Underground gallery plugging structure for deep foundation pit
By arranging supporting short walls and embedded masonry structures on the inside of the sealing wall of the deep foundation pit underground corridor, and setting up waterstops, the problems in the existing technology that the sealing structure is easily damaged when removed and lacks waterproofing are solved. problem, achieving significant improvement in structural stability and waterproofing effect.
Patent Information
- Application Number
- CN202421138928.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing underground corridor sealing structure of deep foundation pits is prone to damage the bottom plate, top plate and side walls when it is broken later, and there is a lack of effective waterproofing measures, which can easily lead to water immersion in the underground corridor sealing structure.
Design an underground corridor sealing structure for deep foundation pits. By setting up multiple supporting short walls on the inside of the sealing wall as a lateral backing measure for the sealing wall, a masonry structure is used, and the sealing structure is The main body of the wall frame and the short wall frame are embedded with a blocking wall masonry structure and a short wall masonry structure, and middle-buried waterstops and back-mounted waterstops are installed to prevent water immersion.
This sealing structure can ensure the structural stability of the sealing wall, avoid damage to the original structure during later demolition, and significantly improve the waterproofing effect to prevent water infiltration in the underground corridor sealing structure.
Smart Images
Figure CN222375499U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of underground passage blocking structures, and in particular relates to an underground gallery blocking structure used for a deep foundation pit. Background Art
[0002] The underground corridor sealing measures in deep foundation pits are usually carried out to ensure the safety and quality of on-site construction based on the difference in construction time. Due to the differences in construction nodes, the wall sealing structure must ensure that the safety, durability and waterproofing requirements of the main underground corridor can be met before and after the overall construction. However, the existing temporary sealing structures of underground corridors mostly adopt cast-in-place concrete structures together with the main underground structure. Due to structural strength problems, the demolition process of the temporary structure during the later demolition is likely to damage the original structures such as the bottom plate, top plate and side wall. At the same time, the water stop belt connected to the secondary construction of the permanent structure cannot be effectively protected. In addition, the temporary sealing structure lacks reliable waterproof measures, which easily leads to water immersion in the underground corridor sealing structure. For this reason, it is necessary to propose an underground corridor sealing structure for deep foundation pits to solve the above problems. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide an underground corridor blocking structure for deep foundation pits in view of the deficiencies in the above-mentioned prior art, which has a reasonable structural design and remarkable waterproof effect. By arranging a plurality of supporting short walls on the inner side of the blocking wall as a lateral return top measure of the blocking wall, the blocking wall can be supported by the supporting short walls to ensure the structural stability of the blocking wall. The blocking structure adopts a masonry structure, which can effectively solve the problem that the original structures such as the bottom plate, top plate and side walls are easily damaged when the traditional blocking structure is demolished at a later stage.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an underground corridor blocking structure for deep foundation pits, characterized in that it includes a blocking wall body arranged at one end of the underground corridor and a plurality of supporting short walls arranged inside the blocking wall body, the supporting short walls are perpendicular to the blocking wall body, the blocking wall body includes a blocking wall frame body and a blocking wall masonry structure embedded in the blocking wall frame body, the supporting short walls include a short wall frame connected to the blocking wall frame body and a short wall masonry structure embedded in the blocking wall frame body;
[0005] The blocking wall frame body is a frame structure composed of a plurality of first reinforced concrete columns and a plurality of ring beams, the short wall frame includes a second reinforced concrete column and a plurality of cross braces, the number of cross braces in the short wall frame is equal to the number of ring beams and corresponds one to one, the cross braces are connected between the second reinforced concrete column and the first reinforced concrete column arranged opposite thereto, and the lower ends of the first reinforced concrete column and the second reinforced concrete column are both anchored on the bottom plate of the underground corridor;
[0006] Embedded waterstops and back-attached waterstops are provided between a ring beam at the bottom of the blocking wall frame body and the bottom plate of the underground corridor, and between a ring beam at the top of the blocking wall frame body and the top plate of the underground corridor.
[0007] The above-mentioned underground corridor sealing structure for deep foundation pits is characterized in that: multiple first reinforced concrete columns are evenly arranged along the width direction of the underground corridor, and the two first reinforced concrete columns on both sides of the sealing wall frame body are respectively arranged close to the ends of the side walls on both sides of the underground corridor.
[0008] The above-mentioned underground corridor sealing structure for deep foundation pits is characterized in that embedded waterstop strips and back-attached waterstop strips are arranged between the two first reinforced concrete columns on both sides of the sealing wall frame body and the side walls on both sides of the underground corridor.
[0009] The above-mentioned underground gallery sealing structure for deep foundation pits is characterized in that grooves for installing embedded waterstop strips are opened on the top plate, bottom plate and side walls of the underground gallery, and waterstop steel plates are pre-buried in the grooves.
[0010] The above-mentioned underground gallery blocking structure for deep foundation pit is characterized in that the cross brace and the ring beam as well as the cross brace and the first reinforced concrete column are perpendicular to each other.
[0011] The above-mentioned underground corridor blocking structure for deep foundation pits is characterized in that: horizontal tension bars built in the blocking wall masonry structure are connected between the plurality of the first reinforced concrete columns, and horizontal tension bars built in the short wall masonry structure are connected between the second reinforced concrete column and the first reinforced concrete column arranged opposite thereto.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] 1. The utility model provides a plurality of short supporting walls on the inner side of the blocking wall as a lateral top-returning measure of the blocking wall, so that the blocking wall can be supported by the short supporting walls to ensure the structural stability of the blocking wall.
[0014] 2. The utility model forms a blocking wall by embedding a blocking wall masonry structure on the blocking wall frame body, and forms a supporting short wall by embedding a short wall masonry structure on the short wall frame. While the stability of the main structure is ensured by the blocking wall frame body and the short wall frame, the embedding of the blocking wall masonry structure and the short wall masonry structure makes it possible for there to be no structural problems between the blocking structure and the main structure of the underground corridor, thereby effectively solving the problem of the traditional blocking structure being easily damaged in the later stage when the original structures such as the bottom plate, the top plate and the side wall are removed.
[0015] 3. The utility model can effectively prevent water from entering the underground gallery sealing structure by arranging embedded waterstops and back-sticked waterstops between the ring beam and the top plate of the underground gallery and between the ring beam and the bottom plate of the underground gallery.
[0016] To sum up, the utility model has a reasonable structural design and a significant waterproof effect. By arranging multiple supporting short walls on the inner side of the blocking wall as a lateral return measure of the blocking wall, the blocking wall can be supported by the supporting short walls to ensure the structural stability of the blocking wall. The blocking structure adopts a masonry structure, which can effectively solve the problem that the original structures such as the bottom plate, top plate and side walls are easily damaged when the traditional blocking structure is demolished in the later stage.
[0017] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the utility model.
[0019] Figure 2 The utility model is a schematic diagram of the connection structure between the ring beam and the bottom plate of the underground gallery.
[0020] Description of reference numerals:
[0021] 1—first reinforced concrete column; 2—ring beam; 3—second reinforced concrete column;
[0022] 4—horizontal brace; 5—blocking wall masonry structure; 6—short wall masonry structure;
[0023] 7—Buried waterstop; 8—Back-attached waterstop; 9—Waterstop steel plate. DETAILED DESCRIPTION
[0024] like Figure 1 and Figure 2 As shown, the utility model comprises a blocking wall arranged at one end of the underground corridor and a plurality of supporting short walls arranged inside the blocking wall, wherein the supporting short walls are perpendicular to the blocking wall, the blocking wall comprises a blocking wall frame body and a blocking wall masonry structure 5 embedded in the blocking wall frame body, and the supporting short walls comprise a short wall frame connected to the blocking wall frame body and a short wall masonry structure 6 embedded in the blocking wall frame body;
[0025] The blocking wall frame body is a frame structure composed of a plurality of first reinforced concrete columns 1 and a plurality of ring beams 2. The short wall frame includes a second reinforced concrete column 3 and a plurality of cross braces 4. The number of cross braces 4 in the short wall frame is equal to and corresponds to the number of ring beams 2. The cross braces 4 are connected between the second reinforced concrete column 3 and the first reinforced concrete column 1 arranged opposite thereto. The lower ends of the first reinforced concrete column 1 and the second reinforced concrete column 3 are both anchored on the bottom plate of the underground corridor.
[0026] An embedded waterstop 7 and a back-attached waterstop 8 are provided between a ring beam 2 at the bottom of the blocking wall frame body and the bottom plate of the underground corridor, and between a ring beam 2 at the top of the blocking wall frame body and the top plate of the underground corridor.
[0027] In actual use, by arranging a plurality of short supporting walls on the inner side of the blocking wall as a lateral return measure of the blocking wall, the blocking wall can be supported by the short supporting walls to ensure the structural stability of the blocking wall.
[0028] It should be noted that the blocking wall is formed by embedding the blocking wall masonry structure 5 on the main body of the blocking wall frame, and the supporting short wall is formed by embedding the short wall masonry structure 6 on the short wall frame. While the stability of the main structure is ensured by the blocking wall frame main body and the short wall frame, the embedding of the blocking wall masonry structure 5 and the short wall masonry structure 6 makes it possible for there to be no structural problems between the blocking structure and the main structure of the underground corridor, thereby effectively solving the problem of the traditional blocking structure being easily damaged in the later stage when the original structures such as the bottom plate, top plate and side walls are demolished.
[0029] In specific implementation, by arranging the embedded waterstop 7 and the back-attached waterstop 8 between the ring beam 2 and the top plate of the underground corridor and between the ring beam 2 and the bottom plate of the underground corridor, water intrusion in the underground corridor blocking structure can be effectively avoided.
[0030] During specific implementation, the blocking wall frame body is sequentially provided with five ring beams 2 from top to bottom, the ring beams 2 and the cross braces 4 are parallel to the base plate, a ring beam 2 at the top of the blocking wall frame body is arranged close to the top plate, and a ring beam 2 at the bottom of the blocking wall frame body is arranged close to the base plate.
[0031] During specific implementation, the ring beam 2 and the cross brace 4 are both reinforced concrete structures, one end of the cross brace 4 is connected to the second reinforced concrete column 3 , and the other end of the cross brace 4 is connected to the intersection of the first reinforced concrete column 1 and the ring beam 2 .
[0032] In this embodiment, the plurality of first reinforced concrete columns 1 are evenly arranged along the width direction of the underground corridor, and the two first reinforced concrete columns 1 on both sides of the blocking wall frame body are respectively arranged close to the ends of the side walls on both sides of the underground corridor.
[0033] In actual use, the number of the first reinforced concrete columns 1 is five, the lower ends of the first reinforced concrete columns 1 are anchored on the bottom plate, and the upper ends of the first reinforced concrete columns 1 are connected to the top plate.
[0034] In specific implementation, the number of the second reinforced concrete columns 3 is two less than the number of the first reinforced concrete columns 1, that is, the number of the second reinforced concrete columns 3 is three, and the three second reinforced concrete columns 3 are respectively arranged on the inner sides of the three first reinforced concrete columns 1 in the middle part of the blocking wall frame body.
[0035] In this embodiment, embedded waterstop strips 7 and back-attached waterstop strips 8 are provided between the two first reinforced concrete columns 1 on both sides of the blocking wall frame body and the side walls on both sides of the underground corridor.
[0036] In specific implementation, the connection structure between the first reinforced concrete column 1 and the side wall of the underground gallery and the connection structure between the ring beam 2 and the top plate of the underground gallery are Figure 2 The structures shown are the same.
[0037] In this embodiment, grooves for installing the embedded waterstop 7 are provided on the top plate, bottom plate and side walls of the underground corridor, and waterstop steel plates 9 are pre-buried in the grooves.
[0038] In actual use, the waterstop steel plate 9 is a "J"-shaped steel plate, and the waterstop steel plate 9 is used to protect the embedded waterstop strip 7.
[0039] In this embodiment, the cross brace 4 and the ring beam 2 as well as the cross brace 4 and the first reinforced concrete column 1 are perpendicular to each other.
[0040] In actual use, the first reinforced concrete column 1 and the second reinforced concrete column 3 are parallel to each other.
[0041] In this embodiment, horizontal tension bars built in the blocking wall masonry structure 5 are connected between the multiple first reinforced concrete columns 1, and horizontal tension bars built in the short wall masonry structure 6 are connected between the second reinforced concrete column 3 and the first reinforced concrete column 1 arranged opposite to it.
[0042] In actual use, the setting of horizontal reinforcement can ensure the stability of the blocking wall during the backfill process and facilitate subsequent demolition.
[0043] When the utility model is actually used, the blocking wall frame body and the short wall frame are first constructed. During the construction process, embedded waterstop strips 7 and back-attached waterstop strips 8 are arranged between a ring beam 2 at the bottom of the blocking wall frame body and the bottom plate of the underground corridor, between a ring beam 2 at the top of the blocking wall frame body and the top plate of the underground corridor, and between the two first reinforced concrete columns 1 on both sides of the blocking wall frame body and the side walls of the underground corridor. Then, bricks are laid in the frames of the blocking wall frame body and the short wall frame to form a blocking wall masonry structure 5 and a short wall masonry structure 6, thereby completing the construction of the blocking wall and the supporting short wall.
[0044] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.
Claims
1. An underground gallery blocking structure for a deep foundation pit, characterized in that: It comprises a blocking wall body arranged at one end of an underground corridor and a plurality of supporting short walls arranged inside the blocking wall body, wherein the supporting short walls are perpendicular to the blocking wall body, the blocking wall body comprises a blocking wall frame body and a blocking wall masonry structure (5) embedded in the blocking wall frame body, and the supporting short walls comprise a short wall frame connected to the blocking wall frame body and a short wall masonry structure (6) embedded in the blocking wall frame body; The blocking wall frame body is a frame structure composed of a plurality of first reinforced concrete columns (1) and a plurality of ring beams (2); the short wall frame comprises a second reinforced concrete column (3) and a plurality of cross braces (4); the number of cross braces (4) in the short wall frame is equal to and corresponds to the number of ring beams (2); the cross braces (4) are connected between the second reinforced concrete column (3) and the first reinforced concrete column (1) arranged opposite thereto; the lower ends of the first reinforced concrete column (1) and the second reinforced concrete column (3) are both anchored on the bottom plate of the underground corridor; An embedded waterstop (7) and a back-attached waterstop (8) are provided between a ring beam (2) at the bottom of the blocking wall frame body and the bottom plate of the underground corridor, and between a ring beam (2) at the top of the blocking wall frame body and the top plate of the underground corridor.
2. An underground gallery blocking structure for a deep foundation pit according to claim 1, characterized in that: The plurality of first reinforced concrete columns (1) are evenly arranged along the width direction of the underground corridor, and the two first reinforced concrete columns (1) on both sides of the blocking wall frame body are respectively arranged close to the ends of the side walls on both sides of the underground corridor.
3. An underground gallery blocking structure for a deep foundation pit according to claim 2, characterized in that: Embedded waterstops (7) and back-attached waterstops (8) are provided between the two first reinforced concrete columns (1) on both sides of the blocking wall frame body and the side walls on both sides of the underground corridor.
4. The underground gallery blocking structure for a deep foundation pit according to claim 3, characterized in that: The top plate, bottom plate and side wall of the underground gallery are all provided with grooves for installing the embedded water stop belt (7), and a water stop steel plate (9) is pre-buried in the groove.
5. The underground gallery blocking structure for a deep foundation pit according to claim 1, characterized in that: The cross brace (4) and the ring beam (2) as well as the cross brace (4) and the first reinforced concrete column (1) are perpendicular to each other.
6. The underground gallery blocking structure for a deep foundation pit according to claim 1, characterized in that: Horizontal tension bars built in the blocking wall masonry structure (5) are connected between the plurality of the first reinforced concrete columns (1), and horizontal tension bars built in the short wall masonry structure (6) are connected between the second reinforced concrete column (3) and the first reinforced concrete column (1) arranged opposite thereto.