CN111794776A - Induced joint structure of water delivery tunnel concrete lining - Google Patents
Induced joint structure of water delivery tunnel concrete lining Download PDFInfo
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- CN111794776A CN111794776A CN202010702135.8A CN202010702135A CN111794776A CN 111794776 A CN111794776 A CN 111794776A CN 202010702135 A CN202010702135 A CN 202010702135A CN 111794776 A CN111794776 A CN 111794776A
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- 239000004567 concrete Substances 0.000 title claims abstract description 112
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- 229910000746 Structural steel Inorganic materials 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 210000003205 muscle Anatomy 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000035882 stress Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to the technical field of water delivery tunnel construction, in particular to a concrete lining induced joint structure of a water delivery tunnel, which has the technical scheme that: the water-conveying tunnel concrete lining induced joint structure comprises a tunnel, a concrete lining and an induced joint structure, wherein the concrete lining is arranged on the inner wall of the tunnel, the induced joint structure comprises structural steel bars arranged in the concrete lining, water-stop belts buried in the concrete lining and annular structural joints arranged on one side of the concrete lining, the structural steel bars comprise longitudinal stress steel bars and annular stress steel bars, the steel bar quantity of the longitudinal stress steel bars is reduced at the positions of the annular structural joints of the concrete lining, and the induced joint structure further comprises fixing pieces arranged in the concrete lining and used for fixing the water-stop belts.
Description
Technical Field
The invention relates to the technical field of water delivery tunnel construction, in particular to a concrete lining induced joint structure of a water delivery tunnel.
Background
In water conservancy projects, closed water delivery channels are constructed by excavating through mountains for water delivery, and the closed water delivery channels are called water delivery tunnels which are used for releasing water required by irrigation, power generation, water supply and the like from reservoirs. Lining refers to a permanent supporting structure built by reinforced concrete and other materials along the periphery of a tunnel body in order to prevent surrounding rocks from deforming or collapsing, and lining technology is generally applied to tunnel engineering and water conservancy channels.
The water delivery tunnel all can bear inside and outside water pressure at different operating modes for random fracture takes place easily for the concrete lining in the water delivery tunnel, in case the concrete lining fracture, not only can accelerate the reinforcing bar corrosion in the concrete lining, still can influence the stability and the safety of tunnel when serious.
Disclosure of Invention
The invention aims to provide a concrete lining induced joint structure of a water delivery tunnel, which can control the cracking position of a concrete lining and avoid the condition that the concrete lining is easy to seep water at the cracking position.
The technical purpose of the invention is realized by the following technical scheme: the induced joint structure of the concrete lining of the water delivery tunnel comprises the tunnel, the concrete lining arranged on the inner wall of the tunnel and the induced joint structure arranged on the concrete lining, wherein the induced joint structure comprises structural steel bars arranged in the concrete lining, a water stop belt embedded in the concrete lining and an annular structural joint arranged on one surface of the concrete lining;
the structural steel bars comprise longitudinal stress steel bars and circumferential stress steel bars, and the concrete lining reduces the steel bar amount of the longitudinal stress steel bars at the positions of circumferential structural joints;
the induced joint structure further comprises a fixing piece arranged in the concrete lining and used for fixing the water stop belt.
Through adopting above-mentioned technical scheme, the setting up of induced joint structure makes the concrete lining thickness reduce on circumferential structure seam position, and make the concrete lining reduce the bearing capacity on circumferential structure seam's position, when the water delivery tunnel bears inside and outside water pressure, induced joint structure can induce the position fracture of concrete lining at circumferential structure seam, reduce the condition that the random fracture appears in the concrete lining, when the position department fracture of concrete lining at circumferential structure seam, bury underground of waterstop can avoid the condition that the easy infiltration appears in the fracture position department in the concrete lining.
The invention is further configured to: the annular stress steel bar groups comprise first annular steel bar groups and second annular steel bar groups, the first annular steel bar groups and the second annular steel bar groups are radially arranged at intervals in the concrete lining, and a plurality of first annular steel bars and a plurality of second annular steel bars are longitudinally arranged in the concrete lining;
the longitudinal stressed steel bars comprise a first longitudinal steel bar group and a second longitudinal steel bar group, the first longitudinal steel bar group and the second longitudinal steel bar group are arranged in the concrete lining at intervals in the radial direction, the first longitudinal steel bars are connected to the outer sides of the first circumferential steel bars, a plurality of first longitudinal steel bars are arranged at intervals in the circumferential direction of the first circumferential steel bars, the second longitudinal steel bars are connected to the outer sides of the second circumferential steel bars, and a plurality of second longitudinal steel bars are arranged at intervals in the circumferential direction of the second circumferential steel bars;
the first longitudinal steel bar is disconnected at the annular structural joint, the disconnected end of the first longitudinal steel bar is connected with a U-shaped turning bar, the non-connected end of the U-shaped turning bar, which is connected with the first longitudinal steel bar, turns into the concrete lining, and the water stop is buried between the U-shaped turning bar and the second annular steel bar.
By adopting the technical scheme, the annular stressed steel bars and the longitudinal stressed steel bars form the structural steel bars of the concrete lining, so that the concrete lining has enough structural strength, wherein the amount of the longitudinal stressed steel bars of the concrete lining at the annular structural joint is reduced at the broken part of the first longitudinal steel bars, and the bearing capacity of the concrete lining at the annular structural joint is reduced, so that the concrete lining is induced to crack at the annular structural joint; the U-shaped turning rib turns into to the inside of concrete lining then to provide spacing space for burying underground of hosepipe, and the constructor of being convenient for fixes the waterstop.
The invention is further configured to: the fixing piece is an opening stirrup, the two sides of the water stop belt are tightly propped against the opening stirrup, and the opening stirrup is connected with the U-shaped turning rib.
Through adopting above-mentioned technical scheme, under the condition that does not damage the waterstop effective part for the waterstop presss from both sides tightly between the opening stirrup of its both sides, thereby buries the waterstop fixedly underground.
The invention is further configured to: the U-shaped turning rib is connected with a third annular reinforcing steel bar at the part far away from the first longitudinal reinforcing steel bar, and the third annular reinforcing steel bar is arranged between the first annular reinforcing steel bar and the second annular reinforcing steel bar.
Through adopting above-mentioned technical scheme, the setting of third hoop reinforcing bar can avoid the U-shaped to turn the muscle the condition that easily warp to appear, can strengthen the structural strength of the concrete lining of hoop structural joint both sides simultaneously, has strengthened the induced seam structure and has connect the induced effect of fracture in hoop structural joint department to the concrete lining.
The invention is further configured to: and waterproof flexible materials are filled in the circumferential structural seams.
Through adopting above-mentioned technical scheme for ring structure seam department still keeps better deformability when having better waterproof performance, so that the fracture induction of induced joint structure to concrete lining.
The invention is further configured to: the water stop is a rubber water stop.
Through adopting above-mentioned technical scheme, the rubber waterstop has better deformability, and the constructor of being convenient for buries the waterstop in annular concrete lining underground.
The invention is further configured to: the fixing piece is a square tube, the two sides of the water stop belt are tightly propped against the square tube, the square tube is respectively connected with the U-shaped turning rib and the second longitudinal steel bar, and the square tube is detachably connected with a pushing piece which tightly props against the water stop belt;
the pushing piece comprises a shell, one end, far away from the square pipe, of the shell is abutted against a second circumferential reinforcing steel bar and a third circumferential reinforcing steel bar, a screw is connected in the shell in a rotating mode, the axis of the screw is parallel to a first longitudinal reinforcing steel bar and a second longitudinal reinforcing steel bar at the same time, a driving shaft is arranged on the shell and drives the screw to rotate through a bevel gear structure, a screw block is arranged in the shell in a sliding mode and is in threaded connection with the screw, one end, close to the square pipe, of the screw block is connected with a push rod, one end, far away from the screw block, of the push rod penetrates through the shell, a scale mark is formed in the push rod, and.
Through adopting above-mentioned technical scheme, when fixed waterstop, the square pipe of waterstop both sides utilizes the impeller to support tightly behind the waterstop simultaneously, again with square pipe respectively with U-shaped turn muscle and the vertical reinforcing bar connection of second, support tight in-process, drive the screw rod through rotating the drive shaft and rotate, the rotation of screw rod makes the spiral shell piece remove in the casing, thereby make the ejector pin drive its square pipe of connecting and support tightly on the waterstop, the pushing tight of impeller makes the connection process more stable when constructor vacates both hands and connects the square pipe, in addition, because the setting of scale mark on the ejector pin, make constructor can be through the intermediate position that the scale on two ejector pins so that the waterstop is located induced crack structure department of calibration, be convenient for the accurate positioning of waterstop before fixed.
The invention is further configured to: two mounting plates are arranged on the side wall of the square tube facing the shell at intervals, the outer end of the ejector rod is embedded into the two mounting plates, and the ejector rod is connected with the two mounting plates through bolts.
By adopting the technical scheme, after the square pipe is tightly propped against the water stop belt by the pushing piece and is connected with the U-shaped turning rib and the second longitudinal rib, the pushing piece and the square pipe can be detached so as to be recycled.
In conclusion, the invention has the following beneficial effects:
firstly, when the water delivery tunnel bears internal and external water pressure, the induced joint structure can induce the concrete lining to crack at the position of the circumferential structural joint, so that the condition that the concrete lining cracks randomly is reduced;
secondly, when the concrete lining cracks at the position of the annular structural joint, the water stop belt is embedded to avoid the situation that the concrete lining is easy to seep water at the cracking position;
thirdly, under the condition that the effective part of the water stop is not damaged, the water stop is convenient to fix and bury by constructors.
Drawings
FIG. 1 is an overall schematic view of a concrete lining induced joint structure of a water delivery tunnel according to the present invention;
FIG. 2 is a schematic view of the internal structure of the embodiment shown in FIG. 1 taken along line A-A;
FIG. 3 is a schematic view of a structural reinforcement bar according to one embodiment;
FIG. 4 is a schematic view of the second embodiment taken along line A-A in FIG. 1;
FIG. 5 is a schematic structural view of a structural reinforcing bar according to the second embodiment;
FIG. 6 is a partial enlarged view at B in FIG. 5;
FIG. 7 is a sectional view of the pusher and the square tube in the second embodiment.
In the figure: 1. a tunnel; 2. concrete lining; 3. a water stop; 31. an open stirrup; 32. a square tube; 321. mounting a plate; 4. sewing the annular structure; 41. a waterproof flexible material; 5. longitudinal stressed steel bars; 51. a first longitudinal reinforcement; 52. a second longitudinal reinforcement; 53. a U-shaped crutch rib; 6. circumferential stress steel bars; 61. a first circumferential reinforcing bar; 62. a second circumferential reinforcing bar; 63. a third circumferential reinforcing steel bar; 7. a housing; 71. a screw; 72. a drive shaft; 73. twisting the block; 74. a first bevel gear; 75. a second bevel gear; 76. a screw block; 77. and a push rod.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The first embodiment, a water delivery tunnel concrete lining induced joint structure, as shown in fig. 1 and 2, includes tunnel 1, the concrete lining 2 that sets up at 1 inner wall of tunnel and the induced joint structure of setting on concrete lining 2, wherein, the shape that concrete lining 2 corresponds 1 inner wall of tunnel is the annular, and induced joint structure is provided with a plurality ofly along concrete lining 2's vertical. The induced joint structure includes the structural reinforcement that sets up in concrete lining 2, buries the waterstop 3 of burying in concrete lining 2 and sets up the circumferential structure seam 4 in concrete lining 2 one side, and wherein, the circumferential structure seam 4 sets up the one side of keeping away from 1 inner wall of tunnel on concrete lining 2. Specifically, the method for opening the circumferential structural seam 4 comprises the following steps: before the concrete lining 2 is poured, the annular strip is installed at the position where the annular structural joint 4 needs to be formed so as to reserve the shape of the annular structural joint 4, and the annular strip is removed along with the template.
As shown in fig. 2 and 3, the structural reinforcement includes longitudinal stress reinforcement 5 and circumferential stress reinforcement 6, and the concrete lining 2 reduces the reinforcement amount of the longitudinal stress reinforcement 5 at the position of the circumferential structural joint 4. The induced joint structure further comprises a fixing piece arranged in the concrete lining 2 and used for fixing the water stop belt 3. Setting up of induced joint structure makes concrete lining 2 thickness reduce on circumferential structure seam 4 positions, and make concrete lining 2 reduce the bearing capacity on circumferential structure seam 4's position, when water delivery tunnel 1 bears inside and outside water pressure, induced joint structure can induce concrete lining 2 to split at circumferential structure seam 4's position, reduce the condition that random fracture appears in concrete lining 2, when concrete lining 2 is in circumferential structure seam 4's position department fracture, 3 bury underground of waterstop can avoid concrete lining 2 to appear the condition of easily seeping water in fracture position department.
As shown in fig. 2 and 3, the hoop stressed steel bars 6 comprise a first hoop steel bar 61 group and a second hoop steel bar 62 group, the first hoop steel bar 61 group and the second hoop steel bar 62 group are arranged at the radial interval of the inner wall of the concrete lining 2, concretely, the distance between the first hoop steel bar 61 group and the inner wall of the tunnel 1 is greater than the distance between the second hoop steel bar 62 group and the inner wall of the tunnel 1, and a plurality of first hoop steel bars 61 and a plurality of second hoop steel bars 62 are longitudinally arranged in the concrete lining 2. Vertical atress reinforcing bar 5 includes first longitudinal reinforcement 51 group and second longitudinal reinforcement 52 group, first longitudinal reinforcement 51 group and second longitudinal reinforcement 52 group are radially spaced apart in the inside of concrete lining 2 and are set up, first longitudinal reinforcement 51 welds the outside at first hoop reinforcing bar 61, many first longitudinal reinforcements 51 set up along the hoop interval of first hoop reinforcing bar 61, second longitudinal reinforcement 52 welds the outside at second hoop reinforcing bar 62, many second longitudinal reinforcements 52 set up along the hoop interval of second hoop reinforcing bar 62. First longitudinal reinforcement 51 is at the disconnection of annular structure seam 4 department, and the disconnection end body coupling of first longitudinal reinforcement 51 has U-shaped turning muscle 53, turns into toward the inside of concrete lining 2 with the non-connection end of first longitudinal reinforcement 51 on the U-shaped turning muscle 53, and the opening of U-shaped turning muscle 53 deviates from annular structure seam 4, and further, waterstop 3 is buried underground between U-shaped turning muscle 53 and second annular reinforcement 62. Hoop atress reinforcing bar 6 and vertical atress reinforcing bar 5 have constituteed the constructional steel bar of concrete lining 2 for concrete lining 2 has sufficient structural strength, and wherein, the disconnection department of first longitudinal reinforcement 51 has reduced the quantity of concrete lining 2 at the vertical atress reinforcing bar 5 of hoop structure seam 4 department, thereby has reduced the bearing capacity of concrete lining 2 in hoop structure seam 4 department, with the crack of induced concrete lining 2 in hoop structure seam 4 department. The U-shaped turning rib 53 turns into the concrete lining 2 to provide a limit space for embedding the water stop band 3, so that the water stop band 3 can be conveniently fixed by a constructor.
As shown in fig. 2 and 3, the fixing member is an open stirrup 31, and both sides of the water stop 3 are tightly pressed by the open stirrup 31. Opening stirrup 31 and the welding of U-shaped turn muscle 53, specifically, opening stirrup 31 is the shape, U-shaped turn muscle 53 includes the vertical muscle of two perpendicular to horizontal muscle of horizontal muscle, the both ends of opening stirrup 31 tighten up on two vertical muscle of U-shaped turn muscle 53, the position of adjusting opening stirrup 31 makes the both sides of waterstop 3 all support tightly have opening stirrup 31 after, weld the opening stirrup 31 of 3 both sides of waterstop on the vertical muscle of U-shaped turn muscle 53 again, thereby under the condition that does not damage 3 active part of waterstop, make waterstop 3 press from both sides tightly between the opening stirrup 31 of its both sides, thereby fixedly bury the waterstop 3 underground.
As shown in fig. 2 and 3, the longitudinal bar far from the first longitudinal bar 51 on the U-shaped crutch bar 53 is connected with a third circumferential bar 63, and the third circumferential bar 63 is disposed between the first circumferential bar 61 and the second circumferential bar 62. The setting of third hoop reinforcing bar 63 can avoid U-shaped turning muscle 53 the condition that easily warp to appear, can strengthen the structural strength of the concrete lining 2 of circumferential structural joint 4 both sides simultaneously, has strengthened the induced seam structure and has located the induced effect of fracture at circumferential structural joint 4 to concrete lining 2.
As shown in fig. 2, the circumferential structural joint 4 is filled with a waterproof flexible material 41, and the waterproof flexible material 41 may be made of a waterproof material having sufficient deformability and good adhesion to the concrete lining 2, such as polysulfide building sealant, polyurethane, or silica gel. The waterproof flexible material 41 enables the circumferential structural joint 4 to have good waterproof performance, and meanwhile, good deformability is kept, so that crack induction of the concrete lining 2 by the joint structure is facilitated.
As shown in fig. 2 and 3, the water stop 3 is a rubber water stop 3, and the rubber water stop 3 has good elasticity, wear resistance, aging resistance and tear resistance, good waterproof performance, strong adaptive deformability and is convenient for construction personnel to bury the water stop 3 in the annular concrete lining 2. In this embodiment, the lap joint between the adjacent water stop bands 3 is formed by a hot-press vulcanization method.
The implementation principle of the embodiment is as follows: induced joint structure's setting makes concrete lining 2 thickness reduce on circumferential structure seam 4's position, and make concrete lining 2 reduce the bearing capacity on circumferential structure seam 4's position, when water delivery tunnel 1 bears inside and outside water pressure, induced joint structure can induce concrete lining 2 to split at circumferential structure seam 4's position, reduce the condition that concrete lining 2 appears random fracture, when concrete lining 2 is when the position department fracture of circumferential structure seam 4, bury underground of waterstop 3 and can avoid concrete lining 2 to appear the condition of easily seeping water in the position department of fracture.
The second embodiment is a concrete lining induced joint structure of a water delivery tunnel, which is different from the first embodiment in that, as shown in fig. 4 and 5, the fixing member is a square pipe 32, the square pipe 32 is a long-strip pipe with a rectangular cross section, and the two sides of the water stop 3 are respectively tightly abutted against the square pipe 32. Specifically, the square tube 32 is connected to the U-shaped bent rib 53 and the second longitudinal rib 52 at a position away from the first longitudinal rib, and the square tube 32 is detachably connected to a pushing member for pushing the pushing member against the water stop 3.
As shown in fig. 5 and 7, the pushing member includes a housing 7, the housing 7 is in a hollow rectangular block shape, one end of the housing 7, which is far away from the square tube 32, is abutted against the second circumferential reinforcing steel bar 62 and the third circumferential reinforcing steel bar 63, a screw rod 71 is rotatably connected in the housing 7, an axis of the screw rod 71 is parallel to the first longitudinal reinforcing steel bar 51 and the second longitudinal reinforcing steel bar 52 at the same time, a driving shaft 72 is rotatably arranged on the housing 7, one end of the driving shaft 72 penetrates into the housing 7, the other end of the driving shaft is located outside the housing 7, an outer end of the driving shaft 72 is fixedly connected with a screwing block 73, and the screwing block 73. The driving shaft 72 drives the screw 71 to rotate through a bevel gear structure, which includes a first bevel gear 74 and a second bevel gear 75, the first bevel gear 74 is coaxially disposed at the inner end of the driving shaft 72, the second bevel gear 75 is coaxially disposed on the screw 71, and the first bevel gear 74 is engaged with the second bevel gear 75, so that when the driving shaft 72 rotates, the screw 71 can be driven to rotate through the transmission of the first bevel gear 74 and the second bevel gear 75. A screw block 76 is slidably arranged in the shell 7, the screw block 76 is rectangular, the side wall of the screw block 76 is attached to the inner wall of the shell 7, a threaded hole matched with the screw rod 71 is formed in the center of the screw block 76, and the screw block 76 is in threaded connection with the screw rod 71. The one end that is close to square pipe 32 on the screw piece 76 is connected with ejector pin 77, and in this embodiment, ejector pin 77 is the rectangle pole, and wherein, the one end of keeping away from screw piece 76 on the ejector pin 77 runs through casing 7, has seted up the scale mark on the ejector pin 77, and the outer end and the square pipe 32 detachably of ejector pin 77 are connected.
Specifically, as shown in fig. 6, two mounting plates 321 are disposed on the side wall of the square tube 32 facing the housing 7 at intervals, the outer end of the push rod 77 is embedded in the two mounting plates 321, and the push rod 77 is connected to the two mounting plates 321 by bolts.
The implementation principle of the embodiment is as follows: when the water stop 3 is fixed, the square pipe 32 on both sides of the water stop 3 is simultaneously and tightly pressed against the water stop 3 by the pushing piece, and then the square pipe 32 is respectively connected with the U-shaped turning rib 53 and the second longitudinal reinforcing steel bar 52. In the abutting process, the screw rod 71 is driven to rotate by rotating the driving shaft 72, the screw block 76 is moved in the shell 7 by the rotation of the screw rod 71, so that the ejector rod 77 drives the square pipe 32 connected with the ejector rod to abut against the water stop 3, the pushing of the pushing piece is convenient for a constructor to leave two hands free to connect the square pipe 32, and meanwhile, the connection process is more stable. In addition, because the setting of the scale mark on ejector pin 77 for constructor can be through calibrating the scale on two ejector pins 77 so that waterstop 3 is located the intermediate position of induced seam structure department, the accurate location of waterstop 3 before fixed of being convenient for.
And after the square pipe 32 is tightly pressed on the water stop 3 by the pushing piece and the square pipe 32 is connected with the U-shaped turning rib 53 and the second longitudinal steel 52 rib, the pushing piece and the square pipe 32 can be detached so as to recycle the pushing piece.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides an induced seam structure of water delivery tunnel concrete lining which characterized in that: the concrete-filled steel tube tunnel comprises a tunnel (1), a concrete lining (2) arranged on the inner wall of the tunnel (1) and an induced joint structure arranged on the concrete lining (2), wherein the induced joint structure comprises structural steel bars arranged in the concrete lining (2), a water stop belt (3) buried in the concrete lining (2) and an annular structural joint (4) arranged on one surface of the concrete lining (2);
the structural steel bars comprise longitudinal stress steel bars (5) and circumferential stress steel bars (6), and the concrete lining (2) reduces the steel bar amount of the longitudinal stress steel bars (5) at the positions of the circumferential structural joints (4);
the induced joint structure further comprises a fixing piece arranged in the concrete lining (2) and used for fixing the water stop belt (3).
2. The concrete lining induced joint structure of the water conveying tunnel according to claim 1, characterized in that: the annular stressed steel bars (6) comprise a first annular steel bar (61) group and a second annular steel bar (62) group, the first annular steel bar (61) group and the second annular steel bar (62) group are arranged in the concrete lining (2) at intervals in the radial direction, and a plurality of first annular steel bars (61) and a plurality of second annular steel bars (62) are longitudinally arranged in the concrete lining (2);
the longitudinal stressed steel bars (5) comprise a first longitudinal steel bar (51) group and a second longitudinal steel bar (52) group, the first longitudinal steel bar (51) group and the second longitudinal steel bar (52) group are arranged in the concrete lining (2) at intervals in the radial direction, the first longitudinal steel bar (51) is connected to the outer side of a first circumferential steel bar (61), a plurality of first longitudinal steel bars (51) are arranged at intervals in the circumferential direction of the first circumferential steel bar (61), the second longitudinal steel bar (52) is connected to the outer side of a second circumferential steel bar (62), and a plurality of second longitudinal steel bars (52) are arranged at intervals in the circumferential direction of the second circumferential steel bar (62);
the first longitudinal steel bar (51) is disconnected at the circumferential structural joint (4), the disconnected end of the first longitudinal steel bar (51) is connected with a U-shaped turning bar (53), the non-connected end, connected with the first longitudinal steel bar (51), of the U-shaped turning bar (53) turns into the concrete lining (2), and the water stop belt (3) is buried between the U-shaped turning bar (53) and the second circumferential steel bar (62).
3. The concrete lining induced joint structure of the water conveying tunnel according to claim 2, characterized in that: the fixing piece is an opening stirrup (31), the two sides of the water stop (3) are tightly propped against the opening stirrup (31), and the opening stirrup (31) is connected with the U-shaped turning rib (53).
4. The concrete lining induced joint structure of the water conveying tunnel according to claim 2, characterized in that: the part of keeping away from first longitudinal reinforcement (51) on U-shaped turning muscle (53) is connected with third hoop reinforcing bar (63), third hoop reinforcing bar (63) set up between first hoop reinforcing bar (61) and second hoop reinforcing bar (62).
5. The concrete lining induced joint structure of the water conveying tunnel according to claim 1, characterized in that: and waterproof flexible materials (41) are filled in the circumferential structural seams (4).
6. The concrete lining induced joint structure of the water conveying tunnel according to claim 1, characterized in that: the water stop (3) is a rubber water stop (3).
7. The concrete lining induced joint structure of the water conveying tunnel according to claim 4, characterized in that: the fixing piece is a square tube (32), the square tube (32) is tightly propped against the two sides of the water stop (3), the square tube (32) is respectively connected with the U-shaped turning rib (53) and the second longitudinal steel bar (52), and the square tube (32) is detachably connected with a pushing piece which tightly props against the water stop (3);
the pushing piece comprises a shell (7), one end of the shell (7) far away from the square pipe (32) is abutted against a second circumferential reinforcing steel bar (62) and a third circumferential reinforcing steel bar (63), a screw rod (71) is connected in the shell (7) in a rotating manner, the axis of the screw rod (71) is parallel to a first longitudinal reinforcing steel bar (51) and a second longitudinal reinforcing steel bar (52), a driving shaft (72) is arranged on the shell (7), the driving shaft (72) drives the screw rod (71) to rotate through a bevel gear structure, a screw block (76) is arranged in the shell (7) in a sliding manner, the screw block (76) is in threaded connection with the screw rod (71), one end of the screw block (76) close to the square pipe (32) is connected with a mandril (77), one end of the mandril (77) far away from the screw block (76) penetrates through the shell (7), and a scale mark is arranged on the, the outer end of the ejector rod (77) is detachably connected with the square pipe (32).
8. The concrete lining induced joint structure of the water delivery tunnel according to claim 7, characterized in that: two mounting plates (321) are arranged on the side wall of the square tube (32) facing the shell (7) at intervals, the outer end of the ejector rod (77) is embedded into the two mounting plates (321), and the ejector rod (77) is connected with the two mounting plates (321) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010702135.8A CN111794776A (en) | 2020-07-18 | 2020-07-18 | Induced joint structure of water delivery tunnel concrete lining |
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| CN202010702135.8A CN111794776A (en) | 2020-07-18 | 2020-07-18 | Induced joint structure of water delivery tunnel concrete lining |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320344A (en) * | 2021-12-31 | 2022-04-12 | 中铁二院工程集团有限责任公司 | Tunnel lining structure capable of inducing deformation and rapid repairing method thereof |
| CN117128869A (en) * | 2023-09-21 | 2023-11-28 | 中国水利水电科学研究院 | System and method for monitoring cracking width of reinforced concrete lining crack of high-pressure tunnel |
-
2020
- 2020-07-18 CN CN202010702135.8A patent/CN111794776A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320344A (en) * | 2021-12-31 | 2022-04-12 | 中铁二院工程集团有限责任公司 | Tunnel lining structure capable of inducing deformation and rapid repairing method thereof |
| CN114320344B (en) * | 2021-12-31 | 2023-10-03 | 中铁二院工程集团有限责任公司 | Tunnel lining structure capable of inducing deformation and rapid repair method thereof |
| CN117128869A (en) * | 2023-09-21 | 2023-11-28 | 中国水利水电科学研究院 | System and method for monitoring cracking width of reinforced concrete lining crack of high-pressure tunnel |
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