Prefabricated bridge anti-collision guardrail

Abstract

The utility model discloses a prefabricated bridge anti-collision guardrail. The bridge anti-collision guardrail is an anti-collision guardrail system which is stable in quality, convenient to install and replace and complete in function and is mainly formed by splicing prefabricated anti-collision guardrail sections through longitudinal connecting piece socket teeth and socket grooves, vertical connecting piece high-strength bolts, positioning embedded piece steel sleeves, buffering rubber cushion blocks and waterproof sealing layers. The steel sleeves are fixed through the bolt sleeve fixing supports, and precise positioning of the prefabricated anti-collision guardrail segments is achieved. The prefabricated anti-collision guardrail sections can be more convenient to maintain and replace through the connection design that the socket teeth and the socket grooves are vertically arranged on the prefabricated anti-collision guardrail sections in a full-length mode and the separated design of the high-strength bolts and the steel sleeves; the deformation energy dissipation capacity of the structure is improved through the buffer rubber cushion blocks arranged at the bottoms of the high-strength bolts; and the waterproof sealing layer is arranged at the bottom of the prefabricated anti-collision guardrail section, so that the waterproof effect and the structural durability of the connecting part are improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge traffic safety technology. Background Technology

[0002] In recent years, due to the rapid development of transportation, bridge construction has been booming across the country. However, the design and construction methods of crash barriers, a crucial component of bridge safety facilities, have remained largely unchanged, and their drawbacks are becoming increasingly apparent. Currently, most bridge crash barriers are constructed using cast-in-place methods, resulting in extensive on-site wet work, a large workload, low mechanization, and low production efficiency. The quality of cast-in-place barriers is difficult to guarantee; honeycomb and pitted surfaces not only affect aesthetics but also lead to significant problems such as steel reinforcement corrosion from rainwater and de-icing agents. Cast-in-place construction frequently impacts construction schedules and the safety of roads beneath bridges, especially in urban areas and overpass projects. Replacing damaged cast-in-place bridge crash barriers is not only troublesome and involves a large amount of work but also has a long construction period, significantly disrupting road traffic. Therefore, a more scientific and rational approach to the construction of bridge crash barriers is urgently needed. Utility Model Content

[0003] Based on research into the shortcomings of cast-in-place bridge crash barriers, a precast bridge crash barrier with stable quality, convenient installation, easy replacement, and complete functions is proposed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Precast crash barriers suitable for bridge sections are mainly composed of longitudinal connectors (socket teeth and slots), vertical connectors (high-strength bolts), positioning embedded steel sleeves, buffer rubber pads, and a waterproof sealing layer. These precast crash barrier segments are spliced ​​together to form a stable, easy-to-install, easy-to-replace, and fully functional crash barrier system.

[0006] Furthermore, the longitudinal connectors are socket teeth and socket slots respectively set at both ends of a single prefabricated guardrail segment, and both are set vertically along the entire length.

[0007] Furthermore, the vertical connectors consist of two rows of pre-embedded high-strength bolts arranged vertically within the prefabricated crash barrier segments and a bottom buffer rubber pad.

[0008] Furthermore, the embedded part is a steel sleeve, which is embedded in the bridge cantilever. The embedded part is accurately positioned by the bolt sleeve fixing bracket.

[0009] Furthermore, a waterproof sealing layer is installed at the bottom of the prefabricated crash barrier segments, and the waterproof sealing layer is made of flexible waterproof material.

[0010] Furthermore, the high-strength bolts do not adhere to the steel sleeve.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This type of prefabricated bridge crash barrier is manufactured in the factory and then transported to the site. The components do not need to be manufactured on the construction site, the quality of the structure itself is not affected by the on-site construction environment, the quality of the product is uniform and controllable, and the construction period is greatly shortened.

[0013] 2. This type of precast bridge crash barrier is equipped with a socket tooth and socket slot connection, which not only strengthens the longitudinal connection and facilitates on-site construction, but also provides great convenience for future maintenance and replacement of precast crash barrier segments.

[0014] 3. This type of precast bridge crash barrier uses bolt sleeve fixing brackets to fix steel sleeves, which facilitates accurate positioning and reduces errors.

[0015] 4. This type of precast bridge crash barrier has buffer rubber pads on the top of the high-strength bolt nuts, which increases the structural deformation coordination ability and energy dissipation capacity.

[0016] 5. The steel sleeves of this type of precast bridge crash barrier extend above the bridge cantilever, providing greater shear resistance to the precast crash barrier segments.

[0017] 6. This type of precast bridge crash barrier features a waterproof sealing layer at the bottom of each segment to prevent water seepage from corroding the structure and connectors. High-strength bolts are all located at the bottom of the beams to minimize contact with water. These measures significantly increase the structure's durability. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the prefabricated bridge crash barrier of this utility model.

[0019] Figure 2 This is a longitudinal elevation view of the prefabricated bridge crash barrier of this utility model.

[0020] Figure 3 This is a plan view of the prefabricated bridge crash barrier of this utility model.

[0021] In the diagram: 1-socket tooth, 2-socket slot, 3-high-strength bolt, 4-buffer rubber pad, 5-steel sleeve, 6-bolt sleeve fixing bracket, 7-waterproof sealing layer, 8-prefabricated anti-collision guardrail segment, 9-bridge cantilever, 10-bridge deck surface layer. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] The structures, proportions, and sizes illustrated in the accompanying drawings are solely for illustrative purposes. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "vertical" and "longitudinal" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0024] As attached Figures 1-2 As shown, the steel sleeve 5 is fixed by the bolt sleeve fixing bracket 6 through spot welding, and is pre-embedded into the bridge cantilever 9 according to the design requirements during the construction of the bridge cantilever 9.

[0025] As attached Figures 1-2 As shown, a waterproof sealant layer 7 is applied to the joint surface at the bottom of the prefabricated crash barrier segment 8.

[0026] As attached Figures 1-2 As shown, the first prefabricated crash barrier segment 8 is installed, and the high-strength bolts 3 of the prefabricated crash barrier segment 8 pass through the steel sleeve 5.

[0027] As attached Figures 1-2 As shown, buffer rubber pads 4 are installed on the high-strength bolts 3 at the bottom of the bridge cantilever 9, and then the nuts of the two rows of high-strength bolts 3 are tightened. No adhesive is placed inside the steel sleeve 5 during connection (for easy replacement). The vertical installation of a single prefabricated crash barrier segment 8 is completed.

[0028] As attached Figures 1-3 As shown, the prefabricated crash barrier segments 8 are continued to be installed along the longitudinal direction of the crash barrier using the socket teeth 1 and socket slots 2 until the installation is completed.

[0029] The above embodiments are merely advantages, features, and basic principles of this utility model. It should be understood that this utility model is not limited to the above embodiments. Without departing from the concept of this utility model, there may be new changes and improvements, all of which fall within the protection scope of this utility model.

[0030] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A prefabricated bridge crash barrier, characterized in that: A crash barrier system is constructed by splicing prefabricated crash barrier segments together, consisting of longitudinal connecting teeth and slots, vertical connecting high-strength bolts and buffer rubber pads, positioning embedded steel sleeves, and a waterproof sealing layer. The longitudinal connecting teeth and slots of the prefabricated bridge crash barrier are all vertically continuous. The vertical connecting parts are pre-embedded high-strength bolts arranged within the prefabricated crash barrier segments and buffer rubber pads at their bottoms. The positioning embedded steel sleeves are steel sleeves pre-embedded within the bridge cantilever and positioned by bolt sleeve fixing brackets. The waterproof sealing layer is a flexible waterproof material. The high-strength bolts are not bonded to the steel sleeves.

Images