Cast-in-place protective shed tunnel support formwork system

Abstract

The utility model provides a cast-in-place protective shed tunnel support formwork system which is characterized in that an inner formwork is of an arch structure corresponding to the inner wall of a protective shed tunnel, and a disc buckle support is arranged in the inner formwork; the outer molds are arranged on the two sides of the inner mold, and the parts, corresponding to the vault of the protective shed tunnel, of the outer molds incline towards the middle to form the outer surface of the protective shed tunnel. The pull rods are uniformly distributed on the outer mold and are perpendicular to the outer mold, and the two ends of the pull rods penetrate through the outer mold and the inner mold respectively and then are connected with the limiting nuts; the limiting rod is located above the outer mold, connecting plates corresponding to the outer mold are arranged at the two ends of the limiting rod, and the connecting plates are matched with the inclination angle of the upper half portion of the outer mold and connected with the upper half portion through limiting nuts at the ends of the pull rods. The outer mold and the inner mold which are connected through the connecting rod are arranged, the outer mold obliquely extends to form the arch crown corresponding to the outer wall of the protective shed tunnel, an arch-shaped template does not need to be arranged, the construction efficiency can be improved, the upper end of the outer mold is open, limiting is conducted through the limiting rod, the stability of the outer mold is improved, and the construction quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of protective shed hole construction, specifically relates to a cast-in-situ protective shed hole support formwork system. BACKGROUND

[0002] With the rapid development of high-speed rail construction, high-speed rail needs to be constructed in the region with large wind pressure and snow pressure or the region with high incidence of rockfall, and the current protective shed hole generally adopts reinforced concrete structure, since the protective shed hole is an arch structure, the installation of the protective shed hole formwork is difficult, and the unstable support can easily lead to formwork slurry running or deformation, thereby affecting the poor construction quality and leading to low construction efficiency of the protective shed hole.

[0003] Therefore, it is necessary to provide an improved technical solution for the above-mentioned prior art. UTILITY MODEL CONTENT

[0004] The utility model discloses a cast-in-situ protective shed hole support formwork system.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A cast-in-situ protective shed hole support formwork system comprises:

[0007] An inner formwork is an arch structure corresponding to the inner wall of the protective shed hole, and a disc buckle support is arranged inside the inner formwork;

[0008] An outer formwork is arranged on both sides of the inner formwork, and the part of the outer formwork corresponding to the arch top of the protective shed hole is inclined to the middle part to form the outer surface of the protective shed hole;

[0009] A plurality of pull rods are uniformly distributed on the outer formwork, the pull rods are perpendicular to the outer formwork, and the two ends of the pull rods are connected to limiting nuts after penetrating through the outer formwork and the inner formwork respectively;

[0010] A limiting rod is located above the outer formwork, and the two ends of the limiting rod are provided with connecting plates corresponding to the outer formwork, the connecting plates are adapted to the inclination angle of the upper half part of the outer formwork, and the connecting plates are connected through the limiting nuts at the end of the pull rod.

[0011] Preferably, the disc buckle support comprises multiple spans in the extension direction of the protective shed hole, and horizontal rods and inclined rods are arranged on the disc buckle support in multiple spans by the mode of interval arrangement.

[0012] Preferably, the horizontal rod spacing of the disc buckle support corresponding to the lower part of the protective shed hole is adapted to the width of each span of the disc buckle support, and the horizontal rod spacing of the disc buckle support corresponding to the arch top part of the protective shed hole is one half or one third of the width of each span of the disc buckle support.

[0013] Preferably, the inclined rods are symmetrically distributed about the center line of the protective shed hole, and the lower ends of the inclined rods are uniformly distributed to both sides of the center line of the protective shed hole from the fulcrum of the disc buckle support.

[0014] Preferably, the middle part of the limiting rod is provided with a shaped rod in the form of a ridge to limit the upper surface of the protective shed hole.

[0015] Preferably, the inner side of the inner mold is provided with a distribution beam uniformly distributed along the circumference of the protective shed hole, and the outer side of the disc buckle support is provided with an arch-shaped support corresponding to the distribution beam.

[0016] Preferably, the two sides of the pull rod are provided with a stiffener corresponding to the arch-shaped support, and the pull rod is stopped by a limiting nut, and the two sides of the limiting nut are bent to the stiffener to limit the stiffener.

[0017] Preferably, the outer support frame on both sides of the protective shed hole is provided with a positioning rod abutting against the outer surface of the outer mold.

[0018] Beneficial effects: The outer mold and the inner mold connected by the connecting rod are provided, the outer mold forms a vault corresponding to the outer wall of the protective shed hole by inclined extension, without the need to set an arch-shaped formwork, thereby improving the construction efficiency, the upper end of the outer mold is open and limited by the limiting rod, thereby improving the stability of the outer mold and ensuring the construction quality. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings accompanying the specification of this application form a part of this application and serve to further provide a further understanding of the present application, the illustrative embodiments of the present application and its description serve to explain the present application, and do not constitute an improper limitation on the present application. Among them:

[0020] Figure 1 The structural diagram of the formwork system in the specific embodiment provided by the present application is shown.

[0021] In the figure: 1, outer support frame; 2, limiting rod; 3, connecting plate; 4, shaped rod; 5, outer mold; 6, pull rod; 7, disc buckle support; 8, horizontal rod; 9, inclined rod; 10, inner mold; 11, distribution beam; 12, arch-shaped support; 13, positioning rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0023] In the description of the utility model, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and do not require the utility model to be necessarily constructed and operated in a particular orientation, therefore, cannot be understood as limiting the utility model. The terms "connected", "connected" used in the utility model should be understood broadly, for example, can be fixed connection, can also be detachable connection, can be directly connected, can also be indirectly connected through intermediate components, and the specific meaning of the above terms can be understood according to the specific circumstances for ordinary skilled persons in the art.

[0024] The utility model will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0025] As Figure 1 shown, a cast-in-place protective shed hole support formwork system, including inner mode 10, outer mode 5, pull rod 6, limiting rod 2, protective shed hole is the shape of arch, including lower part main part and upper part vault, the pouring cavity is formed between inner mode 10, outer mode 5, to form protective shed hole in this way, inner mode 10 is the arched structure corresponding to the inner wall of protective shed hole, so that the inner surface of protective shed hole can be formed, inner mode 10 is spliced by multiple pieces of bamboo plywood or metal plate, the part corresponding to the vault is made into the specified shape by pre-processing, disc buckle support 7 is arranged in inner mode 10, disc buckle support 7 is full hall erection, disc buckle support 7 includes multiple spans in the extension direction of protective shed hole, to realize the stable support of inner mode 10, for bearing the dead weight of concrete pouring, outer mode 5 is arranged on both sides of inner mode 10, the height of outer mode 5 is not less than the vault elevation of protective shed hole, the part of outer mode 5 corresponding to the vault of protective shed hole is inclined to the middle, to form the outer surface of protective shed hole, outer mode 5 is bent through the middle to adapt to the vault, so that outer mode 5 can be spliced by straight plate, to reduce the formwork processing difficulty and installation difficulty.

[0026] A plurality of pull rods 6 are evenly distributed on the outer mold 5, the pull rod 6 is a lead screw, the pull rod 6 is perpendicular to the outer mold 5, so as to ensure the tensioning and limiting of the outer mold 5, the two ends of the pull rod 6 are connected with the limiting nuts after penetrating through the outer mold 5 and the inner mold 10, so as to ensure the stability of the outer mold 5, the limiting rod 2 is located above the outer mold 5, the two ends of the limiting rod 2 are provided with the connecting plates 3 corresponding to the outer mold 5, the connecting plates 3 and the limiting plates are made of metal material and are fixed by welding, the connecting plate 3 is used for connecting the upper end of the outer mold 5, and the corresponding pull rod 6 of the connecting plate 3 penetrates through the connecting plate 3 and is connected with the limiting nut. Thus, the outer mold 5 cannot be deformed by force, the connecting plate 3 is matched with the inclination angle of the upper half of the outer mold 5, and is connected through the limiting nut at the end of the pull rod 6. For example, one limiting rod 2 is arranged corresponding to each cross disc buckle support 7, or one limiting rod 2 is arranged every one or more spans. The limiting rod 2 and the connecting plate 3 are made of metal material and are fixed by welding.

[0027] In an optional implementation, the both sides of the protective shed hole are also provided with outer support frames 1, the outer support frame 1 can be a scaffold or a disc buckle support 7, the outer support frame 1 is supported by the concrete hardening on the both sides of the protective shed hole, the outer surface of the outer mold 5 is provided with a plurality of positioning rods 13, for example, one positioning rod 13 is arranged corresponding to each cross disc buckle support 7, the positioning rod 13 is installed after the installation of the outer mold 5, so as to fix the outer mold 5 as a whole, the length of the limiting rod 2 is matched with the distance between the two outer support frames 1, so that the limiting rod 2 can be connected on the outer support frame 1 in a detachable manner to realize the fixing.

[0028] In an optional implementation, the disc buckle support 7 includes multiple spans in the extension direction of the protective shed hole, the horizontal rods 8 and the inclined rods 9 are arranged on the multiple-span disc buckle support 7 by the interval arrangement, the interval distance of the horizontal rod 8 corresponding to the lower main part of the protective shed hole is matched with the width of each span of the disc buckle support 7, and the interval distance of the horizontal rod 8 corresponding to the arch top part of the protective shed hole is one half or one third of the width of each span of the disc buckle support 7. Specifically, the main part of the horizontal rod 8 has an interval distance of 1.5 m, the main part and the adjacent arch top part have an interval distance of 1 m, and the topmost layer has a step distance of 0.5 m. The vertical inclined rod 9 is arranged at an interval of one span according to the specification, the inclined rod 9 is symmetrically distributed about the center line of the protective shed hole, and the fulcrums of the inclined rod 9 and the disc buckle support 7 are uniformly distributed from the center line of the protective shed hole to both sides, so as to ensure balanced stress and improve the stability of the disc buckle support 7.

[0029] In an optional implementation, the middle part of the limiting rod 2 is provided with a shaped rod 4, the shaped rod 4 is in the shape of a ridge or an arc, so as to limit the upper surface of the protective shed hole, thereby facilitating the pouring quantity control in the pouring process, and the shaped rod 4 can be used as a reference for the top surface collection, thereby improving the aesthetic appearance and flatness of the whole modeling.

[0030] The middle part of the limiting rod 2 is provided with a positioning plate extending along the longitudinal direction, the positioning plate is provided with a strip-shaped hole extending along the longitudinal direction, and the forming rod 4 is connected in the strip-shaped hole through bolts, so that the limiting rod 2 can be adjusted in the longitudinal direction.

[0031] In an optional embodiment, the inner mold 10 is a wood or metal plate, the inner side of the inner mold 10 is provided with distribution beams 11 uniformly distributed along the circumference of the shelter hole, the distribution beams 11 are 100mm*100mm square wood small beams, the interval is about 20cm, the outer side of the disc buckle support 7 is provided with arched support members 12 corresponding to the distribution beams 11, the arched support members 12 are welded by I-shaped steel, so as to realize support.

[0032] The two sides of the pull rod 6 are provided with stiffening rods corresponding to the arched support members 12, the stiffening rods can be steel pipes, the pull rod 6 is limited by a limiting nut, and the two sides of the limiting member are bent towards the stiffening rods to form an arc or a C-shaped corresponding to the stiffening rods, so as to limit the stiffening rods.

[0033] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model is within the protection scope of the utility model.

Claims

1. A cast-in-place protective shed tunnel support formwork system, characterized in that, The utility model relates to a kind of prefabricated protective shed hole forming device, including: Inner mode, the inner mode is the arch structure of corresponding protective shed hole inner wall, is provided with disc buckle support inside the inner mode; Outer mode, the outer mode is set in the both sides of the inner mode, the outer mode corresponding protective shed hole vault part is inclined to middle part, to form protective shed hole outer surface; Pull rod, multiple pull rods are uniformly distributed on the outer mode, the pull rod is perpendicular to the outer mode, the both ends of the pull rod are connected with limiting nut after passing through the outer mode and the inner mode respectively; Limiting rod, the limiting rod is located above the outer mode, limiting rod both ends are equipped with the connecting plate corresponding the outer mode, the connecting plate is adapted with the upper half part of the outer mode inclination angle, and is connected by the limiting nut of pull rod end portion.

2. The cast-in-place shelter-tunnel support formwork system according to claim 1, characterized in that, The disc buckle support includes multiple spans in the extension direction of protective shed hole, and horizontal rods and inclined rods are arranged on the disc buckle support in multiple spans by interval arrangement.

3. The cast-in-place shelter tunnel support formwork system according to claim 2, wherein, The horizontal rod spacing of the disc buckle support corresponding to the lower part of protective shed hole is adapted with the width of each span disc buckle support, and the horizontal rod spacing of the disc buckle support corresponding to the vault part of protective shed hole is one half or one third of the width of each span disc buckle support.

4. The cast-in-place shelter tunnel support formwork system according to claim 2, wherein, The inclined rods are symmetrically distributed about the center line of protective shed hole, and the fulcrums of the inclined rods are uniformly distributed to both sides from the center line of protective shed hole.

5. The cast-in-place shelter tunnel shoring formwork system according to claim 1, wherein, The middle part of the limiting rod is provided with a shaped rod, which is in the shape of a roof ridge to limit the upper surface of the protective shed hole.

6. The cast-in-place shelter tunnel shoring formwork system according to claim 1, wherein, The inner side of the inner mode is provided with distribution beams uniformly distributed along the circumference of the protective shed hole, and the outer side of the disc buckle support is provided with arch-shaped support members corresponding to the distribution beams.

7. The cast-in-place shelter tunnel shoring formwork system according to claim 1, wherein, The both sides of the pull rod are provided with stiffening rods corresponding to the arch-shaped support members, the pull rod is blocked by a limiting nut, and the both sides of the limiting member are bent towards the stiffening rods to limit the stiffening rods.

8. The cast-in-place shelter tunnel shoring formwork system according to claim 1, wherein, The both sides of the protective shed hole are also provided with outer support frames, and the outer support frames are provided with positioning rods abutting against the outer surface of the outer mode.

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