A template and construction method suitable for invert filling in tunnel with large slope inclined shaft construction
By designing specific formwork structures and construction methods in the construction of large slope inclined shafts in the tunnel, including side formwork on the arch, middle formwork on the arch and filling formwork, the problems of concrete forming slope and construction efficiency during the arch and filling process are solved. Achieve better tunnel structure forming and construction efficiency.
Patent Information
- Application Number
- CN202110341910.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-03-30
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2041-03-30
AI Technical Summary
In tunnel construction, especially in large slope inclined shaft construction, the back arch and filling process is difficult, and the existing technology lacks effective construction equipment and methods to ensure concrete forming slope and improve construction efficiency.
A formwork installation beam arranged along the slope surface of the tunnel inclined shaft is designed, a first arch side form, a second arch side form, and a arch middle form, combined with the filling form and vibration equipment, through a specific Installation and pouring steps ensure concrete forming slope and construction efficiency.
The forming arc surface of the tunnel arch layer and the filling layer is effectively formed, which improves the efficiency of large-slope inclined shaft arch and filling construction, and meets the requirements of tunnel arc surface forming.
Smart Images
Figure CN112814710B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tunnel construction, and in particular to a template and a construction method suitable for filling an inverted arch in a tunnel with a large slope. Background Art
[0002] In order to shorten the construction period of a long tunnel, a steep inclined shaft has to be set up to increase the working surface. The construction of inverts, fillings and bottom plates in the steep inclined shaft will greatly increase the difficulty of the operation. In the construction of a super-long tunnel on the Sichuan-Tibet line, multiple inclined shafts were designed with a large inclination. The inverted trestle needs to be specially designed to ensure that the trestle does not slide down during walking. The inverted and filling pouring process needs to ensure the forming slope to meet the requirements of the tunnel arc surface forming, and reasonably use the characteristics of concrete flowing to the lower place to better form the tunnel invert layer and filling layer. At present, there is no better construction equipment and construction method in the construction of steeply sloped inclined shafts in tunnels. Summary of the invention
[0003] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a template and construction method for the construction of invert arches and fillings in tunnels with large slopes, which can improve the construction efficiency of invert arches and fillings in tunnels with large slopes and can ensure the forming slope of the invert arch concrete and filling concrete.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0005] A template suitable for filling an inverted arch in the construction of a steeply inclined shaft of a tunnel comprises a template mounting beam arranged along the inclined surface of the tunnel inclined shaft, wherein two template mounting beams are provided and arranged in parallel on both sides of the tunnel, wherein a first inverted arch side template is provided on one of the template mounting beams, and a second inverted arch side template is provided on the other template mounting beam, an inverted arch middle template is provided between the first inverted arch side template and the second inverted arch side template, and a filling template movable along the length direction of the template mounting beams is provided between the two template mounting beams.
[0006] As a further improvement of the above technical solution: the inverted arch intermediate formwork is provided with a plurality of pieces, and the plurality of inverted arch intermediate formworks are arranged at intervals along the length direction of the formwork mounting beam.
[0007] As a further improvement of the above technical solution: one end of the middle formwork of the inverted arch is provided with a butting portion, and the other end is provided with a lap portion, the butting portion is in abutment with the first inverted arch side formwork, and the lap portion is lapped on the second inverted arch side formwork.
[0008] As a further improvement of the above technical solution: a track is provided on the template mounting beam, and a walking wheel matching with the track is provided on the filling template.
[0009] As a further improvement of the above technical solution: a plurality of vibrating devices are provided on the filling template, and the plurality of vibrating devices are arranged at intervals along the length direction of the filling template.
[0010] As a further improvement of the above technical solution: a connecting beam is also provided at the front ends of the two template installation beams.
[0011] As a further improvement of the above technical solution: the first arch side formwork includes a first fixed formwork arranged on the formwork mounting beam, a movable formwork hinged to the inner side of the first fixed formwork, and a first driving member for driving the movable formwork to swing up and down.
[0012] As a further improvement of the above technical solution: a support member is provided between the first fixed template and the movable template.
[0013] As a further improvement of the above technical solution: the second arch side template includes a second fixed template arranged on the template mounting beam, a groove template hinged to the inner side of the second fixed template, and a second driving member for driving the groove template to swing up and down.
[0014] The above-mentioned construction method of a template suitable for filling an inverted arch in a tunnel with a large slope includes the following steps:
[0015] S1: Installation of the side formwork of the inverted arch: installing the first side formwork of the inverted arch and the second side formwork of the inverted arch on both sides of the tunnel respectively;
[0016] S2: installing the middle formwork of the inverted arch: installing the middle formwork of the inverted arch between the first side formwork of the inverted arch and the second side formwork of the inverted arch, and moving the filling formwork to the rear end of the formwork installation beam;
[0017] S3: pouring the inverted arch layer: the first inverted arch side formwork, the second inverted arch side formwork and the inverted arch middle formwork together form a forming arc surface of the inverted arch layer, and then pouring the inverted arch layer concrete;
[0018] S4: pouring the filling layer: after the pouring of the inverted arch layer is completed, the middle formwork of the inverted arch is removed, and then the filling formwork is moved to the front end of the formwork installation beam to pour the filling layer concrete at the current position.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] The template of the invention is suitable for inverted arch filling in the construction of a tunnel with a large slope. During the inverted arch and filling construction of the tunnel with a large slope, the first inverted arch side template, the second inverted arch side template and the inverted arch middle template form a molding arc surface of the inverted arch layer. The length of the first inverted arch side template and the second inverted arch side template is the one-time construction length of the tunnel inverted arch construction. The first inverted arch side template and the second inverted arch side template are conducive to the molding of the inverted arch side concrete. The inverted arch middle template arranged between the first inverted arch side template and the second inverted arch side template is used to ensure the molding slope of the inverted arch concrete. The filling template arranged between two template installation beams is used to ensure the molding slope of the filling concrete. The requirements for tunnel arc surface molding are met, the tunnel inverted arch layer and the tunnel filling layer are better molded, and the efficiency of the inverted arch and filling construction of the large slope inclined shaft is improved.
[0021] The construction method of the template suitable for filling an inverted arch in the construction of a steeply sloped tunnel shaft of the present invention ensures the forming slope of the filling concrete through the inverted arch middle template and the filling template, can better form the tunnel inverted arch layer and the tunnel filling layer, improves the efficiency of the steeply sloped tunnel inverted arch and filling construction, and meets the requirements for the construction of tunnel inclined shafts with different slopes. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 The present invention is a schematic diagram of the cross-sectional structure of a template inverted arch construction suitable for inverted arch filling in tunnel steep slope inclined shaft construction.
[0023] Figure 2 The present invention is a top view of a template invert construction for filling an invert in a tunnel with a large slope.
[0024] Figure 3 The invention is a side view of a template invert construction for filling an invert in a tunnel with a large slope.
[0025] Figure 4 The present invention is a schematic diagram of the cross-sectional structure of a template filling construction for filling an invert arch in a tunnel with a large slope.
[0026] Figure 5 The present invention is a top view of the template filling construction for filling the invert arch in the construction of a tunnel with a large slope.
[0027] Figure 6 The invention is a side view of the template filling construction for filling the invert arch in the construction of a tunnel with a large slope.
[0028] The numbers in the figure represent: 1. first inverted arch side formwork; 11. first fixed formwork; 12. movable formwork; 13. first driving member; 14. supporting member; 2. second inverted arch side formwork; 21. second fixed formwork; 22. groove formwork; 23. second driving member; 3. inverted arch middle formwork; 31. abutment portion; 32. overlapping portion; 4. filling formwork; 41. walking wheel; 5. formwork mounting beam; 51. track; 52. connecting beam; 6. vibrating equipment; 7. inverted arch layer; 8. filling layer. DETAILED DESCRIPTION
[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0030] Figures 1 to 6 An embodiment of the template suitable for filling an inverted arch in the construction of a steep inclined shaft of a tunnel of the present invention is shown. The template and construction method suitable for filling an inverted arch in the construction of a steep inclined shaft of a tunnel of the present embodiment include a template installation beam 5 arranged along the slope surface of the inclined shaft of the tunnel, two template installation beams 5 are provided and arranged in parallel on both sides of the tunnel, one of the template installation beams 5 is provided with a first inverted arch side template 1, the other template installation beam 5 is provided with a second inverted arch side template 2, an inverted arch middle template 3 is provided between the first inverted arch side template 1 and the second inverted arch side template 2, and a filling template 4 movable along the length direction of the template installation beam 5 is provided between the two template installation beams 5.
[0031] When the inverted arch and filling template is used for the inverted arch and filling construction of a tunnel with a large slope, the first inverted arch side template 1, the second inverted arch side template 2 and the inverted arch middle template 3 form a molding arc surface of the inverted arch layer 7. The length of the first inverted arch side template 1 and the second inverted arch side template 2 is the one-time construction length of the tunnel inverted arch construction. The first inverted arch side template 1 and the second inverted arch side template 2 are conducive to the molding of the inverted arch side concrete. The inverted arch middle template 3 arranged between the first inverted arch side template 1 and the second inverted arch side template 2 ensures the molding slope of the inverted arch concrete. The filling template 4 arranged between two template mounting beams 5 ensures the molding slope of the filling concrete, meets the requirements for tunnel arc surface molding, better molds the tunnel inverted arch layer 7 and the tunnel filling layer 8, and improves the efficiency of the tunnel with a large slope and filling construction.
[0032] Furthermore, in this embodiment, a plurality of inverted arch intermediate templates 3 are provided, and the plurality of inverted arch intermediate templates 3 are arranged at intervals along the length direction of the template mounting beam 5. A template-free interval is reserved between two adjacent inverted arch intermediate templates 3, which can be used as a concrete vibration and exhaust zone to facilitate the vibration and exhaust of the inverted arch concrete.
[0033] Furthermore, in the present embodiment, abutment portion 31 is provided at one end of the middle formwork 3 of the inverted arch, and a lap portion 32 is provided at the other end, the abutment portion 31 abuts against the first side formwork 1 of the inverted arch, and the lap portion 32 is overlapped on the second side formwork 2 of the inverted arch, so as to facilitate the positioning and installation of the middle formwork 3 of the inverted arch. Specifically, the abutment portion 31 abuts against the movable formwork 12, and the lap portion 32 is overlapped on the groove formwork 22.
[0034] Furthermore, in this embodiment, a track 51 is provided on the template mounting beam 5, and a running wheel 41 cooperating with the track 51 is provided on the filling template 4. Through the cooperation between the track 51 and the running wheel 41, the filling template 4 can be moved from a low position to a high position along the length direction of the template mounting beam 5 as the filling concrete is poured, so as to complete the pouring and forming of a construction length filling layer 8, and further ensure the forming slope of the filling concrete.
[0035] Furthermore, in this embodiment, a plurality of vibrating devices 6 are provided on the filling formwork 4, and the plurality of vibrating devices 6 are arranged at intervals along the length direction of the filling formwork 4. By providing a plurality of vibrating devices 6, full-section vibration of the filling concrete is achieved, which is beneficial to the forming of the filling layer 8.
[0036] Furthermore, in this embodiment, the front ends of the two template installation beams 5 (the ends with lower height of the slope tunnel, Figure 3 A connecting beam 52 is also provided at the left end of the panel to ensure the positioning dimensions of the two side templates.
[0037] Furthermore, in this embodiment, the first inverted arch side template 1 includes a first fixed template 11 arranged on the template mounting beam 5, a movable template 12 hinged to the inner side of the first fixed template 11, and a first driving member 13 for driving the movable template 12 to swing up and down. Preferably, a telescopic member is used as the first driving member 13, and its two ends are respectively hinged to the first fixed template 11 and the movable template 12. The movable template 12 is provided with an arc surface for forming the inverted arch concrete, which further meets the requirements of tunnel arc surface forming. The first fixed template 11 and the movable template 12 both participate in the forming of the inverted arch concrete.
[0038] Furthermore, in this embodiment, a support member 14 is provided between the first fixed template 11 and the movable template 12. When the movable template 12 is lowered, the support member 14 supports and fixes the movable template 12.
[0039] Furthermore, in this embodiment, the second inverted arch side template 2 includes a second fixed template 21 arranged on the template mounting beam 5, a groove template 22 hinged to the inner side of the second fixed template 21, and a second driving member 23 for driving the groove template 22 to swing up and down. Preferably, a telescopic member is used as the second driving member 23, and its two ends are respectively hinged to the second fixed template 21 and the groove template 22. The second fixed template 21 and the groove template 22 both participate in the forming of the inverted arch concrete, and the groove template 22 can improve the efficiency of the asymmetric inclined shaft tunnel construction.
[0040] Figures 1 to 6 An embodiment of the inverted arch filling formwork construction method applicable to slope tunnel construction of the present invention is shown. The inverted arch filling formwork construction method applicable to slope tunnel construction of the present invention comprises the following steps:
[0041] S1: Installation of the inverted arch side formwork: installing the first inverted arch side formwork 1 and the second inverted arch side formwork 2 on both sides of the tunnel respectively;
[0042] S2: Installation of the inverted arch middle formwork 3: Install the inverted arch middle formwork 3 between the first inverted arch side formwork 1 and the second inverted arch side formwork 2, and move the filling formwork 4 to the rear end of the track 51 on the formwork installation beam 5, without occupying the distance for the inverted arch construction;
[0043] S3: pouring the inverted arch layer 7: the first inverted arch side formwork 1, the second inverted arch side formwork 2 and the inverted arch middle formwork 3 together form a forming arc surface of the inverted arch layer 7, and then pouring the inverted arch layer concrete;
[0044] S4: pouring the filling layer 8: After the inverted arch layer 7 is poured, the middle formwork 3 of the inverted arch is removed, the movable formwork 12 is put away, and the filling formwork 4 is moved to the front end of the formwork installation beam 5 (the lower end of the slope tunnel height, Figure 6 The filling layer concrete at the current position is poured and the vibrating device 6 is turned on. As the filling template 4 moves from low to high section by section, the pouring of a filling layer 8 of a construction length is completed.
[0045] The method for constructing a formwork for filling an inverted arch in a steeply sloped tunnel shaft ensures the forming slope of the filling concrete through the inverted arch middle formwork 3 and the filling formwork 4, can better form the tunnel inverted arch layer 7 and the tunnel filling layer 8, improves the efficiency of the inverted arch and filling construction of the steeply sloped tunnel shaft, and meets the requirements for the construction of tunnel inclined shafts with different slopes.
[0046] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.
Claims
1. A template suitable for filling an inverted arch in a tunnel with a large slope, characterized in that: The invention comprises a template installation beam (5) arranged along the inclined surface of the inclined shaft of a tunnel, wherein two template installation beams (5) are provided and arranged in parallel on both sides of the tunnel, wherein one of the template installation beams (5) is provided with a first inverted arch side template (1), and the other template installation beam (5) is provided with a second inverted arch side template (2), an inverted arch middle template (3) is provided between the first inverted arch side template (1) and the second inverted arch side template (2), a filling template (4) movable along the length direction of the template installation beam (5) is provided between the two template installation beams (5), a track (51) is provided on the template installation beam (5), and a walking wheel (41) matched with the track (51) is provided on the filling template (4), and the first inverted arch side template is provided with a first inverted arch side template. (1) comprises a first fixed template (11) arranged on a template mounting beam (5), a movable template (12) hinged to the inner side of the first fixed template (11), and a first driving member (13) for driving the movable template (12) to swing up and down, wherein the hinge between the first fixed template (11) and the movable template (12) is located above the corresponding track (51), and the second inverted arch side template (2) comprises a second fixed template (21) arranged on the template mounting beam (5), a groove template (22) hinged to the inner side of the second fixed template (21), and a second driving member (23) for driving the groove template (22) to swing up and down, wherein the groove template (22) is located below the corresponding track (51).
2. The template suitable for filling inverted arches in tunnel steep slope shaft construction according to claim 1 is characterized in that: The inverted arch intermediate formwork (3) is provided in a plurality of pieces, and the plurality of inverted arch intermediate formwork (3) are arranged at intervals along the length direction of the formwork mounting beam (5).
3. The template suitable for filling inverted arches in tunnel steep slope shaft construction according to claim 1 is characterized in that: One end of the inverted arch middle template (3) is provided with a butting portion (31), and the other end is provided with a lap portion (32), the butting portion (31) is butted against the first inverted arch side template (1), and the lap portion (32) is lapped on the second inverted arch side template (2).
4. The template suitable for filling inverted arches in tunnel steep slope shaft construction according to claim 1 is characterized in that: The filling template (4) is provided with a plurality of vibrating devices (6), and the plurality of vibrating devices (6) are arranged at intervals along the length direction of the filling template (4).
5. The template suitable for filling inverted arches in tunnel steep slope shaft construction according to claim 1 is characterized in that: The front ends of the two template installation beams (5) are also provided with connecting beams (52).
6. The template for filling inverted arches in tunnel steep slope shaft construction according to any one of claims 1 to 5, characterized in that: A support member (14) is provided between the first fixed template (11) and the movable template (12).
7. A construction method for a template for filling an invert arch in a tunnel with a large slope as claimed in any one of claims 1 to 6, characterized in that: The steps include: S1: Installation of the inverted arch side formwork: installing the first inverted arch side formwork (1) and the second inverted arch side formwork (2) on both sides of the tunnel respectively; S2: Installation of the inverted arch middle formwork (3): installing the inverted arch middle formwork (3) between the first inverted arch side formwork (1) and the second inverted arch side formwork (2), and moving the filling formwork (4) to the rear end of the formwork installation beam (5); S3: pouring the inverted arch layer (7): the first inverted arch side formwork (1), the second inverted arch side formwork (2) and the inverted arch middle formwork (3) together form a curved surface of the inverted arch layer (7), and then pouring concrete of the inverted arch layer (7); S4: pouring the filling layer (8): after the pouring of the inverted arch layer (7) is completed, the middle formwork (3) of the inverted arch is removed, and then the filling formwork (4) is moved to the front end of the formwork installation beam (5), and the filling layer (8) concrete at the current position is poured.