CN210599025U - Reverse construction seam at joint in underground excavation subway station - Google Patents
Reverse construction seam at joint in underground excavation subway station Download PDFInfo
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- CN210599025U CN210599025U CN201921567933.3U CN201921567933U CN210599025U CN 210599025 U CN210599025 U CN 210599025U CN 201921567933 U CN201921567933 U CN 201921567933U CN 210599025 U CN210599025 U CN 210599025U
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Abstract
The utility model provides a reverse construction joint of joint department in secretly digging subway station relates to subway building engineering technical field, has solved the poor technical problem of construction joint waterproof performance. The cross section of the construction joint is of a non-planar structure, at least one water-blocking part is arranged along the width direction, and water seepage is blocked by the water-blocking part; caulking glue is coated on the surface of the construction joint; the surface of the construction joint is also provided with a grouting pipe; the construction joint is of a multi-stage step structure, and the water-resisting part is of each stage of step. The utility model is used for a can improve from doing construction joint in reverse of waterproof ability.
Description
Technical Field
The utility model belongs to the technical field of subway building engineering technique and specifically relates to a secretly dig reverse construction seam of subway station middle joint department is related to.
Background
With the development of urban traffic, subways become an indispensable part of the urban traffic, various rail traffic lines of the subways are arranged in a staggered mode to cover every corner of a city, and rail traffic transfer stations undoubtedly become hubs of the various traffic lines.
The hole pile method is a main construction method for underground excavation of a subway station at present, and for an underground double-layer underground excavation subway station, the construction procedures are as follows: after preliminary bracing of the arch part is completed, downwards excavating to the position of a station middle plate, sequentially constructing a middle plate structure, a negative first-layer side wall and a second arch part lining, then downwards excavating to a designed elevation, and then constructing a bottom plate and a negative second-layer structure side wall, wherein a longitudinally through reverse seam exists at the connecting part of the negative second-layer side wall and the poured middle plate.
The applicant has found that the prior art has at least the following technical problems:
at present, backfill construction is mostly carried out on reverse construction joints in a horizontal joint section mode, side walls are poured from bottom to top, the construction joints formed by the method not only easily cause that concrete pouring at the joints is difficult to compact, but also cause that gaps at the construction joints are enlarged due to the action of gravity, and therefore the water resistance and the durability of the structure are influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reverse construction joint of joint department in secretly digging subway station to solve the poor technical problem of construction joint waterproof performance who exists among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a reverse construction joint at the joint in the underground excavation subway station, the section of the construction joint is a non-planar structure, and at least one water-blocking part is arranged along the width direction, and the water seepage is blocked by the water-blocking part; caulking glue is coated on the surface of the construction joint; and the surface of the construction joint is also provided with a grouting pipe.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
As a further improvement, the construction joint is a multi-step structure, and the water-blocking part is every step.
As a further improvement, the utility model discloses a two adjacent stages the connection face between the step is vertical face or inclined plane.
As a further improvement of the utility model, the height and/or width of the step of each stage are the same or different.
As a further improvement of the utility model, the number of steps is tertiary.
As a further improvement, the step is close to the outside of the side wall and is lower than the step close to the inside of the side wall.
As a further improvement of the utility model, the construction joint includes that at least one semi-circular arc that upwards arches is protruding, the water-stop part is every arch.
As a further improvement, the surface of the construction joint is a triangular or trapezoidal sawtooth structure, and the water-blocking part is each sawtooth.
As a further improvement, the water-blocking part of the construction joint is composed of one or more of a step structure, an inclined plane structure, a sawtooth structure and a protruding structure.
As a further improvement of the utility model, the construction joint is coated with caulking glue on the surface.
As a further improvement of the utility model, the thickness of the caulked joint glue after being formed is 8-10 mm.
As the utility model discloses a further improvement, the quantity of slip casting pipe is an at least, all follows the construction joint leads to long direction setting, all the slip casting pipe is all fixed through the fastener the construction joint is on the surface.
As a further improvement of the utility model, the number of the grouting pipes is one, and the grouting pipes are arranged on the center line of the construction joint in the width direction; or the number of the grouting pipes is at least two, and the grouting pipes are uniformly distributed along the width direction of the construction joint.
As a further improvement, the utility model discloses an follow adjacent two that slip casting pipe length direction set up distance between the fastener is 20cm ~ 60 cm.
As a further improvement, the maximum height difference of the upper step of the construction joint is 200 mm.
As the utility model discloses a further improvement, the quantity of step is the tertiary, and first order step width is the same with third level step width, and second level step width is greater than first order step width, and first order step width is 150mm, and second level step width is 300 or 500 mm.
Compared with the prior art, the utility model following beneficial effect has:
the utility model provides a reverse construction joint of joint department in undercut subway station, through setting the section with the construction joint to nonplanar structure, the water-blocking portion that can block the infiltration has in the nonplanar structure, through set up the caulking glue on the step surface, through pouring concrete in the construction joint of completion back through the slip casting pipe to formation at the side wall, triple measure is in order to improve reverse construction joint's waterproof ability, the setting of slip casting pipe can also improve the closely knit degree of construction joint department concrete, it is inboard not only to have prevented more effectively that the groundwater in the outside from passing through the construction joint infiltration, construction joint department concrete placement's from water-proof effects has been improved, and it reaches the interior effect of beauty of concrete to have still improved construction joint concrete placement quality greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a former embodiment of the reverse construction joint construction at the joint in the underground excavated subway station of the present invention;
FIG. 2 is a schematic view of the construction of FIG. 1 after caulking is applied to the construction joint and a grout pipe is installed;
FIG. 3 is a partial block diagram of the construction joint of FIG. 1 with a grouting pipe disposed at the bottom thereof;
fig. 4 is the utility model discloses secretly dig the structure sketch map after the construction of the reverse construction seam of joint department in the subway station is accomplished.
In the figure 1, construction joints; 2. a water-blocking part; 3. caulking glue; 4. a grouting pipe; 5. a fastener; 100. a middle plate; 200. and a side wall.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a reverse construction joint at a joint in an underground excavated subway station, the section of a construction joint 1 is of a non-planar structure, at least one water-blocking part 2 is arranged along the width direction, and water seepage is blocked by the water-blocking part 2; the surface of the construction joint 1 is coated with caulking compound 3; the surface of the construction joint 1 is also provided with a grouting pipe 4.
Example 1:
as shown in fig. 4, the reverse construction joint 1 at the joint of the middle plate 100 and the side wall 200 is specifically described as an example, in this embodiment 1, only one embodiment of the water blocking part 2 is shown, and other embodiments are not shown in the drawings.
In the present embodiment, as shown in fig. 1, the construction joint 1 has a multi-step structure, and the water blocking portion 2 is provided for each step. A plurality of water blocking portions 2 formed by the multistage steps block external underground water in sequence to form a multistage water blocking structure, and water is prevented from permeating into the inner side of the side wall 200. Considering that the thickness of the side wall 200 in the current subway station is generally 600 or 800mm, the number of steps is set according to the thickness of the side wall 200. In this embodiment, the design is performed for the scheme that the thickness of the sidewall 200 is 600mm, and the number of the steps is three.
Specifically, the connecting surface between two adjacent steps is a vertical surface (as shown in fig. 1) or a bevel surface (not shown in the drawings).
Further, the height and/or width of each step may be the same or different.
In order to prevent water from entering, the water blocking part 2 needs to have a height difference with the side part of the construction joint 1, and specifically, the step close to the outer side of the side wall 200 is lower than the step close to the inner side of the side wall 200.
In order to further improve the self-waterproof capability of the construction joint 1, the surface of the construction joint 1 is coated with caulking compound 3. The thickness of the caulking compound 3 after molding is 8-10 mm. Of course, the thickness range can be adjusted according to actual needs.
As shown in fig. 3, in order to further improve the self-waterproof capability of the construction joint 1 and increase the concrete compactness at the construction joint 1, at least one grouting pipe 4 is arranged along the length direction of the construction joint 1, and all the grouting pipes 4 are fixed on the surface of the construction joint 1 through fasteners 5. The length of the grouting pipe 4 is the same as that of the construction joint 1; fastener 5 adopts fastener 5 that has ring shape bearing part, and fastener 5 screws in through the bolt and fixes slip casting pipe 4 on 1 surfaces of construction joint, prevents that slip casting pipe 4 from shifting at the pouring in-process.
As shown in fig. 2, the number of the grouting pipes 4 is one, and the grouting pipes are arranged on the middle line of the construction joint 1 in the width direction; or the number of the grouting pipes 4 is at least two, and the grouting pipes are uniformly distributed along the width direction of the construction joint 1.
The distance between two adjacent fasteners 5 arranged along the length direction of the grouting pipe 4 is 20 cm-60 cm. The closer the setting distance is, the firmer the setting distance is, but the relative cost is increased, and the setting distance can be selected according to actual conditions.
As shown in FIG. 2, the number of the steps is three, the width of the first step is the same as that of the third step, the width of the second step is larger than that of the first step, the width of the first step is 150mm, and the width of the second step is 300 or 500 mm. The maximum height difference of the steps on the construction joint 1 is 200mm, namely the height difference between the first step and the third step is 200 mm.
Example 2:
Example 3:
example 3 is different from examples 1 and 2 only in the structure of the water blocking part 2, the surface of the construction joint 1 is of a triangular or trapezoidal sawtooth structure, and the water blocking part 2 is of each sawtooth. And a space is reserved between every two adjacent saw teeth. The grout tube 4 is disposed on or between the serrations. The number of the grouting pipes 4 is also one or at least two.
Example 4:
The utility model provides a reverse construction joint of joint department in undercut subway station, through setting the section with the construction joint to nonplanar structure, the water-blocking portion that can block the infiltration has in the nonplanar structure, through set up the caulking glue on the step surface, through pouring concrete in the construction joint of completion back through the slip casting pipe to formation at the side wall, triple measure is in order to improve reverse construction joint's waterproof ability, the setting of slip casting pipe can also improve the closely knit degree of construction joint department concrete, it is inboard not only to have prevented more effectively that the groundwater in the outside from passing through the construction joint infiltration, construction joint department concrete placement's from water-proof effects has been improved, and it reaches the interior effect of beauty of concrete to have still improved construction joint concrete placement quality greatly.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The reverse construction joint at the joint in the underground excavated subway station is characterized in that the surface of the construction joint is of a non-planar structure and is provided with at least one water blocking part capable of blocking water seepage along the width direction; caulking glue is coated on the surface of the construction joint; and the surface of the construction joint is also provided with a grouting pipe.
2. The underground excavation subway station joint reverse construction joint as claimed in claim 1, wherein the construction joint is a multi-step structure, and the water blocking portion is each step.
3. The underground excavation subway station joint reverse construction seam as claimed in claim 2, wherein a connecting surface between two adjacent steps is a vertical surface or an inclined surface.
4. The underground excavation subway station joint reverse construction seam as claimed in claim 2, wherein the height and/or width of each step is the same or different.
5. The reverse construction joint at a joint in an underground excavated subway station as claimed in claim 1, wherein the construction joint comprises at least one upwardly arched semi-circular arc-shaped projection, the water blocking portion being each projection.
6. The reverse construction joint at a joint in an underground excavated subway station as claimed in claim 1, wherein the construction joint surface is a triangular or trapezoidal sawtooth structure, and the water blocking part is each sawtooth.
7. The reverse construction joint at a joint in an underground excavated subway station as claimed in claim 1, wherein the water blocking part of the construction joint is composed of one or more of a step structure, a slope structure, a sawtooth structure, and a protrusion structure.
8. The reverse construction joint at the joint in the underground excavated subway station as claimed in any one of claims 2 to 7, wherein the thickness of the caulk glue after molding is 8-10 mm.
9. The underground excavation subway station joint reverse construction joint as claimed in any of claims 2-7, wherein the number of said grouting pipes is at least one, and all said grouting pipes are arranged along the length direction of said construction joint, and all said grouting pipes are fixed on the surface of said construction joint by fasteners.
10. The underground excavation subway station joint reverse construction seam as claimed in claim 9, wherein a distance between two adjacent fasteners arranged along a length direction of the grouting pipe is 20-60 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921567933.3U CN210599025U (en) | 2019-09-19 | 2019-09-19 | Reverse construction seam at joint in underground excavation subway station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921567933.3U CN210599025U (en) | 2019-09-19 | 2019-09-19 | Reverse construction seam at joint in underground excavation subway station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210599025U true CN210599025U (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921567933.3U Active CN210599025U (en) | 2019-09-19 | 2019-09-19 | Reverse construction seam at joint in underground excavation subway station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210599025U (en) |
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2019
- 2019-09-19 CN CN201921567933.3U patent/CN210599025U/en active Active
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