CN207160064U - Template system of open cut tunnel arc roof water proof coating - Google Patents

Abstract

A formwork system for the waterproof protective layer of the arc-shaped roof of an open-cut tunnel, including a left formwork structure, a right formwork structure, cushion blocks respectively arranged between the two formwork structures and the arc-shaped roof, and connected between the upper ends of the two formwork structures The connecting components between them; the vertical section of the left formwork structure is arc-shaped, and its arc is compatible with the arc of the left side of the arc-shaped top plate; the vertical section of the right formwork structure is arc-shaped, and its arc is in line with the arc The radian on the right side of the top plate is suitable; the connecting assembly includes connecting rods and connecting bolts; there is a group of connecting rods arranged in parallel longitudinally at intervals above the top of the arc-shaped top plate and between two formwork structures, each of which The connecting rod is arc-shaped, and its radian is adapted to the radian of the top outer surface of the arc-shaped top plate. The utility model solves the technical problems that the concrete is easy to fall off, the concrete is not dense and the rebound is serious when the concrete is poured in the traditional construction method of the arc-shaped roof waterproof protective layer.

Description

A formwork system for the waterproof protective layer of the curved roof of open-cut tunnels

technical field

The utility model relates to a template structure for a waterproof protective layer, in particular to a template system for a waterproof protective layer of an arc-shaped top plate of an open-cut tunnel.

Background technique

In the construction of open-cut tunnels, for the construction of the waterproof protective layer of the curved roof, due to the steep radian, the concrete waterproof protective layer is easy to fall off from the waterproof base surface during pouring, resulting in the construction of the waterproof protective layer cannot be carried out according to the thickness designed in the drawing; but If sprayed concrete is used for construction, there will be serious technical problems such as uncompacted concrete, dust pollution and rebound.

Utility model content

The purpose of this utility model is to provide a formwork system for the waterproof protective layer of the arc-shaped roof of the open-cut tunnel. It is necessary to solve the problems of the traditional arc-shaped roof waterproof protective layer construction method when the concrete is easy to fall off, the concrete is not dense and the rebound is relatively poor. Serious technical problem.

In order to achieve the above object, the utility model adopts the following technical solutions.

A formwork system for the waterproof protective layer of the arc-shaped roof of an open-cut tunnel, which is supported on the outside of the arc-shaped roof, including a left formwork structure, a right formwork structure, and cushion blocks respectively arranged between the two formwork structures and the arc-shaped roof and a connection assembly connected between the upper ends of the two formwork structures; the left formwork structure is arranged on the left side of the arc-shaped roof, its lower end is fixed on the ground on the left side of the arc-shaped roof by a fixing piece, and the upper end extends to the arc-shaped roof The length of the arc line between the upper part and the top of the arc roof is 3200mm~3600mm, the vertical section of the left formwork structure is arc-shaped, and its radian is compatible with the arc of the left side of the arc roof; The above-mentioned right formwork structure is set on the right side of the arc-shaped roof, its lower end is fixed on the ground on the right side of the arc-shaped roof by a fixing piece, and the upper end extends to the upper part of the arc-shaped roof and the length of the arc line between the top of the arc-shaped roof is 3200mm~3600mm, the vertical section of the right formwork structure is arc-shaped, and its arc is adapted to the arc on the right side of the arc-shaped top plate; the connecting assembly includes a connecting rod and a connecting bolt; the connecting rod has a The groups are set at intervals above the top of the arc-shaped roof and between the two formwork structures along the longitudinal direction, wherein each connecting rod is arc-shaped, and its radian is adapted to the arc of the top outer surface of the arc-shaped roof; the two connecting bolts One group is correspondingly connected between the left template structure and the left end of the connecting rod, and the other group is correspondingly connected between the right template structure and the right end of the connecting rod.

Preferably, the pads are arranged at intervals along the outer surface of the arc-shaped roof, and the height of the pads is adapted to the thickness of the waterproof protective layer to be poured.

Preferably, the cushion block is a cement cushion block or a concrete cushion block, and the cushion block and the arc-shaped roof are connected by an adhesive material.

Preferably, the left formwork structure and the right formwork structure both include arc-shaped formwork panels, arc-shaped sub-keels pressed on the outside of the formwork panel along the longitudinal parallel intervals, and connected in parallel and intervals along the arc direction of the arc-shaped roof. The longitudinal main keel outside the secondary keel.

Preferably, the distance between two vertically adjacent sub-keels in the left formwork structure and the right formwork structure is 700mm-800mm.

Preferably, the distance between two adjacent main keels in the left formwork structure and the right formwork structure is both 800mm-900mm.

Preferably, the template panel is wood plywood or bamboo plywood, and there are perforations on the formwork panel corresponding to the position connected with the secondary keel; the secondary keel is a steel bar or steel pipe, and the secondary keel passes through the perforated The steel wire in the formwork panel is bound and connected; the main keel is a steel rod, and the main keel and the secondary keel are welded and connected.

Preferably, main keels are arranged on the upper and lower ends of the formwork panels on both sides of the arc-shaped top plate; wherein, holes are arranged longitudinally on the main keels at the upper end of the formwork panel; the holes are arranged correspondingly to the connecting rods; One end of the screw rod of the connecting bolt is welded to the connecting rod on the corresponding side, and the other end of the connecting bolt passes through the hole of the main keel at the upper end of the template panel on the corresponding side, and is fixed by a nut.

Preferably, the fixing piece includes an oil tray arranged horizontally and a steel support connected to one side of the oil tray; one end of the fixing piece provided with the oil tray is pushed against the main keel at the lower end of the formwork panel on the corresponding side, and the fixing piece is set The steel braced end rests on the adjacent concrete side wall.

Compared with the prior art, the utility model has the following characteristics and beneficial effects.

1. The neutral formwork and frame of the utility model can be installed as a whole, easy to operate, easy to reinforce, can be used repeatedly, and the cost is low, which effectively solves the problem of concrete construction of the steeper curved roof concrete waterproof protective layer.

2. The formwork system in the utility model is composed of three parts detachably connected, that is, the left formwork structure, the right formwork structure and the connection assembly; the connection assembly and the left formwork structure are detachably connected by bolts, and the connection assembly and the right formwork The structure can be detachably connected. This connection method makes the formwork system easy to disassemble, can be used repeatedly, and saves construction costs.

3. The bottoms of the left formwork structure and the right formwork structure in the utility model are all tightened by oil trays and steel supports, and the tops of the left formwork structure and the right formwork structure are detachably connected by connecting components. When the concrete pouring is completed and reaches the predetermined age Finally, directly remove the steel support and oil tray at the bottom, remove the nuts on the top of the formwork structure on both sides, pull out the connecting rod connecting the screw rod, lift out the formwork panel, and then enter the construction of the next section of waterproof protection layer; construction It is convenient and effectively improves the construction efficiency.

4. The formwork panels and sub-keels in the utility model are made of materials with high toughness, which can be bent into a curvature suitable for the arc-shaped roof according to the curvature of the outer surface of the arc-shaped roof, and the waterproof protective layer formwork for the arc-shaped roof is solved The technical problem that the bending arc is difficult to control and the support is difficult.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic front view of the structure of the utility model.

Fig. 2 is an enlarged structural schematic diagram of the right template structure of the present invention.

Fig. 3 is a schematic diagram of an enlarged structure of the right template structure and connection component nodes of the present invention.

Reference signs: 1-main keel, 2-secondary keel, 3-formwork panel, 4-connecting rod, 5-connecting bolt, 6-oil tray, 7-pad, 8-steel support, 9-curved roof, 10 - waterproof protective layer.

Detailed ways

As shown in Fig. 1, Fig. 2 and Fig. 3, the formwork system of the arc-shaped roof waterproof protective layer of this open-cut tunnel is supported on the outside of the arc-shaped roof 9, including a left formwork structure and a right formwork structure, which are respectively arranged on The spacer 7 between the two formwork structures and the curved top plate 9 and the connection assembly connected between the upper ends of the two formwork structures; the left formwork structure is arranged on the left side of the curved top plate 9, and its lower end is fixed by a fixture On the ground on the left side of the curved top plate 9, the length of the arc line extending from the upper end to the top of the curved top plate 9 and between the top of the curved top plate 9 is 3200 mm to 3600 mm, and the vertical section of the left formwork structure is arc-shaped, and its radian is adapted to the radian of the left side of the arc-shaped top plate 9; the right formwork structure is arranged on the right side of the arc-shaped top plate 9, and its lower end is fixed on the ground on the right side of the arc-shaped top plate 9 by a fixture, The upper end extends to the top of the arc-shaped top plate 9 and the length of the arc line between the top of the arc-shaped top plate 9 is 3200 mm to 3600 mm. The curvature of the right side is adapted; the connecting assembly includes connecting rods 4 and connecting bolts 5; the connecting rods 4 have a group, arranged in parallel longitudinally on the top of the curved top plate 9, between the two formwork structures; Wherein, each connecting rod 4 is arc-shaped, and its radian is adapted to the radian of the top outer surface of the arc-shaped top plate 9; there are two groups of connecting bolts 5, one of which is correspondingly connected between the left formwork structure and the connecting rod 4 Between the left ends, another group is correspondingly connected between the right formwork structure and the right end of the connecting rod 4 .

Of course, in other embodiments, the lengths of the left formwork structure and the right formwork structure can be determined according to actual construction conditions, as long as the concrete can be blocked during construction and the concrete collapse can be avoided.

In this embodiment, the pads 7 are arranged at intervals along the outer surface of the arc-shaped roof 9 , and the height of the pads 7 is adapted to the thickness of the waterproof protection layer 10 to be poured.

In this embodiment, the cushion block 7 is a cement cushion block or a concrete cushion block, and the cushion block 7 and the arc-shaped top plate 9 are connected by an adhesive material.

In this embodiment, the left formwork structure and the right formwork structure both include an arc-shaped formwork panel 3, an arc-shaped sub-keel 2 arranged on the outside of the formwork panel 3 along the longitudinal parallel interval, and an arc along the arc of the arc-shaped top plate 9. The longitudinal main keel 1 connected to the outer side of the secondary keel 2 in parallel in the line direction.

In this embodiment, the distance between two longitudinally adjacent sub-keels 2 in the left formwork structure and the right formwork structure is 750mm.

Of course, in other embodiments, the distance between the two vertically adjacent secondary keels 2 in the left formwork structure and the right formwork structure can be adjusted according to the actual situation, and the range is 700mm~800mm.

In this embodiment, the distance between two adjacent main keels 1 in the left formwork structure and the right formwork structure is both 850 mm.

Of course, in other embodiments, the distance between two adjacent main keels 1 in the left formwork structure and the right formwork structure can be adjusted according to the actual situation, and the range is 800mm~900mm.

In this embodiment, the template panel 3 is formed by splicing wood plywood with a thickness of 15mm and a length of 6m. There is a perforation at the connection position; the secondary keel 2 is a Φ22 steel bar, and the secondary keel 2 is bound and connected with the formwork panel 3 through the steel wire passing through the perforation; the main keel 1 is made of a 10# channel steel rod, And the main keel 1 and the secondary keel 2 are connected by full welding at the connection part; the main keel 1, the secondary keel 2 and the template panel 3 are connected to form a whole.

Of course, in other embodiments, the template panel 3 can also be a bamboo plywood; the secondary keel 2 can also be a steel pipe; the main keel 1 can also be other shaped steel rods such as I-beam or H-shaped steel or square steel. production.

In this embodiment, the upper and lower ends of the template panels 3 on both sides of the arc-shaped top plate 9 are provided with main keels 1; wherein, the main keels 1 at the upper end of the formwork panels 3 are provided with holes at intervals along the longitudinal direction; The hole is set corresponding to the connecting rod 4; one end of the screw rod of the connecting bolt 5 is welded to the connecting rod 4 on the corresponding side, and the welding adopts single-sided lap welding, and the other end of the connecting bolt 5 passes through the template panel 3 on the corresponding side In the hole of the main keel 1 at the upper end, and fixed by nuts.

In this embodiment, the top of the arc-shaped top plate 9 is located in the space between the left formwork structure and the right formwork structure without formwork support, which is used as a concrete discharge port.

In this embodiment, the fixing member includes an oil tray 6 arranged horizontally and a steel support 8 connected to one side of the oil tray 6; On the main keel 1, one end of the fixing part provided with a steel support 8 is pushed against the adjacent concrete side wall.

In this embodiment, the diameter of the steel support 8 is 48.3 mm.

The construction process of the present utility model comprises steps as follows.

Step 1: Arrange pads 7 at intervals on the outer surface of the arc roof 9, and fix the pads 7 with cement mortar.

Step 2: Lift the spliced left formwork structure and right formwork structure to the left and right sides of the arc-shaped roof 9 by tower crane respectively.

Step 3: First fix the lower part of the two formwork structures, and use steel supports 8 and 6 to reinforce them. One end is placed on the main keel 1 at the lower end of the formwork panel 3 on the corresponding side, and the other end is placed on the adjacent concrete side wall. .

Step 4: Bend the steel bar of the connecting rod 4 into an arc, adjust the positions of the two formwork structures, weld the top of the arc-shaped top plate 9 with the connecting bolts 5 on both sides, and reinforce the upper ends of the formwork structures on both sides.

Step 5: pouring concrete for the waterproof protection layer 10 of the curved roof.

Step 6: demoulding; after the concrete pouring is completed and reaches the predetermined age, remove the bottom steel support and oil tray, release the nuts on the top of the formwork structure, pull out the connecting rod 4, lift out the formwork structures on both sides, and enter the lower Construction of a section of waterproof protection layer 10.

The above-mentioned embodiments are not exhaustive of the specific implementations, and there are other embodiments. The purpose of the above-mentioned embodiments is to illustrate the utility model, rather than limit the scope of protection of the utility model. All applications that are simply changed by the utility model are Fall within the protection scope of the present utility model.

Claims (9)

1. a kind of template system of open trench tunnel curved roof fish tail and waterproof layer, branch is located at curved roof（9）Outside, include Left mould harden structure, right mould harden structure, it is separately positioned on two formwork structures and curved roof（9）Between cushion block（7）And even The connection component being connected between two formwork structure upper ends；It is characterized in that：

The left templates structure setting is in curved roof（9）Left side, its lower end is fixed on curved roof by fixture（9）It is left On the ground of side, upper end extends to curved roof（9）Top and and curved roof（9）The length of curved line between top is 3200mm ~ 3600mm, the vertical section of the left mould harden structure is curved, and its radian and curved roof（9）Left surface Radian is adapted；The right mould harden structure is arranged on curved roof（9）Right side, its lower end are fixed on curved roof by fixture （9）On the ground on right side, upper end extends to curved roof（9）Top and and curved roof（9）The length of curved line between top Spend for 3200mm ~ 3600mm, the vertical section of the right mould harden structure is curved, and its radian and curved roof（9）Right side The radian in face is adapted；

The connection component includes connecting rod（4）And connecting bolt（5）；The connecting rod（4）There is one group, longitudinally parallel Every being arranged on curved roof（9）Between over top, two formwork structures；Wherein every connecting rod（4）It is curved, its radian with Curved roof（9）The radian of top outside be adapted；The connecting bolt（5）Two groups, one of which is correspondingly connected to a left side Formwork structure and connecting rod（4）Left end between, another group is correspondingly connected to right mould harden structure and connecting rod（4）Right-hand member it Between.

A kind of 2. template system of open trench tunnel curved roof fish tail and waterproof layer according to claim 1, it is characterised in that： The cushion block（7）Along curved roof（9）Lateral surface arranged for interval, cushion block（7）Height and fish tail and waterproof layer to be poured （10）Thickness be adapted.

A kind of 3. template system of open trench tunnel curved roof fish tail and waterproof layer according to claim 2, it is characterised in that： The cushion block（7）For spacer or concrete pad, and cushion block（7）With curved roof（9）Between entered by adhesives Row connection.

A kind of 4. template system of open trench tunnel curved roof fish tail and waterproof layer according to claim 3, it is characterised in that： The left mould harden structure and right mould harden structure include the form surfacing of arc（3）, longitudinally parallel interval is pressed on template Panel（3）The secondary joist of the arc in outside（2）And arcuately top plate（9）Arc direction parallel interval be connected to secondary joist （2）Longitudinal main joist in outside（1）.

A kind of 5. template system of open trench tunnel curved roof fish tail and waterproof layer according to claim 4, it is characterised in that： Longitudinally adjacent two secondary joists in the left mould harden structure and right mould harden structure（2）Between spacing be 700mm ~ 800mm.

A kind of 6. template system of open trench tunnel curved roof fish tail and waterproof layer according to claim 5, it is characterised in that： Adjacent two main joists in the left mould harden structure and right mould harden structure（1）Between spacing be 800mm ~ 900mm.

A kind of 7. template system of open trench tunnel curved roof fish tail and waterproof layer according to claim 6, it is characterised in that： The form surfacing（3）For wood glue plate or it is bamboo slab rubber, and form surfacing（3）Upper, corresponding and secondary joist（2）The position of connection Place is provided with perforation；

The secondary joist（2）For reinforcing bar or steel pipe, and secondary joist（2）Pass through the steel wire and form surfacing being through in perforation（3） Colligation connects；

The main joist（1）For shaped steel rod member, and main joist（1）With secondary joist（2）Between be welded to connect.

A kind of 8. template system of open trench tunnel curved roof fish tail and waterproof layer according to claim 7, it is characterised in that： The curved roof（9）The form surfacing of both sides（3）Top and bottom be arranged with main joist（1）；Wherein, positioned at template face Plate（3）The main joist of upper end（1）It is upper, longitudinally spaced to offer hole；Described hole and connecting rod（4）It is correspondingly arranged；

The connecting bolt（5）Screw rod one end and corresponding side connecting rod（4）It is welded to connect, connecting bolt（5）It is another Hold the form surfacing through corresponding side（3）Upper end main joist（1）Hole in, and fixed by nut.

A kind of 9. template system of open trench tunnel curved roof fish tail and waterproof layer according to claim 8, it is characterised in that： The fixture includes horizontally disposed oil support（6）Be connected to oil support（6）The bracing members of side（8）；The fixture is provided with Oil support（6）One end withstand on corresponding side form surfacing（3）The main joist of lower end（1）On, fixture is provided with bracing members（8）One End is withstood on adjacent concrete side wall.