Guardrail integrated prefabricated assembly type stand column foundation

Abstract

The utility model relates to a guardrail integrated prefabricated assembly type stand column foundation which mainly comprises a prefabricated concrete foundation, handrails, connecting rods, lifting lugs, steel base plates, bottom steel plates, steel plate anchoring parts, anchor bolts and connecting screw rods, wherein the steel base plates, the bottom steel plates, the steel plate anchoring parts, the anchor bolts and the connecting screw rods are fixed in the prefabricated concrete foundation. The bottom steel plate is arranged at the bottom of the prefabricated concrete foundation through the steel plate anchoring part and fixed to the bottom steel plate in a spot welding mode, the guardrail composed of the handrails and the connecting rods is arranged on the periphery of the prefabricated concrete foundation and fixed through the pre-buried connecting screws, and the lifting lugs, the steel base plate and the anchor bolts are fixed to the upper portion of the prefabricated concrete foundation. The concrete foundation is novel in structural design, the on-site construction period can be shortened by prefabricating the concrete foundation in advance, the overall quality is guaranteed, the protective performance of the structure in use can be improved by arranging the guardrails on the periphery, and meanwhile components such as the handrails are easy and convenient to assemble and disassemble and convenient to replace; and after on-site use, the prefabricated column foundation can be conveniently transported to the next construction position for turnover utilization through the upper lifting lugs.

Description

TECHNICAL FIELD

[0001] The utility model relates to a guardrail integrated prefabricated assembly type stand column foundation belongs to bridge engineering field, is applicable to bridge vertical support steel pipe stand column foundation construction. BACKGROUND

[0002] Steel pipe stand column support system is widely used in different types of bridge construction scenes, including viaduct, highway bridge, high-speed railway bridge in municipal construction and the like. Especially in complex geological conditions and high-quality bridge projects, steel pipe stand column support system becomes indispensable construction support structure because of its strong bearing capacity and stable structure. However, in the construction link of steel pipe stand column support system, conventional technology is to carry out steel pipe stand column concrete foundation pouring on site, or to prefabricate concrete foundation in advance and embed steel pipe stand column base on the upper side. However, on-site pouring of concrete foundation often faces problems such as difficult quality control and low construction efficiency, and conventional prefabricated concrete foundation is prone to damage during on-site construction, and the turnover efficiency is relatively low. Therefore, how to optimize prefabricated assembly type stand column foundation, improve stand column foundation construction efficiency and guarantee construction quality has important practical significance. SUMMARY

[0003] The utility model discloses a guardrail integrated prefabricated assembly type stand column foundation, which has novel structure design. The prefabricated concrete foundation can reduce the construction period on site and ensure the overall quality. The arrangement of guardrails around the foundation can increase the protection of the structure during use. The components such as railings are easy to install, disassemble and replace. After the on-site use is completed, the prefabricated assembly type stand column foundation can be easily transported to the next construction position through the upper lifting lugs for turnover utilization.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A guardrail integrated prefabricated assembly type stand column foundation comprises a prefabricated concrete foundation, a railing, a connecting rod, a lifting lug, a steel backing plate and a bottom steel plate. The railing and the connecting rod are connected to form a guardrail component installed around the prefabricated concrete foundation. The bottom of the railing is fixed to the bottom steel plate. The connecting rod is provided with a connecting hole. The prefabricated concrete foundation can be temporarily fixed by the connecting screw and the nut pre-buried around the prefabricated concrete foundation. The bottom steel plate is fixedly connected to the prefabricated concrete foundation through a steel plate anchoring member. The steel backing plate is anchored on the upper surface of the prefabricated concrete foundation through an anchor bolt. The lifting lug is fixed to the prefabricated concrete foundation.

[0006] Further, a plurality of steel plate anchoring members are welded to the upper part of the bottom steel plate to serve as a concrete pouring bottom formwork. After the concrete foundation is poured, the bottom steel plate is stably connected to the prefabricated concrete foundation by the steel plate anchoring members.

[0007] Further, the guardrail and the connecting rod are integrally formed into a safety guard around the prefabricated concrete foundation, and a connecting screw is further installed, which passes through the connecting hole on the connecting rod and is fixed to the prefabricated concrete foundation around by a nut after the main body of the prefabricated concrete foundation is completed, and the bottom of the guardrail is fixedly connected with the bottom steel plate through spot welding.

[0008] Further, a plurality of anchor bolts are arranged on the steel backing plate and are anchored to the prefabricated concrete foundation, and the steel backing plate is symmetrically arranged on the top of the prefabricated concrete foundation.

[0009] Further, the lifting lugs are symmetrically installed on the top of the prefabricated concrete foundation and are fixed to the internal reinforcement cage of the prefabricated concrete foundation through welding.

[0010] Further, the steel pipe column segments to be assembled are installed above the steel backing plate, and the steel pipe column segments are stably connected with the prefabricated concrete foundation through the anchor bolts.

[0011] Compared with the prior art, the utility model has the following characteristics and beneficial effects:

[0012] 1. The bottom steel plate is simple to process and convenient to install, can play a role of a formwork during pouring of the prefabricated concrete foundation, has high overall strength during support, effectively improves the stress performance of the column foundation, can also play a protection effect during turnover of the prefabricated concrete foundation, reduces damage to the bottom of the concrete foundation, and improves the construction quality of the support system.

[0013] 2. The guardrail can reduce collision damage of the prefabricated concrete foundation in the construction site, is simple to assemble and disassemble, can be replaced in time and effectively when the guardrail is damaged, effectively guarantees the structural safety of the prefabricated concrete foundation during support construction, and avoids additional resources and time loss caused by damage to the main structure of the foundation.

[0014] 3. The lifting lug structure is symmetrically installed on the top of the prefabricated concrete foundation, can be quickly hoisted and transported by means of the lifting lug during turnover of the prefabricated concrete foundation, and compared with transportation by means of a forklift and a steel wire rope, can effectively guarantee the safety of the main structure of the prefabricated concrete foundation on the basis of improving the turnover rate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a prefabricated and assembled column foundation structure with a guardrail integrated;

[0016] Fig. 2 is a schematic view of a guardrail structure;

[0017] Fig. 3 is a longitudinal sectional view of installation of the prefabricated and assembled column foundation structure with a guardrail integrated.

[0018] In the diagram: 1. Lifting lug; 2. Anchor bolt; 3. Precast concrete foundation; 4. Steel pad; 5. Railing; 6. Bottom steel plate; 7. Connecting bolt; 8. Nut; 9. Connecting rod; 10. Connecting hole; 11. Steel plate anchor; 12. Steel pipe column. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0020] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0021] 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.

[0022] Example 1

[0023] like Figs. 1-3 As shown, the structure of an integrated prefabricated assembled column foundation for a guardrail according to an embodiment of the present invention is displayed. The structure includes: a prefabricated concrete foundation 3, a guardrail 5, a connecting rod 9, a lifting lug 1, a steel pad 4, and a bottom steel plate 6. The guardrail 5 and the connecting rod 9 are connected to form guardrail components and installed around the prefabricated concrete foundation 3. The bottom of the guardrail 5 is spot-welded to the bottom steel plate 6. During installation, the connecting rod 9 is temporarily fixed to the prefabricated concrete foundation 3 by means of pre-embedded connecting bolts 7 and nuts 8 around the prefabricated concrete foundation 3 through pre-set connecting holes 10. The bottom steel plate 6 is fixedly connected to the prefabricated concrete foundation 3 through steel plate anchors 11. The steel pad 4 is anchored to the upper surface of the prefabricated concrete foundation 3 through anchor bolts 2. The lifting lug 1 is fixedly installed simultaneously during the fabrication of the prefabricated concrete foundation 3.

[0024] Specifically, the bottom steel plate 6 is welded with a plurality of steel plate anchors 11 on the upper portion, which also serves as a concrete pouring bottom formwork during pouring of the prefabricated concrete foundation 3, the drilling machine 2 is fastened with the base 6, and the two are synchronously moved, the railing 5 and the connecting rod 9 are convenient to install and disassemble, and can be quickly replaced when damaged, the steel pads 4 are symmetrically arranged on the top of the prefabricated concrete foundation 3, the lifting lugs 1 are symmetrically installed on the top of the prefabricated concrete foundation 3, and are welded and fixed with the internal reinforcement cage of the prefabricated concrete foundation 3, and the prefabricated concrete foundation 3 is stably connected with the steel pipe column 12 segments by the steel pads 4 and the anchors 2.

[0025] Example 2

[0026] The installation process of the guardrail integrated prefabricated assembly column foundation is as follows:

[0027] Before installation, the prefabricated concrete foundation 3 is manufactured in the factory according to the design size of the site support frame and is transported to the site, the bearing capacity of the foundation at the installation position is measured, and the steel pipe column 12 segments to be assembled are adjusted and assembled in advance to reduce the hoisting frequency during construction.

[0028] During installation, it is checked again whether the railing 5 and the connecting rod 9 have been fastened and installed, the prefabricated concrete foundation 3 is placed at the designed construction position by using hoisting equipment and the lifting lugs 1, then the adjusted and assembled steel pipe column 12 segments are installed above the steel pads 4, and the two are stably connected by the anchors 2.

[0029] After the construction of the current structure is completed, the support members are removed step by step from top to bottom, and the prefabricated concrete foundation 3 is hoisted and transported to the next construction position for cyclic installation and use by means of the lifting lugs 1.

[0030] The utility model is not limited to the above best embodiment, and anyone can derive other various forms of products under the inspiration of the utility model, but no matter any change in shape or structure, any technical scheme with the same or similar technology as the present application falls within the protection scope of the utility model.

Claims

1. A guardrail integrated precast fabricated post foundation, characterized in that, It includes: Prefabricated concrete foundation (3), railings (5), connecting rods (9), lugs (1), steel backing plate (4), bottom steel plate (6); the railings (5), connecting rod (9) connection component installation is composed of guardrail around the prefabricated concrete foundation (3), the bottom of the railings (5) is fixed on the bottom steel plate (6), the connecting rod (9) is provided with connecting hole (10), which can be temporarily fixed with the prefabricated concrete foundation (3) by means of connecting screw rod (7) and nut (8) embedded around the prefabricated concrete foundation (3); the bottom steel plate (6) is fixedly connected with the prefabricated concrete foundation (3) through the steel plate anchor (11); the steel backing plate (4) is anchored on the upper surface of the prefabricated concrete foundation (3) through the anchor bolt (2); the lug (1) is fixed on the prefabricated concrete foundation (3).

2. A precast, preassembled post foundation for guardrail integrated systems according to claim 1, wherein, The upper part of the bottom steel plate (6) is welded with a plurality of steel plate anchors (11), which is used as a concrete pouring bottom formwork, and the bottom steel plate (6) is stably connected with the prefabricated concrete foundation (3) by means of the steel plate anchor (11) after the concrete foundation (3) is poured.

3. A precast, preassembled post foundation for guardrail integrated systems according to claim 1, wherein, The railings (5) and connecting rods (9) are integrally formed into a safety guardrail around the prefabricated concrete foundation (3), and a connecting screw rod (7) is also installed, which passes through the connecting hole (10) on the connecting rod (9) and is fixed to the prefabricated concrete foundation (3) around by means of the nut (8) after the main body of the prefabricated concrete foundation (3) is completed, and the bottom of the railings (5) is fixedly connected with the bottom steel plate (6) by spot welding.

4. The integral guardrail post foundation of claim 1, wherein, The steel backing plate (4) is provided with a plurality of anchor bolts (2) for anchoring connection with the prefabricated concrete foundation (3), and the steel backing plate (4) is symmetrically arranged on the top of the prefabricated concrete foundation (3).

5. The integral guardrail post foundation of claim 1, wherein, The lug (1) is symmetrically installed on the top of the prefabricated concrete foundation (3) and is fixedly connected with the internal reinforcement cage of the prefabricated concrete foundation (3) by welding.

6. The integral guardrail post foundation according to any one of claims 1-5, wherein, The steel pipe column (12) segment to be assembled is installed above the steel backing plate (4), and the steel pipe column (12) segment is stably connected with the prefabricated concrete foundation (3) by means of the anchor bolt (2).

Images