Construction method of multi-strong wind area assembled cover plate

Abstract

The application discloses a kind of multi-strong wind area assembly cover plate, comprising: pedestal, bottom mould, anchorage and comb plate;Wherein, the bottom mould is transversely arranged in the middle of the pedestal, the anchorage is protruding from the upper surface of the pedestal steel cylinder, the pedestal surface is formed with a plurality of reserved holes by being concave downward, reserved hole is around the bottom mould, comb plate is arranged on the pedestal, the head of the comb plate is long strip comb tooth structure, tail part is provided with a plurality of hollow box structure, anchorage top can be fitted into the hollow box tail of comb plate, comb plate can be moved along anchorage to the middle line of pedestal or to the outside of pedestal.This application adopts comb plate, anchor, reserved hole and suspension frame and other devices to form a complete set of prefabricated auxiliary facilities, reasonably increase efficiency design for key processes such as cushion block laying, steel binding, concrete pouring process, reduce the number of hoisting operation, save yard door crane equipment, convenient operation process and operation, to improve the assembly cover plate culvert prefabrication efficiency of window period.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of assembled cover plates. More particularly, the present application relates to an assembled cover plate for a strong wind area and a construction method thereof. BACKGROUND

[0002] In recent years, prefabricated buildings have been widely used in the construction industry due to their convenience and efficiency. Using prefabricated structures can effectively improve the efficiency of on-site operations and reduce the amount of resources occupied on site, which is beneficial for progress control of the construction site. On the other hand, large and heavy prefabricated components also increase the requirements for prefabrication sites, especially in poor weather conditions. Large components are affected by strong winds, rainfall and other weather conditions, and often need to optimize construction measures to improve the efficiency of idle period components during prefabrication. Projects located in strong wind areas in northwest China such as Hami, Xinjiang, have dry climates and sparse vegetation. The strong winds on site result in sandstorms and other disasters, significantly reducing the efficiency of prefabrication. In the past, prefabrication construction often used the method of binding the steel reinforcement framework on the jig frame, then lifting the whole to the pedestal, assembling the formwork, pouring the concrete to form, and then lifting it to the storage area after demolding and curing. The process involves lifting the steel reinforcement framework and the component twice, and the lifting operation cannot be carried out in a strong wind of grade 5 or above, which greatly limits the effective progress of the prefabrication process. At the same time, the setting of a gantry crane in the site requires high anti-overturning requirements, increasing the construction and operation costs of the site. To solve these problems, some projects have designed mobile jigs (CN210025766U, CN206000181U) to bind steel reinforcement directly on the pedestal for segmental beams and prestressed small box girder structures, reducing the number of lifting times and equipment, but there is no design for assembled cover plate culverts. At the same time, the mobile jig is prone to blowing away and overturning in strong winds, and the installation precision control is difficult, so the construction stability under strong wind disturbance is still insufficient.

[0003] In view of the above, in view of the short idle period and frequent strong wind disturbance in the prefabrication construction of the assembled cover plate culvert affected by the strong wind climate, it is urgent to design a safe and stable, economical and practical, efficient and convenient rapid construction method. SUMMARY

[0004] To achieve these objects and other advantages and in accordance with the purpose of the present application, one aspect of the present application provides a prefabricated cover plate for a strong wind area, comprising: a pedestal, a bottom mold, an anchor and a comb plate.

[0005] The bottom die is transversely arranged in the middle of the pedestal, the anchor is a steel cylinder protruding from the upper surface of the pedestal, the surface of the pedestal is downwardly recessed to form a plurality of reserved holes, the reserved holes are arranged around the bottom die, the comb plate is arranged on the pedestal, the head of the comb plate is a long comb-shaped structure, the tail of the comb plate is provided with a plurality of hollow box-shaped structures, the top of the anchor can be fitted into the hollow box-shaped tail of the comb plate, and the comb plate can move towards the middle line of the pedestal or move outward of the pedestal along the anchor.

[0006] According to a preferred embodiment of the present application, the suspension frame is a steel structure suspension frame with a hooked tail, the stirrup is clamped in the tail hook of the suspension frame, the bottom of the lower end of the head of the suspension frame is provided with a perforation for the top layer horizontal reinforcement to pass through, the bottom of the perforation is provided with a one-way valve, the stirrup is clamped along the comb of the comb plate, and the stirrup is fixed by a binding wire.

[0007] According to a preferred embodiment of the present application, the concrete pads are arranged on the surface of the bottom die.

[0008] According to a preferred embodiment of the present application, the bottom layer horizontal reinforcement and the bottom layer reinforcing bar are clamped in the stirrup.

[0009] According to a preferred embodiment of the present application, when the comb plate moves towards the middle line of the pedestal and is tightened, the comb of the comb plate is flush with the edge line of the bottom die; when the comb plate moves outward of the pedestal and is loosened, the comb of the comb plate moves to a certain distance outside the reserved hole.

[0010] On the other hand, a preferred embodiment of the present application provides a construction method of a prefabricated cover plate in a strong wind area, comprising the following steps:

[0011] S1, the bottom die is transversely arranged in the middle of the pedestal, and the comb plate is arranged on the pedestal;

[0012] S2, the concrete pads are arranged on the surface of the bottom die, a plurality of concrete pads are strung up by a long binding wire, the stirrup is clamped along the comb of the comb plate, and the stirrup is fixed by a binding wire;

[0013] S3, the bottom layer horizontal reinforcement and the bottom layer reinforcing bar are clamped in the stirrup, and are then bound and fixed, and the stirrup is bound and fixed with the longitudinal and horizontal steel bars of the ground layer and the concrete pads;

[0014] S4, the suspension frame is suspended on the top of the stirrup and is temporarily fixed, the top layer horizontal reinforcement is clamped in the perforation of the suspension frame and is temporarily fixed, and then the top layer horizontal reinforcement is bound and fixed with the intersection of the top layer steel bars and the concrete pads;

[0015] S5, install concrete cushion block on the side of the pedestal, seal the mold, move the comb plate outward transversely to the pedestal to loosen the binding of the concrete cushion block on the side, then insert the main beam of the formwork into the reserved hole on both sides and the end of the concrete cushion block for fixing the formwork, and after the installation and inspection of the formwork are qualified, the building concrete is formed, and after the formwork is removed and the maintenance is qualified, the formed product is transported to the site by the mobile hoisting equipment through the design lifting point for standby use.

[0016] According to a preferred embodiment of the present application, the method further comprises the following steps:

[0017] S6, if strong wind weather is encountered during construction, the steel wire rope is fixed by using the anchor as a fastening point, and the tarpaulin is fixed on the steel wire rope to protect the pedestal.

[0018] According to a preferred embodiment of the present application, the depth of the anchor is determined according to the wind resistance calculation to ensure sufficient wind resistance.

[0019] The present application at least has the following beneficial effects: the present application adopts a complete prefabricated auxiliary facility composed of a comb plate, an anchor, a reserved hole and a suspension bracket, reasonably designs the key processes such as cushion block laying, steel bar binding and concrete pouring process, reduces the number of hoisting operations, saves the yard gantry crane equipment, and facilitates the operation process and operation, so as to improve the prefabrication efficiency of the empty window period assembly type cover plate culvert, and greatly improves the stability and sensitivity in response to strong wind weather through integrated design, so as to achieve the effects of safety and stability, economy and practicality, high efficiency and convenience.

[0020] Other advantages, objects and features of the present application will be partly embodied in the following description, and partly understood by those skilled in the art through research and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a elevation view of the pedestal in an embodiment of the present application.

[0022] Figure 2 It is a plan view of the pedestal in an embodiment of the present application.

[0023] Figure 3 It is a elevation view of the suspension bracket in an embodiment of the present application.

[0024] Figure 4 It is a plan view of the suspension bracket in an embodiment of the present application.

[0025] Figure 5 It is a string of concrete cushion blocks in an embodiment of the present application.

[0026] Figure 6 It is a laying diagram of concrete cushion blocks in an embodiment of the present application.

[0027] Figure 7 The installation diagram of the stirrup in an embodiment of the present application.

[0028] Figure 8 The installation diagram of the bottom horizontal bar in an embodiment of the present application.

[0029] Figure 9 The vertical surface diagram of the bottom binding of the steel bar framework in an embodiment of the present application.

[0030] Figure 10 The installation diagram of the top horizontal bar in an embodiment of the present application.

[0031] Figure 11 The vertical surface diagram of the installation and forming of the steel bar framework in an embodiment of the present application.

[0032] Figure 12 The vertical surface diagram of the installation of the cover plate formwork in an embodiment of the present application.

[0033] Figure 13 The vertical surface diagram of the pouring and forming of the cover plate in an embodiment of the present application.

[0034] Figure 14 The vertical surface diagram of the windproof measure in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The present application will be further described below in conjunction with the drawings, so that those skilled in the art can implement the present application according to the description.

[0036] The following description is provided to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only examples, and other obvious modifications can be made by those skilled in the art. The basic principles defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0037] Those skilled in the art should understand that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0038] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0039] like Figures 1-14 As shown, a preferred embodiment of the present invention provides a prefabricated cover plate for areas with strong winds, including: a base 9, a bottom mold 14, an anchor 11, and a comb plate 10;

[0040] The bottom mold 14 is horizontally positioned in the middle of the base 9. The anchor 11 is a steel cylinder protruding from the upper surface of the base 9. The surface of the base 9 is recessed downward to form multiple pre-drilled holes 13, which surround the bottom mold 14. The comb plate 10 is positioned on the base 9. The head of the comb plate 10 is a long strip-shaped comb-like structure, and the tail is provided with multiple hollow box-like structures at intervals. The top of the anchor 11 can fit into the hollow box-like tail of the comb plate 10. The comb plate 10 can move along the anchor 11 towards the centerline of the base 9 or towards the outside of the base 9.

[0041] In the above technical solution, the width of the box-shaped structure of the comb plate 10 is consistent with the diameter of the anchor 11, which can cause the comb plate 10 to move laterally along the platform 9 to form two states: tightening and loosening. When the comb plate 10 moves towards the center line of the platform 9 to tighten, the comb teeth of the comb plate 10 are flush with the edge line of the bottom mold 14, which is used to control the edge line of the later reinforcement installation. When the comb plate 10 moves outward to loosen, the comb teeth of the comb plate 10 move to a certain distance outside the reserved hole 13, leaving space for the template installation and playing a certain template limiting role.

[0042] The pedestal 9 is cast in reinforced concrete. The thickness is calculated and determined according to the bearing capacity requirements of the precast components. The cross-sectional dimensions are controlled to be no less than 10cm on each side of the cover plate cross-section to ensure that the reserved holes 13, anchors 11, and comb plates 10 have sufficient construction space. The two ends of the pedestal 9 are marked with pigment according to the spacing of the reinforcing bars of the precast components.

[0043] The bottom mold 14 is made of steel formwork, and its cross-sectional dimensions are basically the same as those of the cover plate. During installation, the center of the bottom mold 14 coincides with the center of the platform 9. A release agent is applied to the surface of the bottom mold 14.

[0044] In another preferred embodiment, a hanger is also included, the hanger 16 is a steel structure hanger with a hook at the tail, the stirrup 6 is clamped in the tail hook of the hanger 16, the bottom of the lower end of the head of the hanger 16 is provided with a perforation for the top horizontal bar 5 to pass through, the bottom of the perforation is provided with a one-way valve 17, and the stirrup 6 is clamped along the comb teeth of the comb plate 10 and fixed with a binding wire. Among them, the perforation is multiple and arranged at a designed interval. The diameter of the perforation of the hanger 16 is slightly larger than the diameter of the top horizontal bar 5, which facilitates the clamping of the top horizontal bar 5.

[0045] In another preferred embodiment, a concrete cushion 7 is also included, a plurality of concrete cushions 7 are strung up with long binding wires 8 and arranged at equal intervals, and the concrete cushion 7 is arranged on the surface of the bottom mold 14.

[0046] In another preferred embodiment, a bottom horizontal bar 3 and a bottom reinforcing bar 4 are also included, and the bottom horizontal bar 3 and the bottom reinforcing bar 4 are passed into the stirrup 6.

[0047] A preferred embodiment of the present application also provides a construction method of a prefabricated cover plate in a strong wind area, comprising the following steps:

[0048] S1, the bottom mold 14 is transversely arranged in the middle of the pedestal 9, and the comb plate 10 is arranged on the pedestal 9,

[0049] S2, the concrete cushion 7 is laid on the surface of the bottom mold 14, and a plurality of concrete cushions are strung up with long binding wires 8, the stirrup 6 is clamped along the comb teeth of the comb plate 10 and fixed with a binding wire;

[0050] S3, the bottom horizontal bar 3 and the bottom reinforcing bar 4 are passed into the stirrup 6 and bound, and then the stirrup 6 is bound and stabilized with the intersection of the ground longitudinal and horizontal steel bars and the concrete cushion 7;

[0051] S4, the hanger 16 is hung on the top of the stirrup 6 and temporarily fixed, the top horizontal bar 5 is clamped into the perforation of the hanger 16 and temporarily fixed, and then the intersection of the top steel bars of the top horizontal bar 5 and the concrete cushion 7 are bound and stabilized;

[0052] S5, the concrete cushion 7 is installed on the side of the pedestal 9 and the mold is sealed, the comb plate 10 is moved outward transversely towards the pedestal 9 to loosen the binding of the side concrete cushion 7, and then the main beams of the formwork 18 are inserted into the reserved holes on both sides and the end of the concrete cushion for fixing the formwork, and the comb plate 10 plays a certain limiting role, after the installation and inspection of the formwork 18 are qualified, the building concrete is formed, and after the demolding and curing are qualified, the building concrete is formed, and after the inspection is qualified, the building concrete is transported to the site by the mobile lifting equipment using the designed lifting points for standby use.

[0053] S6, if the construction process encountered strong wind weather, the use of anchor 11 as a fastening point will be fixed wire rope 19, and will be fixed on the wire rope on the tarpaulin, the pedestal 9 protection.

[0054] Wherein, the anchor 11 buried depth needs to be determined according to the wind resistance capacity calculation, to ensure that it has enough wind resistance capacity.

[0055] According to the thickness of the customized template 18, the position of the reserved hole 13 and the moving distance of the comb plate 10 are determined.

[0056] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, it can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, therefore, the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A construction method of a fabricated cover plate in a strong wind area, characterized in that, It comprises the following steps: S1, the bottom die is transversely arranged in the middle of the pedestal, and the comb plate is arranged on the pedestal; S2, concrete pads are laid on the surface of the bottom die, a plurality of concrete pads are strung up by long wire, the stirrup is clamped along the comb teeth of the comb plate, and the wire is used for fixing; S3, the bottom layer horizontal reinforcement and the bottom layer reinforcing bar are inserted into the stirrup and bound, and the intersection of the bottom layer longitudinal and transverse steel bars of the stirrup and the concrete pad are bound and stabilized; S4, the suspension bracket is suspended on the top of the stirrup and temporarily fixed, the top layer horizontal reinforcement is clamped into the perforation of the suspension bracket and temporarily fixed, and then the intersection of the top layer steel bars of the top layer horizontal reinforcement and the concrete pad are bound and stabilized; S5, concrete pads are installed on the side of the pedestal, and the mold is sealed, the comb plate is moved outward transversely towards the pedestal to loosen the bound side concrete pads, and then the main beams of the formwork are inserted into the reserved holes on both sides and the end of the concrete pads for fixing the formwork, the formwork is installed and inspected, the building concrete is formed, and after the formwork is removed and maintained, it is transported to the site by mobile lifting equipment through the design lifting point for standby use after inspection; Wherein, the bottom die is transversely arranged in the middle of the pedestal, the anchor is a steel cylinder protruding from the upper surface of the pedestal, the surface of the pedestal is downwardly recessed to form a plurality of reserved holes, the reserved holes are arranged around the bottom die, the comb plate is arranged on the pedestal, the head of the comb plate is a long strip-shaped comb structure, and the tail is provided with a plurality of hollow box structures, the top of the anchor can be fitted into the hollow box-shaped tail of the comb plate, and the comb plate can move along the anchor towards the middle line of the pedestal or towards the outside of the pedestal; The suspension bracket is a steel structure bracket with a hook at the tail, the stirrup is clamped in the tail hook of the suspension bracket, the head of the suspension bracket is provided with a perforation at the bottom end to allow the top layer horizontal reinforcement to pass through, and the perforation is provided with a one-way valve, and the stirrup is clamped along the comb teeth of the comb plate and fixed by the wire.

2. The construction method of a multi-strong wind area assembled cover plate according to claim 1, characterized in that, It further comprises the following steps: S6, if strong wind weather is encountered during construction, the anchor is used as a fastening point to fix the steel wire rope, and the tarpaulin is fixed on the steel wire rope to protect the pedestal.

3. The construction method of multi-strong wind area assembled cover plate according to claim 1, characterized in that, The buried depth of the anchor needs to be determined according to the wind resistance calculation to ensure sufficient wind resistance.

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