阅读说明：本技术 排水箱涵施工缝施工结构及施工方法 (Drainage box culvert construction joint construction structure and construction method ) 是由 袁建伟 陈海林 邓柏松 李远祥 张鹏 姚志华 赵志阳 于 2021-07-01 设计创作，主要内容包括：一种排水箱涵施工缝施工结构及施工方法,包括下封板和上封板,下封板设置在箱涵下层预留钢筋上,上封板设置在上封板上且上封板顶部与上层预留钢筋接触；在下封板和上封板之间夹设有定位卡,定位卡上安装有止水带；上封板上方以及下封板的下方分别设有上保护层控制条和下保护层控制条,上封板、上保护层控制条以及下封板、下保护层控制条配合实现侧模封板。本发明专利采用上述结构,解决现有技术中止水带对中固定困难的问题,并同时解决预留钢筋对模板封模施工造成影响,导致模板封模不便的缺陷。(A drainage box culvert construction joint construction structure and a construction method comprise a lower sealing plate and an upper sealing plate, wherein the lower sealing plate is arranged on reserved steel bars on the lower layer of a box culvert, the upper sealing plate is arranged on the upper sealing plate, and the top of the upper sealing plate is in contact with the reserved steel bars on the upper layer; a positioning clamp is clamped between the lower sealing plate and the upper sealing plate, and a water stop is arranged on the positioning clamp; go up the shrouding top and the below of shrouding down is equipped with protective layer control strip and lower protective layer control strip respectively, goes up shrouding, last protective layer control strip and shrouding, lower protective layer control strip cooperation and realizes the side form shrouding. The structure is adopted, so that the problem that the water belt is difficult to center and fix in the prior art is solved, and the defect that the formwork sealing is inconvenient due to the influence of reserved steel bars on formwork sealing construction is overcome.)

1. The utility model provides a drainage box culvert construction joint construction structures which characterized in that: the box culvert sealing device comprises a lower sealing plate (5) and an upper sealing plate (7), wherein the lower sealing plate (5) is arranged on a reserved steel bar (10) at the lower layer of the box culvert, the upper sealing plate (7) is arranged on the upper sealing plate (7), and the top of the upper sealing plate (7) is in contact with a reserved steel bar (9) at the upper layer;

a positioning clamp (6) is clamped between the lower sealing plate (5) and the upper sealing plate (7), and a water stop (3) is arranged on the positioning clamp (6);

go up shrouding (7) top and the below of shrouding (5) down be equipped with respectively and go up protective layer control strip (8) and protective layer control strip (4) down, go up shrouding (7), last protective layer control strip (8) and shrouding (5), protective layer control strip (4) cooperation down realize the side form shrouding.

2. The drainage box culvert construction joint construction structure of claim 1, characterized in that: the lower protective layer control strip (4) and the upper protective layer control strip (8) are battens and the height of the battens is designed for the concrete protective layer.

3. The drainage box culvert construction joint construction structure of claim 1, characterized in that: the water stop (3) comprises an upper wing (601), a lower wing (602) and a clamping area (603) arranged between the upper wing (601) and the lower wing (602);

the upper wing (601) is fixed with the upper sealing plate (7) and the upper protective layer control bar (8), and the lower wing (602) is fixed with the lower protective layer control bar (4) and the lower sealing plate (5);

the water stop (3) is clamped and fixed by the clamping area (603).

4. The drainage box culvert construction joint construction structure of claim 3, characterized in that: the upper wing (601) and the lower wing (602) are respectively two, the upper sealing plate (7) and the upper protective layer control bar (8) are arranged between the two upper wings (601), and the lower protective layer control bar (4) and the lower sealing plate (5) are arranged between the two lower wings (602).

5. The drainage box culvert construction joint construction structure of claim 3, characterized in that: the part of the water stop belt (3) clamped by the clamping area (603) is a half area on one side of the middle hole of the water stop belt (3).

6. A drainage box culvert construction joint construction method based on the drainage box culvert construction joint construction structure of any one of claims 1-5, characterized by comprising the following steps:

1) carrying out box culvert internal support and template laying;

2) a lower protective layer control strip (4) is fixed on the bottom template and the inner template corresponding to the middle part of the installation position of the water stop (3);

3) a fixed lower sealing plate (5) is arranged on the bottom template and the inner template, one side of the end surface of the lower sealing plate (5) is aligned with the middle part of the water stop belt (3) and the lower protective layer control strip (4), and the other side is positioned in the area of the post-pouring box culvert (2);

4) a positioning clamp (6) and a water stop (3) are arranged on the fixed lower sealing plate (5);

5) an upper sealing plate (7) is arranged on the lower sealing plate (5), and the upper sealing plate (7) is arranged below the upper-layer reserved steel bar (9);

6) an upper protective layer control strip (8) is installed and fixed on the upper sealing plate (7) to realize die sealing;

7) sealing treatment is carried out on the positions of the upper sealing plate (7) and the upper protective layer control strip (8) through which the upper layer reserved steel bar (9) passes and the positions of the lower protective layer control strip (4) and the lower sealing plate (5) through which the lower layer reserved steel bar (10) passes through by using sealing glue;

8) and (5) pouring concrete.

7. The drainage box culvert construction joint construction method of the drainage box culvert construction joint construction structure of claim 6, wherein: lower shrouding (5) and last shrouding (7) make by the flitch, lower shrouding (5) and last shrouding (7) thickness is the same and be half of interval between upper reserved reinforcing bar (9) and lower floor reserved reinforcing bar (10).

8. The drainage box culvert construction joint construction method of the drainage box culvert construction joint construction structure of claim 6, wherein: in the step 4), the clamping area (603) of the positioning card (6) is clamped and fixed between the lower sealing plate (5) and the upper sealing plate (7), the upper wing (601) of the positioning card (6) is tightly attached to the side walls of one sides of the upper sealing plate (7) and the upper protective layer control strip (8), and the lower wing (602) of the positioning card (6) is tightly attached to the side walls of one sides of the lower protective layer control strip (4) and the lower sealing plate (5).

9. The drainage box culvert construction joint construction method of the drainage box culvert construction joint construction structure of claim 6, wherein: and in the step 6), the upper protection layer control strip (8) is installed and fixed on the upper sealing plate (7) or is installed on an outer template corresponding to the middle part of the installation position of the water stop belt (3) to realize mold sealing.

10. The drainage box culvert construction joint construction method of the drainage box culvert construction joint construction structure of claim 6, wherein: in the step 8), pouring of the cast-in-place box culvert (1) is firstly carried out, and after the cast-in-place box culvert (1) is poured, pouring of the post-cast box culvert (2) is carried out after the lower sealing plate (5), the upper sealing plate (7), the lower protective layer control strip (4) and the upper protective layer control strip (8) are removed.

Technical Field

The invention relates to the technical field of drainage box culvert construction, in particular to a drainage box culvert construction joint construction structure and a construction method.

Background

At present, a common method for drainage box culvert deformation joints and construction joints is to arrange a water stop belt in a side plate centering manner when box culverts are poured in a layered manner, or arrange a circle of water stop belt in a bottom plate, a side plate and a top plate centering manner when the box culverts are poured in a segmented manner, wherein the water stop belt plays a role in effective fastening and sealing, water seepage and damping buffering are prevented, one half of the water stop belt is buried in a pre-pouring structure, and the other half of the water stop belt is buried deeply in a post-pouring structure. In deformation joint and construction joint work progress, the waterstop centering is fixed the difficulty, leads to the waterstop off normal to warp and influences deformation joint stagnant water effect and then influences drainage box culvert construction quality, and vertical or longitudinal reinforcement need be reserved to especially construction joint general way simultaneously, leads to the construction inconvenient, leads to the reinforcing bar protective layer not enough and off normal scheduling problem when especially curb plate seal mould, therefore the side form mold sealing is difficult during construction of construction joint.

Disclosure of Invention

The invention aims to solve the technical problem of providing a drainage box culvert construction joint construction structure and a construction method, solving the problem of difficulty in centering and fixing water belts in the prior art, and simultaneously solving the defect of inconvenience in formwork sealing caused by the influence of reserved steel bars on formwork sealing construction.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a drainage box culvert construction joint construction structure comprises a lower sealing plate and an upper sealing plate, wherein the lower sealing plate is arranged on reserved steel bars on the lower layer of a box culvert, the upper sealing plate is arranged on the upper sealing plate, and the top of the upper sealing plate is in contact with the reserved steel bars on the upper layer;

a positioning clamp is clamped between the lower sealing plate and the upper sealing plate, and a water stop is arranged on the positioning clamp;

go up the shrouding top and the below of shrouding down be equipped with protective layer control strip and protective layer control strip down respectively, go up shrouding, last protective layer control strip and shrouding, protective layer control strip down cooperate and realize the side form shrouding down.

In a preferred scheme, the lower protective layer control strips and the upper protective layer control strips are battens, and the height is designed for the concrete protective layer.

In a preferred scheme, the water stop belt comprises an upper wing, a lower wing and a clamping area arranged between the upper wing and the lower wing;

the upper wing is fixed with the upper sealing plate and the upper protection layer control strip, and the lower wing is fixed with the lower protection layer control strip and the lower sealing plate;

the water stop is clamped and fixed by the clamping area.

In the preferred scheme, the number of the upper wings and the number of the lower wings are two respectively, the upper sealing plate and the upper protective layer control strip are arranged between the two upper wings, and the lower protective layer control strip and the lower sealing plate are arranged between the two lower wings.

In a preferred scheme, the part of the water stop band clamped by the clamping area is a half area on one side of a middle hole of the water stop band.

The drainage box culvert construction joint construction method based on the drainage box culvert construction joint construction structure comprises the following steps:

1) carrying out box culvert internal support and template laying;

2) fixing a lower protective layer control strip on the bottom template and the inner template corresponding to the middle part of the water stop belt mounting position;

3) a fixed lower sealing plate is arranged on the bottom template and the inner template, one side of the end surface of the lower sealing plate is ensured to be aligned with the middle part of the water stop belt and the control strip of the lower protective layer, and the other side is positioned in the post-pouring box culvert area;

4) a positioning clamp and a water stop belt are arranged on the fixed lower sealing plate;

5) an upper sealing plate is arranged on the lower sealing plate and is arranged below the reserved steel bars on the upper layer;

6) an upper protective layer control strip is fixedly arranged on the upper sealing plate to realize die sealing;

7) sealing the positions of the upper sealing plate and the upper protective layer control strip through which the upper layer reserved steel bar passes and the positions of the lower protective layer control strip and the lower sealing plate through which the lower layer reserved steel bar passes by sealant;

8) and (5) pouring concrete.

In the preferred scheme, lower shrouding and last shrouding make by the flitch, lower shrouding is the same with last shrouding thickness and is the upper strata and reserves half of interval between reinforcing bar and the lower floor reservation reinforcing bar.

In a preferred embodiment, in the step), the clamping area of the positioning card is clamped and fixed between the lower sealing plate and the upper sealing plate, the upper wing of the positioning card is tightly attached to the upper sealing plate and the side wall of one side of the upper protective layer control strip, and the lower wing of the positioning card is tightly attached to the side wall of one side of the lower protective layer control strip and the side wall of one side of the lower sealing plate.

In a preferred scheme, in the step), the upper protection layer control strip is installed and fixed on the upper sealing plate or is installed on an outer template corresponding to the middle of the installation position of the water stop belt to realize mold sealing.

In an optimal scheme, in the step 8), casting of the cast-in-place box culvert is firstly carried out, and after the cast-in-place box culvert is cast, the lower sealing plate, the upper sealing plate, the lower protective layer control strip and the upper protective layer control strip are removed, and then casting of the post-cast box culvert is carried out.

The construction structure and the construction method of the drainage box culvert construction joint provided by the invention have the following beneficial effects by adopting the structure and the method:

(1) the box culvert water stop belts are arranged in a centering way, and the offset damage in the mould sealing process is prevented;

(2) the thickness of the steel bar protection layer of the box culvert is ensured, and the bending deformation of the steel bars is avoided;

(3) the mould is sealed to box culvert movement joint department of being convenient for water earlier, improves box culvert movement joint department construction quality, improves the whole water-proof effects of drainage box culvert.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic view of construction arrangement of construction joints at a roof and side plates of a drainage box culvert.

FIG. 2 is a side view of the structure of FIG. 1 according to the present invention.

FIG. 3 is a schematic view of a positioning card according to the present invention.

In the figure: cast-in-place box culvert 1, post-cast box culvert 2, waterstop 3, lower protective layer control strip 4, lower shrouding 5, locator card 6, upper wing 601, lower wing 602, clamping area 603, upper shrouding 7, upper protective layer control strip 8, upper strata reserve reinforcing bar 9, lower floor reserve reinforcing bar 10.

Detailed Description

Example 1:

as shown in fig. 1, a construction structure of a drainage box culvert construction joint comprises a lower sealing plate 5 and an upper sealing plate 7, wherein the lower sealing plate 5 is arranged on a reserved steel bar 10 at the lower layer of a box culvert, the upper sealing plate 7 is arranged on the upper sealing plate 7, and the top of the upper sealing plate 7 is in contact with a reserved steel bar 9 at the upper layer;

a positioning clamp 6 is clamped between the lower sealing plate 5 and the upper sealing plate 7, and a water stop 3 is arranged on the positioning clamp 6;

go up 7 tops of shrouding and the below of shrouding 5 down and be equipped with protective layer control strip 8 and protective layer control strip 4 down respectively, go up shrouding 7, protective layer control strip 8 and shrouding 5, protective layer control strip 4 cooperation down and realize the side form shrouding.

In a preferred scheme, the lower protective layer control strip 4 and the upper protective layer control strip 8 are battens, and the height is designed for the concrete protective layer.

In the embodiment, the water stop band 3 is clamped and fixed by the lower sealing plate 5 and the upper sealing plate 7 which are the same in thickness in a matching manner with the positioning clamp 6, so that the centering precision of the position of the water stop band 3 and the position fixation of the water stop band 3 in the pouring process can be effectively guaranteed;

in addition, the positioning of the lower protective layer control strip 4 and the upper protective layer control strip 8 is realized through the positioning card 6, and the purpose of mold sealing is realized, so that the problem of inconvenient mold sealing caused by the stretching of the reserved steel bars in the prior art can be effectively solved.

Example 2:

as shown in fig. 3, on the basis of embodiment 1, the water stop 3 includes an upper wing 601, a lower wing 602, and a clamping area 603 disposed between the upper wing 601 and the lower wing 602;

the upper wing 601 is fixed with the upper sealing plate 7 and the upper protective layer control bar 8, and the lower wing 602 is fixed with the lower protective layer control bar 4 and the lower sealing plate 5;

the water stop 3 is clamped and fixed by the clamping area 603.

In a preferred embodiment, there are two upper wings 601 and two lower wings 602, the upper sealing plate 7 and the upper protective layer control strip 8 are disposed between the two upper wings 601, and the lower protective layer control strip 4 and the lower sealing plate 5 are disposed between the two lower wings 602.

In a preferred embodiment, the part of the water stop 3 clamped by the clamping area 603 is a half area on the side of the central hole of the water stop 3.

Example 3:

on the basis of the embodiment 2, the construction method of the drainage box culvert construction joint specifically comprises the following steps:

1) carrying out box culvert internal support and template laying;

2) fixing a lower protective layer control strip 4 on the bottom template and the inner template corresponding to the middle part of the installation position of the water stop 3;

3) a fixed lower sealing plate 5 is arranged on the bottom template and the inner template, one side of the end surface of the lower sealing plate 5 is ensured to be aligned with the middle part of the water stop belt 3 and the lower protective layer control strip 4, and the other side is positioned in the area of the post-cast box culvert 2;

4) a positioning clamp 6 and a water stop 3 are arranged on the fixed lower sealing plate 5;

5) an upper sealing plate 7 is arranged on the lower sealing plate 5, and the upper sealing plate 7 is arranged below the upper-layer reserved steel bar 9;

6) an upper protective layer control strip 8 is fixedly arranged on the upper sealing plate 7 to realize die sealing;

7) sealing the positions of the upper sealing plate 7 and the upper protective layer control strip 8 through which the upper layer reserved steel bar 9 passes and the positions of the lower protective layer control strip 4 and the lower sealing plate 5 through which the lower layer reserved steel bar 10 passes by using sealing glue;

8) and (5) pouring concrete.

In the preferred scheme, lower shrouding 5 and last shrouding 7 make by the flitch, lower shrouding 5 is the same with 7 thickness of last shrouding and is the upper strata and reserves half of interval between reinforcing bar 9 and the lower floor reservation reinforcing bar 10 to guarantee that waterstop 3 buries the intermediate position of box culvert roof or curb plate.

In a preferable embodiment, in the step 4), the clamping area 603 of the positioning card 6 is clamped and fixed between the lower sealing plate 5 and the upper sealing plate 7, the upper wing 601 of the positioning card 6 is tightly attached to the side walls of the upper sealing plate 7 and the side wall of the upper protective layer control strip 8, and the lower wing 602 of the positioning card 6 is tightly attached to the side walls of the lower protective layer control strip 4 and the side wall of the lower sealing plate 5.

In a preferable scheme, in the step 6), the upper protection layer control strip 8 is installed and fixed on the upper sealing plate 7 or is installed on an outer template corresponding to the middle of the installation position of the water stop band 3 to realize mold sealing.

In an optimal scheme, in the step 8), pouring of the cast-in-place box culvert 1 is firstly carried out, and after the cast-in-place box culvert 1 is poured, pouring of the post-cast box culvert 2 is carried out after the lower sealing plate 5, the upper sealing plate 7, the lower protective layer control strips 4 and the upper protective layer control strips 8 are removed.

The method adopted in the embodiment ensures the central position of the water stop belt 3 in the box culvert roof or side plate through the upper and lower sealing blocks with the same thickness, avoids the problem that the deviation deformation of the water stop belt influences the water stop effect of the deformation joint and further influences the construction quality of the drainage box culvert, also solves the problem that a steel bar protective layer is deviated in the mold sealing operation caused by steel bars reserved in construction joints, and solves the problem that the mold sealing of the side mold is difficult in the box culvert pouring construction process.