阅读说明：本技术 一种大型预制构件预应力施工减阻水槽及使用方法 (Large-scale prefabricated part prestress construction drag reduction water tank and use method ) 是由 刘忠友 王晋 俞武华 张文兵 赵宇 于 2019-09-18 设计创作，主要内容包括：本发明涉及交通施工技术领域,特指一种大型预制构件预应力施工减阻水槽,包括设于减阻水槽顶部的顶板组件、设于减阻水槽两侧的侧板组件一、设于减阻水槽两端的侧板组件二以及设于减阻水槽底部的底板组件,所述顶板组件、侧板组件一、侧板组件二与底板组件固定连接,且成型设有可容纳并足以漂浮起沉管隧道管节的密封水槽。本发明通过顶板组件、两侧的侧板组件一、两端的侧板组件二以及底板组件固定连接形成一个足以漂浮起沉管隧道管节的密封水槽,在施加沉管隧道管节预应力时借助于水的浮力,使沉管隧道管节在密封水槽中处于即将漂浮状态,此时,磨擦阻力可忽略不计,施加的预应力可有效传递到沉管隧道管节的任何部位,达到施加预应力的理想状态。(The invention relates to the technical field of traffic construction, in particular to a large-scale prefabricated part prestress construction drag reduction water tank which comprises a top plate assembly, side plate assemblies and a bottom plate assembly, wherein the top plate assembly is arranged at the top of the drag reduction water tank, the side plate assemblies are arranged on two sides of the drag reduction water tank, the side plate assemblies are arranged at two ends of the drag reduction water tank, the bottom plate assembly is arranged at the bottom of the drag reduction water tank, the top plate assembly, the side plate assemblies and the side plate assemblies are fixedly connected with the bottom plate assembly, and a sealed water tank which can contain and can float up a. The top plate assembly, the side plate assemblies I on two sides, the side plate assemblies II on two ends and the bottom plate assembly are fixedly connected to form a sealed water tank which is enough for floating the immersed tube tunnel pipe section, when the prestressing force of the immersed tube tunnel pipe section is applied, the immersed tube tunnel pipe section is in a state of floating in the sealed water tank by means of the buoyancy of water, at the moment, the friction resistance is negligible, and the applied prestressing force can be effectively transmitted to any part of the immersed tube tunnel pipe section, so that the ideal state of applying the prestressing force is achieved.)

1. The utility model provides a large-scale prefabricated component prestressing force construction drag reduction basin which characterized in that: including the roof subassembly of locating drag reduction basin top, locate the curb plate subassembly one of drag reduction basin both sides, locate the curb plate subassembly two at drag reduction basin both ends and locate the bottom plate subassembly of drag reduction basin bottom, roof subassembly, curb plate subassembly one, curb plate subassembly two and bottom plate subassembly fixed connection, and the shaping is equipped with the sealed basin that can hold and be sufficient to float immersed tube tunnel tube coupling (5).

2. The large-scale prefabricated part prestress construction drag reduction water tank as claimed in claim 1, wherein: the top plate assembly comprises a pull rod (12), and two ends of the pull rod (12) are fixedly connected with the side plate assemblies on two sides of the drag reduction water tank through pull rod nuts (9) respectively.

3. The large-scale prefabricated part prestress construction drag reduction water tank as claimed in claim 1, wherein: the first side plate assembly comprises a template panel (6), a template transverse beam (7) and a template back frame beam (8), and the template panel (6), the template transverse beam (7) and the template back frame beam (8) are fixedly connected through bolts.

4. The large-scale prefabricated part prestress construction drag reduction water tank as claimed in claim 3, wherein: a limiting pipe barrel (10) is arranged between the upper portion of the template panel (6) and the upper portion of the immersed tube tunnel pipe joint (5), a sealing end side plate (14) is arranged between the lower portion of the template panel (6) and the lower portion of the immersed tube tunnel pipe joint (5), and the sealing end side plate (14) is connected with the immersed tube tunnel pipe joint (5) in a water leakage prevention mode through a P-shaped rubber water stop belt (11).

5. The large-scale prefabricated part prestress construction drag reduction water tank as claimed in claim 1, wherein: the side plate assembly II comprises sealing templates arranged at two ends of the drag reduction water tank, and the sealing templates are fixedly and hermetically connected with the side plate assembly I and the bottom plate assembly respectively and are connected with the side plate assembly I in a water leakage prevention mode through a P-type rubber water stop (11).

6. The large-scale prefabricated part prestress construction drag reduction water tank as claimed in claim 1, wherein: the bottom plate assembly comprises a terrace (1), supporting section steel (3) and a bottom steel die (4), the supporting section steel (3) is fixed at the top of the terrace (1), the bottom steel die (4) is fixed at the top of the supporting section steel (3), and two sides of the terrace (1) are respectively fixedly connected with side plate assemblies arranged on two sides of the drag reduction water tank.

7. The large-scale prefabricated part prestress construction drag reduction water tank as claimed in claim 6, wherein: the two sides of the terrace (1) are respectively provided with a terrace beam (2), and the terrace beam (2) and the side plate components on the two sides of the resistance-reducing water tank are arranged in a guiding and limiting way.

8. The large-scale prefabricated part prestress construction drag reduction water tank as claimed in claim 6, wherein: the terrace (1) is connected with the side plate assemblies on the two sides of the drag reduction water tank in a water leakage prevention mode through the P-shaped rubber water stop (11).

9. The large-scale prefabricated part prestress construction drag reduction water tank as claimed in claim 6, wherein: an end bottom baffle (13) is arranged between the terrace (1) and the immersed tube tunnel pipe joint (5), and the end bottom baffle (13) is connected with the immersed tube tunnel pipe joint (5) through a P-shaped rubber water stop (11) to prevent water leakage.

10. The large-scale prefabricated part prestress construction drag reduction water tank according to any one of claims 1 to 9, wherein the use method comprises the following steps:

1) after the whole pipe joint is completely prefabricated and the strength reaches the prestress application strength, firstly removing a bottom steel die (4) and a support section steel (3) within the range of 1.5 meters from two ends of the pipe joint, then fixing an end bottom baffle (13) connected with a P-shaped rubber water stop (11) on the floor (1), completing the installation of a bottom plate component at the bottom of the drag reduction water tank, and enabling the immersed tunnel pipe joint (5) to be in water-leakage-proof connection with the end bottom baffle (13) through the P-shaped rubber water stop (11);

2) fixedly connecting a template panel (6), a template transverse beam (7) and a template back frame beam (8) through bolts to complete the installation of a side plate assembly I on the side part of the anti-drag water tank, and fixing an end-sealed side plate (14) on the template panel (6);

3) the side plate assembly I is lifted by a crane and is arranged on two sides of the immersed tunnel pipe joint (5) and is closely attached to a terrace beam (2) on a terrace (1) in a limiting manner, the upper part of the template panel (6) is separated from the upper part of the immersed tunnel pipe joint (5) through a limiting pipe barrel (10), and the immersed tunnel pipe joint (5) is connected with the end-sealed side plate (14) in a water leakage-proof manner through a P-shaped rubber water stop belt (11);

4) the side plate component II is lifted by a crane and placed at two ends of a immersed tube tunnel pipe joint (5), and is fixedly, hermetically and fixedly connected with the side plate component I and the bottom plate component and is in water leakage prevention connection through a P-type rubber water stop (11);

5) the side plate assemblies on two sides are tensioned and fixedly connected under the action of a pull rod nut (9) through a pull rod (12) to play a role in reinforcing the upper parts of the side plate assemblies;

6) injecting water into a gap between the template panel (6) and the immersed tube tunnel pipe joint (5), wherein the height of the injected water is calculated in advance and is determined on the basis that the buoyancy of the water is close to the gravity of the immersed tube tunnel pipe joint (5);

7) when the immersed tunnel pipe section (5) is in a state of going to float, prestress is applied to the immersed tunnel pipe section (5);

8) and after the prestress is applied, emptying the water, and dismantling the top plate assembly, the side plate assembly I and the side plate assembly II.

Technical Field

The invention relates to the technical field of traffic construction, in particular to a large prefabricated part prestress construction drag reduction water tank and a using method thereof.

Background

With the development of national science and technology, large and ultra-large immersed tube tunnels are continuously adopted in cross-sea bridge engineering, the prefabricated reinforced concrete pipe joints of the large and ultra-large immersed tube tunnels are about 180 meters long and weigh 6-7 ten thousand tons, the pipe joints are generally designed into a post-tensioned prestressed box type structure, and the pipe joints are generally prefabricated in sections due to large length and then are combined by applying prestress. In the process of applying prestress, because the pipe joint has heavy weight and large friction resistance with a prefabricated site, the applied prestress cannot completely act on the pipe joint due to the friction resistance, when the friction resistance disappears (in a floating state), the pipe joint contracts under the prestress of the steel bars, and the originally applied prestress cannot reach a design expected value after the contraction, so that the normal use and the service life of the pipe joint are influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a large-scale prefabricated part prestress construction drag reduction water tank and a using method thereof.

In order to achieve the purpose, the technical scheme applied by the invention is as follows:

the utility model provides a large-scale prefabricated component prestressing force construction drag reduction basin, is including the roof subassembly of locating drag reduction basin top, locate the curb plate subassembly one of drag reduction basin both sides, locate the curb plate subassembly two at drag reduction basin both ends and locate the bottom plate subassembly of drag reduction basin bottom, roof subassembly, curb plate subassembly one, curb plate subassembly two and bottom plate subassembly fixed connection, and the shaping is equipped with the sealed basin that can hold and be sufficient in order to float immersed tube tunnel tube coupling.

Furthermore, the top plate assembly comprises a pull rod, and two ends of the pull rod are fixedly connected with the side plate assemblies on two sides of the drag reduction water tank through pull rod nuts respectively.

Furthermore, the first side plate assembly comprises a template panel, a template transverse beam and a template back frame beam, and the template panel, the template transverse beam and the template back frame beam are fixedly connected through bolts.

Furthermore, a limiting pipe barrel is arranged between the upper portion of the template panel and the upper portion of the immersed tube tunnel pipe joint, a sealing end side plate is arranged between the lower portion of the template panel and the lower portion of the immersed tube tunnel pipe joint, and the sealing end side plate is connected with the immersed tube tunnel pipe joint in a water leakage prevention mode through a P-shaped rubber water stop.

And the side plate assembly II comprises sealing templates arranged at two ends of the drag reduction water tank, and the sealing templates are fixedly and hermetically connected with the side plate assembly I and the bottom plate assembly respectively and are connected with the side plate assembly I in a water leakage prevention mode through a P-type rubber water stop.

Further, the bottom plate subassembly includes the terrace, supports shaped steel and end steel mould, supports the top that shaped steel is fixed in the terrace, and end steel mould is fixed in the top that supports shaped steel, the both sides of terrace respectively with locate the curb plate subassembly fixed connection of drag reduction basin both sides.

Further, the both sides of terrace are equipped with the terrace roof beam respectively, and the terrace roof beam is spacing with the curb plate subassembly direction of drag reduction basin both sides.

Furthermore, the terrace is connected with the first side plate assembly on two sides of the drag reduction water tank through a P-shaped rubber water stop belt for preventing water leakage.

Furthermore, an end bottom baffle is arranged between the terrace and the immersed tube tunnel pipe joint, and the end bottom baffle is connected with the immersed tube tunnel pipe joint through a P-shaped rubber water stop for preventing water leakage.

A large-scale prefabricated component prestress construction drag reduction water tank and a using method thereof comprise the following steps:

1) after the whole pipe joint is completely prefabricated and the strength reaches the prestress application strength, firstly removing a bottom steel die and supporting section steel within the range of 1.5 meters from two ends of the pipe joint, then fixing an end bottom baffle plate connected with a P-type rubber waterstop on a terrace, completing the installation of a bottom plate assembly at the bottom of the drag reduction water tank, and enabling the immersed tunnel pipe joint to be in leakproof connection with the end bottom baffle plate through the P-type rubber waterstop;

2) fixedly connecting a template panel, a template transverse beam and a template back frame beam through bolts to complete installation of a side plate assembly I on the side part of the anti-drag water tank, and fixing an end-capped side plate on the template panel;

3) the side plate assembly I is lifted by a crane and is arranged on two sides of the immersed tunnel pipe section and is closely attached to a terrace beam on a terrace in a limiting way, the upper part of the template panel is separated from the upper part of the immersed tunnel pipe section by a limiting pipe barrel, and the immersed tunnel pipe section is connected with the end-sealing side plate in a water leakage-proof way by a P-type rubber water stop belt;

4) the side plate assembly II is lifted by a crane and placed at two ends of a immersed tube tunnel pipe joint, is fixedly and hermetically connected with the side plate assembly I and the bottom plate assembly, and is connected with the side plate assembly I and the bottom plate assembly in a water leakage-proof manner through a P-type rubber water stop;

5) the side plate assemblies on two sides are tensioned and fixedly connected through the pull rod under the action of the pull rod nut to play a role in reinforcing the upper parts of the side plate assemblies;

6) injecting water into a gap between the template panel and the immersed tube tunnel pipe joint, wherein the height of the injected water is calculated in advance and is determined on the basis that the buoyancy of the water is close to the gravity of the immersed tube tunnel pipe joint;

7) when the immersed tunnel pipe section is in a state of about to float, applying prestress to the immersed tunnel pipe section;

8) and after the prestress is applied, emptying the water, and dismantling the top plate assembly, the side plate assembly I and the side plate assembly II.

The invention has the beneficial effects that:

the invention adopts the structure arrangement, a sealing water tank which is enough for floating the immersed tube tunnel pipe section is formed by fixedly connecting the top plate assembly, the side plate assemblies I at two sides, the side plate assemblies II at two ends and the bottom plate assembly, when the prestressing force of the immersed tube tunnel pipe section is applied, the immersed tube tunnel pipe section is in a state of floating in the sealing water tank by means of the buoyancy of water, at the moment, the friction resistance is negligible, and the applied prestressing force can be effectively transmitted to any part of the immersed tube tunnel pipe section, thereby achieving the ideal state of applying the prestressing force.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a side view of the overall structure of the present invention;

FIG. 3 is an enlarged view of the location C in FIG. 2;

FIG. 4 is an enlarged view of the location D in FIG. 2;

FIG. 5 is a top view of the overall structure of the present invention;

FIG. 6 is an enlarged view of the E position in FIG. 5;

FIG. 7 is a sectional view taken along line A-A of FIG. 1;

FIG. 8 is an enlarged view of the location F in FIG. 7;

FIG. 9 is a sectional view taken at the position B-B in FIG. 2;

FIG. 10 is an enlarged view of the position G in FIG. 9;

fig. 11 is an enlarged view of the position H in fig. 9.

1. A terrace; 2. a terrace beam; 3. supporting the section steel; 4. a bottom steel die; 5. sinking a pipe section of the tunnel; 6. a template panel; 7. a template transverse beam; 8. a template back frame beam; 9. a draw rod nut; 10. a limiting pipe barrel; a P-type rubber waterstop; 12. a pull rod; 13. an end bottom baffle; 14. and end sealing the side plates.

Detailed Description

The technical solution of the present invention is described below with reference to the accompanying drawings and examples.

As shown in fig. 1 to 11, the large-scale prefabricated part prestress anti-drag water tank of the invention comprises a top plate assembly arranged at the top of the anti-drag water tank, a first side plate assembly arranged at two sides of the anti-drag water tank, a second side plate assembly arranged at two ends of the anti-drag water tank, and a bottom plate assembly arranged at the bottom of the anti-drag water tank, wherein the top plate assembly, the first side plate assembly, the second side plate assembly and the bottom plate assembly are fixedly connected, and a sealed water tank capable of accommodating and sufficiently floating up a sinking pipe tunnel pipe joint 5 is formed. By adopting the structure, a sealed water tank which is enough for floating the immersed tube tunnel pipe section 5 is formed by fixedly connecting the top plate assembly, the side plate assemblies I at two sides, the side plate assemblies II at two ends and the bottom plate assembly, when the prestress of the immersed tube tunnel pipe section 5 is applied, the immersed tube tunnel pipe section 5 is in a state of being about to float in the sealed water tank by means of the buoyancy of water, at the moment, the friction resistance is negligible, and the applied prestress can be effectively transmitted to any part of the immersed tube tunnel pipe section 5, so that the ideal state of applying the prestress is achieved.

More specifically, the top plate assembly comprises a pull rod 12, and two ends of the pull rod 12 are fixedly connected with the side plate assemblies on two sides of the drag reduction water tank through pull rod nuts 9 respectively. By adopting the structure, the side plate assemblies on two sides of the drag reduction water tank are fixedly connected through the pull rod 12, so that the reinforcing and fixing effects between the side plate assemblies on two sides of the drag reduction water tank are realized, and the crane hoisting operation is facilitated.

More specifically, the first side plate assembly comprises a formwork panel 6, a formwork transverse beam 7 and a formwork back frame beam 8, and the formwork panel 6, the formwork transverse beam 7 and the formwork back frame beam 8 are fixedly connected through bolts. By adopting the structure, the template panel 6, the template transverse beam 7 and the template back frame beam 8 are fixedly connected through bolts to form a side plate assembly I on two sides of the anti-drag water tank, and in practical application, the template transverse beam 7 and the template back frame beam 8 play a role of reinforcing ribs of the template panel 6.

More specifically, a limiting pipe barrel 10 is arranged between the upper part of the template panel 6 and the upper part of the immersed tunnel pipe section 5, a sealing end side plate 14 is arranged between the lower part of the template panel 6 and the lower part of the immersed tunnel pipe section 5, and the sealing end side plate 14 is connected with the immersed tunnel pipe section 5 in a water leakage-proof manner through a P-type rubber water stop belt 11. By adopting the structure, the template panel 6 and the immersed tube tunnel pipe section 5 are arranged at intervals through the limiting pipe barrel 10, so that the later stage water injection process is facilitated. In practical application, the end-sealing side plate 14 is used for positioning the side face of the end part of the immersed tunnel pipe section 5, and a water leakage preventing function between the end-sealing side plate 14 and the immersed tunnel pipe section 5 is achieved through the P-type rubber water stop band 11.

More specifically, the side plate assembly II comprises sealing templates arranged at two ends of the drag reduction water tank, and the sealing templates are fixedly and hermetically connected with the side plate assembly I and the bottom plate assembly respectively and are connected with the side plate assembly I in a water leakage prevention mode through a P-type rubber water stop belt 11. By adopting the structure, the side plate assemblies II at two ends of the drag reduction water tank are formed by the sealing template and are respectively fixedly and hermetically connected with the side plate assemblies I and the bottom plate assembly, and the water leakage prevention function between the sealing template and the side plate assemblies I and between the sealing template and the bottom plate assembly is realized through the P-type rubber water stop belt 11.

More specifically, the bottom plate subassembly includes terrace 1, support shaped steel 3 and end steel mould 4, supports shaped steel 3 and is fixed in the top of terrace 1, and end steel mould 4 is fixed in the top of supporting shaped steel 3, the both sides of terrace 1 respectively with locate the curb plate subassembly fixed connection of drag reduction basin both sides. By adopting the structure, the floor 1, the support section steel 3 and the bottom steel die 4 form the bottom plate assembly at the bottom of the drag reduction water tank, in practical application, the support section steel 3 plays a role in supporting the bottom steel die 4, the bottom steel die 4 is designed in a plane, and the friction force can be reduced when the immersed tube tunnel pipe section 5 is arranged on the bottom steel die 4.

More specifically, terrace beam 2 is equipped with respectively in the both sides of terrace 1, terrace beam 2 and the spacing setting of curb plate subassembly direction of drag reduction basin both sides. Adopt such structure setting, realize leading spacingly to the curb plate subassembly of drag reduction basin both sides through terrace roof beam 2, it is more convenient during the installation. In practical application, terrace beam 2 is the protruding structure of terrace 1 both sides, during the installation, when lifting the curb plate subassembly of drag reduction basin both sides to terrace 1, pastes the tight installation with the inner wall of terrace beam 2 with the curb plate subassembly of drag reduction basin both sides.

More specifically, the terrace 1 is connected with the first side plate assembly on two sides of the drag reduction water tank in a water leakage prevention manner through a P-type rubber water stop belt 11. Adopt such structure setting, play the leak protection water effect between the curb plate subassembly of terrace 1 and drag reduction basin both sides through P type rubber waterstop 11.

More specifically, an end bottom baffle 13 is arranged between the terrace 1 and the immersed tunnel pipe section 5, and the end bottom baffle 13 is connected with the immersed tunnel pipe section 5 through a P-type rubber water stop 11 for preventing water leakage. By adopting the structure, the bottom baffle 13 of the end head plays a role in positioning the bottom surface of the end part of the immersed tunnel pipe joint 5, and the P-shaped rubber water stop band 11 plays a role in preventing water leakage between the bottom baffle 13 of the end head and the immersed tunnel pipe joint 5.

A large-scale prefabricated part prestress resistance-reducing water tank and a using method thereof comprise the following steps:

1) after the whole pipe joint is completely prefabricated and the strength reaches the prestress application strength, firstly removing a bottom steel mould 4 and a support section steel 3 within the range of 1.5 meters from two ends of the pipe joint, then fixing an end bottom baffle 13 connected with a P-type rubber water stop 11 on the floor 1, completing the installation of a bottom plate assembly at the bottom of the drag reduction water tank, and enabling the immersed tunnel pipe joint 5 and the end bottom baffle 13 to be in water leakage prevention connection through the P-type rubber water stop 11;

2) fixedly connecting a template panel 6, a template transverse beam 7 and a template back frame beam 8 through bolts to complete the installation of a side plate assembly I on the side part of the anti-drag water tank, and fixing a sealing end side plate 14 on the template panel 6;

3) hoisting the side plate assembly I by a crane, placing the side plate assembly I on two sides of the immersed tunnel pipe section 5, limiting and tightly attaching the side plate assembly I to a terrace beam 2 on a terrace 1, spacing the upper part of the template panel 6 from the upper part of the immersed tunnel pipe section 5 by a limiting pipe barrel 10, and enabling the immersed tunnel pipe section 5 to be in water-leakage-proof connection with the end-sealed side plate 14 by a P-type rubber water stop belt 11;

4) the side plate component II is lifted by a crane and placed at two ends of the immersed tunnel pipe joint 5, is fixedly and hermetically connected with the side plate component I and the bottom plate component, and is connected with the side plate component I in a water leakage-proof manner through a P-type rubber water stop belt 11;

5) the side plate assemblies on two sides are tensioned and fixedly connected through the pull rod 12 under the action of the pull rod nut 9 to play a role in reinforcing the upper parts of the side plate assemblies;

6) injecting water into a gap between the template panel 6 and the immersed tube tunnel pipe section 5, wherein the height of the injected water is calculated in advance and is determined on the basis that the buoyancy of the water is close to the gravity of the immersed tube tunnel pipe section 5;

7) when the immersed tunnel pipe section 5 is in a state of floating, applying prestress to the immersed tunnel pipe section 5;

8) and after the prestress is applied, emptying the water, and dismantling the top plate assembly, the side plate assembly I and the side plate assembly II.

While the embodiments of the present invention have been described, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the present invention as defined by the appended claims.