and connecting the supporting structure with the connecting piece to enable the supporting structure to be located in a grid space;
s3, constructing a bottom die for pouring an upper-layer top plate on the supporting structure, and supporting the bottom die by using the supporting structure;
s4, constructing a top mold above the bottom mold, and forming a pouring space for forming the upper-layer top plate between the bottom mold and the top mold;
and S5, pouring and forming the upper roof.
The application the construction method for immersed tube top confined space roof utilize pre-buried connecting piece on the lateral wall connects bearing structure to utilize bearing structure to support the die block, replace the scaffold to set up the construction method who supports the die block, and unsettled bearing structure of installing on the side wall sets up the scaffold for supporting the basis for following lower floor's roof, its used material, preparation installation cost and time cost are less than far than and set up the scaffold, and then material saving has shortened corresponding engineering time, construction cost has been reduced.
Preferably, the supporting structure is connected with the connecting piece in a detachable connection mode, and the scheme is convenient to install.
Preferably, at least one set of opposing side walls has said connectors, each said connector being connected to said support structure.
Preferably, the bottom die comprises a horizontally arranged support plate, an arch-shaped component is arranged at the bottom of the support plate, one end of the arch-shaped component is connected with one support structure, the other end of the arch-shaped component is connected with the support structure on the opposite side wall, and the arch-shaped component is in support connection with the support plate.
The middle part of the whole bottom die is in a suspended state, so that the gravity bending moment borne by the bottom die is continuously increased from the middle to two ends, the bottom die is designed to be of an upper horizontal and lower arched structure, the trend of the bottom die is met, the vertical pressure bearing capacity of the bottom die is improved, the material of the bottom die is reduced, and the cost performance of the bottom die is improved.
Preferably, the arched components are of a space truss structure, so that the structural quality of the arched components can be reduced and the construction cost can be reduced under the same strength.
Preferably, the supporting structure comprises a base, a lifting mechanism is arranged on the base, and a supporting table for supporting the bottom die is connected to the top of the lifting mechanism;
the step S3 specifically includes:
s31, constructing a bottom die for pouring an upper-layer top plate on the supporting structure;
s32, placing the bottom die on the support table;
and S33, adjusting the lifting mechanism to enable the bottom die to reach a preset height.
The position height of the supporting table is adjusted up and down by utilizing the lifting mechanism, so that the height of the bottom die can be adjusted, and the bottom die can be ensured to be accurately positioned.
Preferably, the base is of a bracket structure, the bracket structure is simple to manufacture, is stressed clearly, and has good supporting force.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the application the construction method for immersed tube top confined space roof utilize pre-buried connecting piece on the lateral wall connects bearing structure to utilize bearing structure to support the die block, replace the scaffold to set up the construction method who supports the die block, and unsettled bearing structure of installing on the side wall sets up the scaffold for supporting the basis for following lower floor's roof, its used material, preparation installation cost and time cost are less than far than and set up the scaffold, and then material saving has shortened corresponding engineering time, construction cost has been reduced.
2. The application a construction method for immersed tube top seal space roof, whole die block middle part is unsettled state, so the gravity bending moment that the die block received increases in succession from the centre to both ends, then sets up the die block into top level, the arched structure in below, accords with the trend of die block, improves the vertical compressive capacity of die block, has reduced the material of die block, has improved the price/performance ratio of die block.
3. The application discloses a construction method for immersed tube top seal space roof, bearing structure includes the base, be provided with elevating system on the base, the elevating system top is connected with and is used for supporting the brace table of die block utilizes elevating system to adjust the position height of brace table from top to bottom, and then can adjust the height of die block to can guarantee that the die block is accurate to take one's place.
Drawings
Fig. 1 is a cross-sectional view of a background art caisson.
Fig. 2 is a construction structure diagram of step S3 of a construction method for a immersed tube top sealed space roof according to the present application.
Fig. 3 is a construction structure diagram of step S4 of a construction method for a immersed tube top sealed space roof according to the present application.
Fig. 4 is a schematic construction structure diagram (bottom mold is a plate-shaped structure, and lifting mechanism is provided) of step S5 of a construction method for a top plate of a sealed space at the top of a immersed tube according to the present application.
Fig. 5 is a schematic construction structure diagram of step S5 of a construction method for a top plate of a sealed space at the top of a sinking tube according to the present application (bottom mold is arch-shaped, and there is no lifting mechanism).
Fig. 6 is a schematic construction structure diagram (bottom mold is arch-shaped structure, and lifting mechanism is provided) of step S5 of a construction method for a top plate of a sealed space at the top of a immersed tube according to the present application.
Icon: 1-upper roof; 11-bottom die; 12-top mold; 13-a support plate; 14-an arch-shaped member; 2-lower roof; 3-a grid space; 4-side wall; 41-pre-buried connecting piece; 5-a support structure; 51-a base; 52-a lifting mechanism; 53-support table.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 2 to 4, a construction method for a top plate of a sealed space at the top of a sinking tube comprises the following steps:
s1, pouring a side wall 4, and embedding a connecting piece 41 on the side wall 4 in advance, wherein the connecting piece 41 is positioned at the upper part of the side wall 4;
s2, manufacturing a support structure 5, and connecting the support structure 5 with the connecting piece 41 to enable the support structure 5 to be positioned in the grid space 3;
s3, constructing a bottom die 11 for pouring the upper-layer top plate 1 on the supporting structure 5, and supporting the bottom die 11 on the supporting structure 5;
s4, constructing a top mold 12 above the bottom mold 11, and forming a pouring space for forming the upper-layer top plate 1 between the bottom mold 11 and the top mold 12;
and S5, pouring and forming the upper-layer top plate 1.
In the above solution, the supporting structure 5 is connected with the connecting piece 41 in a detachable manner, which is convenient for installation.
On the basis, in a further preferable mode, the connecting members 41 are arranged on at least one group of the opposite side walls 4, and each connecting member 41 is connected with the supporting structure 5.
On the basis, in a further preferable mode, the base 51 is of a bracket structure, the bracket structure is simple to manufacture, is stressed clearly, and has good supporting force.
The application a construction method for immersed tube top confined space roof, utilize pre-buried connecting piece 41 comes connection support structure 5 on side wall 4 to utilize support structure 5 to support die block 11, replace the scaffold to set up the construction method who supports die block 11, and unsettled mounting is for setting up the scaffold for supporting the basis with lower floor's roof 2 for support structure 5 on side wall 4, its used material, preparation installation cost and time cost are less than far than and set up the scaffold, and then material saving, corresponding engineering time has been shortened, construction cost is reduced.
Example 2
As shown in fig. 5 and 6, in the construction method for the top plate of the sealed space at the top of the immersed tube according to the embodiment, the middle portion of the bottom die 11 is in a suspended state, so that the gravity bending moment applied to the bottom die 11 continuously increases from the middle to the two ends, and the difference between the solution of the embodiment and the embodiment 1 is as follows: die block 11 includes the backup pad 13 of level setting, backup pad 13 bottom is provided with arch part 14, the one end of arch part 14 with one bearing structure 5 is connected, the other end with relative side wall 4 on bearing structure 5 is connected, arch part 14 with backup pad 13 supports and is connected.
In addition, in a more preferable mode, the arch member 14 has a space truss structure, so that the structural quality of the arch member 14 can be reduced and the construction cost can be reduced under the same strength.
The beneficial effects of this embodiment: the bottom die 11 is arranged to be of an upper horizontal and lower arched structure, so that the trend of the bottom die 11 is met, the vertical pressure capacity of the bottom die 11 is improved, the material of the bottom die 11 is reduced, and the cost performance of the bottom die 11 is improved.
Example 3
As shown in fig. 4 and 6, the construction method for the top plate of the sealed space at the top of the immersed tube according to the embodiment is different from that of embodiment 1 or 2 in that: the supporting structure 5 comprises a base 51, a lifting mechanism 52 is arranged on the base 51, and a supporting platform 53 for supporting the bottom die 11 is connected to the top of the lifting mechanism 52;
step S3, constructing a bottom die 11 for pouring the upper roof 1 on the supporting structure 5, and supporting the bottom die 11 on the supporting structure 5, specifically:
s31, constructing a bottom die 11 for pouring the upper-layer top plate 1 on the supporting structure 5;
s32, placing the bottom die 11 on the support platform 53;
and S33, adjusting the lifting mechanism 52 to enable the bottom die 11 to reach a preset height.
The beneficial effects of this embodiment: the lifting mechanism 52 is used to adjust the height of the support platform 53 up and down, so as to adjust the height of the bottom mold 11, thereby ensuring that the bottom mold 11 is accurately positioned.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A construction method for a top plate of a sealed space at the top of a immersed tube is characterized by comprising the following steps:
s1, pouring a side wall (4), and pre-burying a connecting piece (41) on the side wall (4), wherein the connecting piece (41) is positioned at the upper part of the side wall (4);
s2, manufacturing a supporting structure (5), and connecting the supporting structure (5) with the connecting piece (41) to enable the supporting structure (5) to be located in the grid space (3);
s3, constructing a bottom die (11) for pouring the upper roof (1) on the supporting structure (5), and supporting the bottom die (11) on the supporting structure (5);
s4, constructing a top mold (12) above the bottom mold (11) to form a pouring space for forming the upper-layer top plate (1) between the bottom mold (11) and the top mold (12);
s5, pouring and forming the upper-layer top plate (1);
the supporting structure (5) comprises a base (51), a lifting mechanism (52) is arranged on the base (51), and a supporting table (53) for supporting the bottom die (11) is connected to the top of the lifting mechanism (52);
the step S3 specifically includes:
s31, constructing a bottom die (11) for pouring the upper-layer top plate (1) on the supporting structure (5);
s32, placing the bottom die (11) on the support table (53);
and S33, adjusting the lifting mechanism (52) to enable the bottom die (11) to reach a preset height.
2. A method of constructing a top deck for a sealed space at the top of a immersed tube according to claim 1, wherein the supporting structure (5) is detachably connected to the connecting member (41).
3. A method according to claim 1, wherein said connectors (41) are provided on at least one set of opposing side walls (4), each of said connectors (41) being connected to said support structure (5).
4. The construction method for the top plate of the sealed space at the top of the immersed tube according to claim 3, wherein the bottom die (11) comprises a horizontally arranged support plate (13), an arch member (14) is arranged at the bottom of the support plate (13), one end of the arch member (14) is connected with one support structure (5), the other end of the arch member is connected with the support structure (5) on the opposite side wall (4), and the arch member (14) is in supporting connection with the support plate (13).
5. A method of constructing a top deck for a sealed space at the top of a immersed tube according to claim 4, wherein said arch member (14) is a space truss structure.
6. A method of constructing a top plate for a sealed space at the top of a sinking tube in accordance with claim 1, wherein the base (51) is of corbel construction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011554221.5A CN112706269B (en) | 2020-12-24 | 2020-12-24 | Construction method for top plate of sealed space at top of immersed tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011554221.5A CN112706269B (en) | 2020-12-24 | 2020-12-24 | Construction method for top plate of sealed space at top of immersed tube |
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| CN112706269A CN112706269A (en) | 2021-04-27 |
| CN112706269B true CN112706269B (en) | 2022-05-27 |
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Citations (3)
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| CN202441058U (en) * | 2012-02-22 | 2012-09-19 | 王志成 | Arched support of building |
| CN202627506U (en) * | 2012-05-25 | 2012-12-26 | 中国葛洲坝集团股份有限公司 | Formwork for cast-in-place concrete connecting beams |
| CN207314841U (en) * | 2016-12-07 | 2018-05-04 | 山西省第三建筑工程公司 | Sunk type closes small space one-time-concreting forming panel support system |
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| JPH112099A (en) * | 1997-06-10 | 1999-01-06 | Saga Kogyo Kk | Gable frame structure and method for forming tunnel covering |
| US20110220773A1 (en) * | 2008-10-28 | 2011-09-15 | Carlos Fradera Pellicer | Method for the Manufacture of Prefabricated Reinforced Mortar Panels and Slabs |
| CN205369978U (en) * | 2015-12-28 | 2016-07-06 | 中民筑友有限公司 | Prefabricated plate support frame |
| CN110714480A (en) * | 2018-07-13 | 2020-01-21 | 平昌县喜神小学 | Construction method of pipe gallery |
| CN111335166A (en) * | 2020-03-09 | 2020-06-26 | 浙江交工集团股份有限公司 | Construction method using self-bearing structure as temporary support |
| CN111577325A (en) * | 2020-04-20 | 2020-08-25 | 中铁十二局集团有限公司 | Construction method for arch bridge type arc middle plate of underground excavation station |
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2020
- 2020-12-24 CN CN202011554221.5A patent/CN112706269B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202441058U (en) * | 2012-02-22 | 2012-09-19 | 王志成 | Arched support of building |
| CN202627506U (en) * | 2012-05-25 | 2012-12-26 | 中国葛洲坝集团股份有限公司 | Formwork for cast-in-place concrete connecting beams |
| CN207314841U (en) * | 2016-12-07 | 2018-05-04 | 山西省第三建筑工程公司 | Sunk type closes small space one-time-concreting forming panel support system |
Non-Patent Citations (1)
| Title |
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| 《沉管隧道主结构设计优化方法》;林巍等著;《沉管隧道主结构设计优化方法》;中国港湾建设;20201031;第40卷(第10期);第28-35页 * |
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