CN-121992716-A - Bridge guardrail anchoring structure and anchoring construction method

CN121992716ACN 121992716 ACN121992716 ACN 121992716ACN-121992716-A

Abstract

The invention relates to a bridge guardrail anchoring structure and an anchoring construction method, which belong to the technical field of road and bridge engineering and comprise a top plate, a side plate, a plurality of top bolts and a plurality of side bolts, wherein the top plate and the side plate are integrally formed; the bottom surface of the top plate is arranged on the top surface of the rim and provided with a plurality of top anchor holes, the side plates are contacted with the rim side and provided with a plurality of side anchor holes, the bottom ends of the guardrail posts are fixed at the top end of the top plate, a plurality of top bolts respectively penetrate through the plurality of top anchor holes, and a plurality of side bolts respectively penetrate through the plurality of side anchor holes. According to the invention, the integrally formed top plate and the side plate which are vertically distributed are respectively arranged at the top end and one side of the rim, then a plurality of top bolts respectively penetrate through a plurality of top anchor holes to be in threaded connection with the corresponding top screw grooves, a plurality of side bolts respectively penetrate through a plurality of side anchor holes to be in threaded connection with the corresponding side screw grooves, and the guardrail can be firmly fixed on the rim on the premise of not expanding the bridge deck structure size and not changing the original rim structure, so that the stability and reliability of guardrail fixation are improved.

Inventors

ZHONG LIANDE
LIU HANLEI
BIAN XIAO
LI XIAOFENG
LIU FAN
ZHANG KAI
JI ZEZHONG
YU XINYAN

Assignees

北京中交华安科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260211

Claims (8)

1. The bridge guardrail anchoring structure is used for fixing guardrail posts (6) on a curb (5) of a bridge and is characterized by comprising the following components: the side plate (2) is vertically arranged with the side plate (2), the side plate (2) is positioned below the side plate (1), a plurality of top screw grooves are formed in the top end of the rim (5) and a plurality of side screw grooves are formed in one side of the side plate, the bottom surface of the top plate (1) is arranged on the top surface of the rim (5) and is provided with a plurality of top anchor holes (11) which are respectively opposite to the plurality of top screw grooves, one side of the side plate (2) is contacted with one side of the rim (5) and is provided with a plurality of side anchor holes (21) which are respectively opposite to the plurality of side screw grooves, and the bottom end of the guard column (6) is fixed on the top surface of the top plate (1); A plurality of top bolts (3) and a plurality of side bolts (4), wherein the top bolts (3) respectively penetrate through a plurality of top anchor holes (11) to be connected in the corresponding top screw grooves in a threaded manner; the side bolts (4) respectively penetrate through the side anchor holes (21) to be connected in the corresponding side screw grooves in a threaded mode.
2. The bridge guardrail anchoring structure according to claim 1, further comprising a plurality of top rib plates (7), wherein a plurality of top rib plates (7) are arranged outside the guardrail posts (6) in a spacing ring manner, and adjacent two sides of the top rib plates (7) are respectively fixed on the outer sides of the guardrail posts (6) and the top surface of the top plate (1).
3. The bridge guardrail anchoring structure according to claim 1, further comprising a plurality of side ribs (8), wherein a plurality of the side ribs (8) are spaced apart and adjacent sides thereof are respectively fixed to the bottom surface of the top plate (1) and the other side of the side plate (2).
4. The bridge railing anchor structure according to claim 1, further comprising a plurality of top adhesive layers, wherein the plurality of top adhesive layers are filled in gaps between the plurality of top bolts (3) and the plurality of top screw grooves, respectively.
5. The bridge railing anchor structure according to claim 1, further comprising a plurality of side adhesive layers, wherein the plurality of side adhesive layers are respectively filled in gaps between the plurality of side bolts (4) and the plurality of side screw grooves.
6. A bridge railing anchoring structure according to claim 1, characterised in that a plurality of said roof bolts (3) are each selected from chemical bolts.
7. A bridge railing anchor structure according to claim 1, characterised in that a plurality of said side bolts (4) are expansion bolts.
8. A bridge railing anchoring construction method, which is characterized by comprising the bridge railing anchoring structure as set forth in any one of claims 1-7, and specifically comprising the following steps: s1, cleaning the top surface and the side surface of a rim (5), and drilling a plurality of top screw grooves and a plurality of side screw grooves on the top end and one side of the rim (5) respectively; S2, firstly, enabling the top plate (1) and the side plate (2) to be respectively contacted with the top end and one side of the rim (5), and then enabling the plurality of top anchor holes (11) to be aligned with the plurality of top screw grooves and the plurality of side anchor holes (21) to be aligned with the plurality of side screw grooves; S3, respectively threading a plurality of top bolts (3) through a plurality of top anchor holes (11) to be connected in corresponding top screw grooves, and respectively threading a plurality of side bolts (4) through a plurality of side anchor holes (21) to be connected in corresponding side screw grooves; and S4, the bottom end of the guardrail post (6) is fixed on the top surface of the top plate (1).

Description

Bridge guardrail anchoring structure and anchoring construction method Technical Field The invention relates to the technical field of road and bridge engineering, in particular to a bridge guardrail anchoring structure and an anchoring construction method. Background Along with the higher requirement of people on the protection level of the central separation zone guardrail of the bridge, the corrugated beam guardrail has widely replaced the concrete guardrail because of the advantages of strong energy absorption, light weight and simple construction, and becomes the mainstream scheme of bridge guardrail transformation. However, in the process of upgrading and reforming the existing bridge, the technical problems that the traditional guardrail flange base structure cannot be effectively arranged when the transverse width of a ① central rim is insufficient, part of the bridge with long service life is relatively narrow in transverse width, four chemical anchors are required to be distributed on the rim by adopting the traditional guardrail base, the anchor holes facing away from the driving direction are difficult to be arranged or cannot obtain reliable anchoring force due to insufficient space, so that the requirement of column stability is caused, when the thickness of the ② central rim is insufficient, the traditional chemical anchor distribution scheme has the risk of damaging the bridge deck structure, and part of the existing bridge central rim has limited concrete thickness, cannot meet the requirement of standard anchor anchoring depth, and if forced construction is performed, the rim is likely to be drilled or the flange is likely to be damaged, structural safety is affected, and if the length of the anchors is reduced, sufficient anchoring force cannot be provided, and particularly when impact load or pulling force is encountered, instability easily occurs. Therefore, how to design a bridge guardrail anchoring structure which is suitable for the limitation of the size of a central rim and has high stability and reliability and a construction method thereof are problems to be solved by the technicians in the field. Disclosure of Invention The invention provides a bridge guardrail anchoring structure and an anchoring construction method, which solve the technical problems that the size of the existing bridge curb is insufficient and the stability of the bridge guardrail is affected. The technical scheme includes that the bridge guardrail anchoring structure is used for fixing guardrail posts on a curb of a bridge, and comprises a top plate, side plates, a plurality of top bolts and a plurality of side bolts, wherein the top plate and the side plates are integrally formed and vertically arranged, the side plates are located below the top plate, a plurality of top screw grooves are formed in the top end of the curb, a plurality of side screw grooves are formed in one side of the top plate, a plurality of top anchor holes which are respectively arranged opposite to the top screw grooves are formed in the bottom surface of the top plate and are arranged on the top surface of the curb, one side of the side plates is contacted with one side of the curb, a plurality of side anchor holes which are respectively arranged opposite to the side screw grooves are formed in the top end of the guardrail posts, the top bolts are respectively connected in the corresponding top screw grooves through the top anchor holes in a threaded manner, and the side bolts are respectively connected in the corresponding side screw grooves through the side anchor holes in a threaded manner. The beneficial effects of the invention are as follows: 1. The bridge guardrail anchoring structure is designed completely, an integrally formed and vertically distributed top plate and side plate are respectively arranged at the top end and one side of the curb, a plurality of top bolts respectively penetrate through a plurality of top anchor holes to be in threaded connection with corresponding top screw grooves, a plurality of side bolts respectively penetrate through a plurality of side anchor holes to be in threaded connection with corresponding side screw grooves, the vertically distributed top bolts and side bolts can be utilized to firmly fix the guardrail on the curb on the premise of not expanding the structural size of the bridge deck and not changing the original curb structure, the problem that the guardrail cannot be stably fixed when the width of the curb is narrow and the thickness is insufficient is solved, and the fixation stability and reliability of the guardrail are improved; 2. Because a plurality of top bolts are arranged vertically with a plurality of side bolts and the guardrail is fixed on the curb at the same time, the depths of a plurality of top screw grooves and a plurality of side screw grooves can be reduced, and the curb is prevented from being damaged due to too deep drilling. On the basis of the technical sche