CN110700094A - Viaduct wall-mounted guardrail structure and construction method thereof - Google Patents
Viaduct wall-mounted guardrail structure and construction method thereof Download PDFInfo
- Publication number
- CN110700094A CN110700094A CN201911100730.8A CN201911100730A CN110700094A CN 110700094 A CN110700094 A CN 110700094A CN 201911100730 A CN201911100730 A CN 201911100730A CN 110700094 A CN110700094 A CN 110700094A
- Authority
- CN
- China
- Prior art keywords
- guardrail
- prefabricated
- block
- cast
- place
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
A viaduct wall-hanging guardrail structure and a construction method thereof comprise a prefabricated guardrail part and a cast-in-place guardrail part; the prefabricated guardrail part is formed by splicing a group of prefabricated guardrail blocks; the lower part of the inner side surface of the prefabricated guardrail block is provided with a hanging beam; the prefabricated guardrail block is hung on the side edge of the box girder through a hanging girder; a first connecting rib is arranged in the prefabricated guardrail block; the inner side edge of the first connecting rib exceeds the inner side surface of the prefabricated guardrail block and extends into the position of the cast-in-place guardrail part; the cast-in-place guardrail part is poured on the inner side of the prefabricated guardrail part along the whole length of the edge of the box girder; second connecting ribs are arranged at the top of the box girder and the positions corresponding to the cast-in-place guardrail parts; the top edge of the second connecting rib exceeds the top surface of the box girder and extends into the cast-in-place guardrail part. The invention solves the technical problem that the traditional cast-in-place concrete structure is not suitable for the guardrail construction of the project due to the guardrail; the technical problems that the weight of the integral prefabricated guardrail is heavy and the quality of the installation construction line type cannot be guaranteed are solved.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to an overhead bridge wall-mounted guardrail structure and a construction method thereof.
Background
A certain project adopts segment box girder assembling erection construction, and guardrails on two sides of the bridge are all in a wall-hanging type. At present, the common guardrails have an integral cast-in-place type and an integral prefabricated type; the problem that the steel form usage is big, the efficiency of construction is low exists in whole cast-in-place type, moreover because of the guardrail both sides all need prop up establishes the steel form, can not be adapted to this project's guardrail construction. The integral prefabricated guardrail construction single guardrail has the problems that the weight is heavy, and the quality of the installation construction line type cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a viaduct wall-mounted guardrail structure and a construction method thereof, and aims to solve the technical problem that the traditional cast-in-place concrete structure is not suitable for guardrail construction of the project due to the fact that steel templates need to be erected on two sides of a guardrail; the problems that the weight of the integral prefabricated guardrail is heavy and the quality of the installation construction line type cannot be guaranteed are solved.
In order to achieve the purpose, the invention adopts the following technical scheme.
A viaduct wall-mounted guardrail structure is arranged on two sides of a box girder; comprises a prefabricated guardrail part and a cast-in-situ guardrail part; the prefabricated guardrail part is formed by splicing a group of prefabricated guardrail blocks, and each prefabricated guardrail block is a prefabricated reinforced concrete rectangular block; a hanging beam is arranged at the lower part of the inner side surface of the prefabricated guardrail block along the longitudinal length; the prefabricated guardrail block is hung on the side edge of the box girder through a hanging girder; a first connecting rib is arranged in the prefabricated guardrail block and at a position corresponding to the hanging beam; the first connecting ribs are provided with a group and are arranged at intervals along the longitudinal direction; each first connecting rib is annular, the outer side edge of each first connecting rib is embedded in the prefabricated guardrail block, and the inner side edge of each first connecting rib exceeds the inner side surface of the prefabricated guardrail block and extends into the position of the cast-in-place guardrail part; the cast-in-place guardrail part is poured on the inner side of the prefabricated guardrail part along the full length of the edge of the box girder, and the top of the cast-in-place guardrail part is flush with the top of the prefabricated guardrail part; second connecting ribs are arranged at the top of the box girder and the positions corresponding to the cast-in-place guardrail parts; the second connecting rib is annular, the bottom edge of the second connecting rib is embedded in the box girder, and the top edge of the second connecting rib exceeds the top surface of the box girder and extends into the cast-in-situ guardrail part.
Preferably, the height of the prefabricated guardrail part is 1.5-2 m, the width of the prefabricated guardrail part is 0.8-1.2 m, and the thickness of the prefabricated guardrail part is 0.05-0.1 m; the distance between the hanging beam and the bottom edge of the prefabricated guardrail part is 0.4-0.6 m, the height of the hanging beam is not less than 0.2m, and the width of the hanging beam is not less than 0.1 m.
Preferably, the distance between the inner side surface of the cast-in-place guardrail part and the inner side surface of the prefabricated guardrail part is not less than 0.2 m.
Preferably, when the top of the prefabricated guardrail block is provided with a street lamp; a lamp post platform connected with a lamp post is arranged on the outer side of the prefabricated guardrail block; the vertical section of the lamp post platform is triangular, and the lamp post platform and the prefabricated guardrail block are integrally formed; the height of the lamp post platform is not less than 1 m; the thickness of the lamp post platform is gradually reduced from top to bottom, and the thickness of the top surface of the lamp post platform is 0.3-0.5 m; a connecting plate is embedded in the top of the lamp post platform; the lamp post is fixedly connected to the connecting plate; a first line groove is pre-embedded in the prefabricated guardrail block; the upper end of the first wire groove is connected to the bottom of the lamp post.
Preferably, when the street lamp is the first street lamp, the lower end of the first trunking extends to the bottom of the box girder, extends to the outside of the box girder from the lower part of the box girder and is connected with the distribution box.
Preferably, when the street lamp is a non-first street lamp, the lower end of the first wire groove extends to the position which is 0.3-0.4 m away from the top surface of the box girder and on the inner side surface of the prefabricated guardrail block; a second trunking is pre-buried in the cast-in-place guardrail part along the longitudinal through length at the position corresponding to the height of the lower port of the first trunking; the first wire groove is communicated with the second wire groove; an access hole is formed in the position, corresponding to the lower port of the first linear groove, on the inner side surface of the cast-in-place guardrail part; the width of the access hole is 0.25-0.35 m, and the length of the access hole is 0.25-0.35 m; the upper cover of the access hole is provided with a cover plate. Preferably, a construction joint is reserved between the longitudinally adjacent prefabricated guardrail blocks; the width of the construction joint is 0.01 m-0.05 m; and a foam plate is filled in the construction joint.
A construction method of a viaduct wall-mounted guardrail structure comprises the following steps.
The method comprises the following steps of firstly, dividing a guardrail structure into an inner part and an outer part, wherein the outer part is a prefabricated guardrail part, and the inner part is a cast-in-place guardrail part.
And step two, manufacturing a prefabricated guardrail block, and embedding a first connecting rib on the inner side surface of the prefabricated guardrail block and at a position corresponding to the hanging beam.
And step three, binding a steel reinforcement framework of the cast-in-place guardrail part at the top of the box girder and the position corresponding to the cast-in-place guardrail part, and embedding a second connecting rib in advance.
Step four, installing the prefabricated guardrail block: and hoisting a group of prefabricated guardrail blocks in place by using a crane.
And fifthly, adjusting the line type after the prefabricated guardrail block is hoisted in place, and welding and fixing the first connecting rib and the steel reinforcement framework of the cast-in-place guardrail part.
And sixthly, installing an inner side mold and an end mold of the cast-in-place guardrail part, and fixing the template by using a support frame.
And seventhly, pouring concrete of the cast-in-place guardrail part and maintaining, so that construction is finished.
Preferably, in the second step, when the prefabricated guardrail block is the prefabricated guardrail block arranged at the bottom of the first street lamp, a lamp post platform connected with a lamp post is arranged on the outer side of the prefabricated guardrail block; a first line groove is pre-embedded in the prefabricated guardrail block; the upper end of the first wire groove is located at the top of the prefabricated guardrail block, and the lower end of the first wire groove extends to the lower portion of the inner side face of the prefabricated guardrail block and is located at a position below the hanging beam.
Preferably, in the second step, when the prefabricated guardrail block is a prefabricated guardrail block arranged at the bottom of a street lamp other than the first street lamp, a lamp post platform connected with a lamp post is arranged on the outer side of the prefabricated guardrail block; a first line groove is pre-embedded in the prefabricated guardrail block; the upper end of the first wire groove is positioned at the top of the prefabricated guardrail block, and the lower end of the first wire groove extends to the middle part of the inner side surface of the prefabricated guardrail block and is positioned above the hanging beam;
step seven, when the concrete of the cast-in-place guardrail part is poured, a second linear groove is pre-embedded in the cast-in-place guardrail part along the longitudinal direction at the position corresponding to the height position of the lower port of the first linear groove; the first wire groove is communicated with the second wire groove; and a maintenance opening is reserved at the position corresponding to the lower port of the first linear groove on the inner side surface of the cast-in-situ guardrail part.
Compared with the prior art, the invention has the following characteristics and beneficial effects.
1. In the viaduct wall-mounted guardrail structure, one part is a prefabricated guardrail part, and the other part is a cast-in-place guardrail part; and the prefabricated guardrail part is hung outside the box girder in a hanging mode, the design mode can reduce the occupation of the whole guardrail on the bridge floor space, the concrete consumption can be reduced under the condition that the net width of the bridge floor is the same, and meanwhile, the outer side of the prefabricated guardrail part adopts an arc-shaped structure, so that the integral attractiveness of the bridge can be improved.
2. The construction method can reduce the construction amount of the steel template, when the prefabricated guardrail part is installed and then the cast-in-place guardrail part is poured, the cast-in-place guardrail part only needs to be poured by a single-side formwork, the linear quality of the guardrail is ensured, the construction efficiency of the guardrail can be improved, the binding amount of the steel bars on site can be reduced, and the management and control of the steel bars are facilitated.
3. The invention is provided with a first connecting rib at the position corresponding to a hanging beam in a prefabricated guardrail block, the outer side edge of the first connecting rib is embedded in the prefabricated guardrail block, the inner side edge of the first connecting rib exceeds the inner side surface of the prefabricated guardrail block and extends into the position of a cast-in-place guardrail part, and the first connecting rib is poured in the cast-in-place guardrail part; meanwhile, second connecting ribs are arranged at the top of the box girder and the position corresponding to the cast-in-place guardrail part; the bottom edge of the second connecting rib is embedded in the box girder, and the top edge of the second connecting rib exceeds the top surface of the box girder and extends into the cast-in-place guardrail part; the integrity of the prefabricated guardrail part and the cast-in-place guardrail part and the firmness of the connection of the viaduct wall-mounted guardrail structure and the box girder are enhanced by the arrangement form of the steel bars.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of a vertical section structure of the overpass wall-mounted guardrail structure of the invention.
Fig. 2 is a schematic view of a vertical section structure in which a lamppost platform is arranged on the outer side of the viaduct wall-mounted guardrail structure, and the lower end of the first wire duct is located below the hanging beam.
Fig. 3 is a schematic view of a vertical section structure in which a lamppost platform is arranged on the outer side of the viaduct wall-mounted guardrail structure, and the lower end of the first wire duct is located above the hanging beam.
Figure 4 is a layout of rebar in a prefabricated guard rail section and a cast-in-place guard rail section of the present invention.
Fig. 5 is a layout diagram of reinforcing steel bars in a prefabricated guardrail part and a cast-in-place guardrail part when a lamppost platform is arranged on the outer side of the viaduct wall-mounted guardrail structure.
Fig. 6 is a schematic plan view of the overpass wall-hanging guardrail structure of the invention.
Fig. 7 is a schematic plan view of the overhead wall-mounted guardrail structure of the viaduct provided with a lamppost platform on the outer side.
Reference numerals: the construction method comprises the following steps of 1-box girder, 2-prefabricated guardrail part, 2.1-prefabricated guardrail block, 3-cast-in-place guardrail part, 3.1-upper section, 3.2-transition section, 3.3-lower section, 4-hanging beam, 5-first connecting rib, 6-second connecting rib, 7-lamp post, 8-lamp post platform, 9-connecting plate, 10-first wire groove, 11-second wire groove, 12-overhaul port, 13-cover plate and 14-construction joint.
Detailed Description
As shown in fig. 1-7, the viaduct wall-hanging guardrail structure is arranged on two sides of a box girder 1; comprises a prefabricated guardrail part 2 and a cast-in-place guardrail part 3; the prefabricated guardrail part 2 is formed by splicing a group of prefabricated guardrail blocks 2.1, and each prefabricated guardrail block 2.1 is a prefabricated reinforced concrete rectangular block; a hanging beam 4 is arranged at the lower part of the inner side surface of the prefabricated guardrail block 2.1 along the longitudinal length; the prefabricated guardrail block 2.1 is hung on the side edge of the box girder 1 through a hanging beam 4; a first connecting rib 5 is arranged in the prefabricated guardrail block 2.1 and at the position corresponding to the hanging beam 4; the first connecting ribs 5 are provided with a group and are arranged at intervals along the longitudinal direction; each first connecting rib 5 is annular, the outer side edge of each first connecting rib 5 is embedded in the prefabricated guardrail block 2.1, and the inner side edge of each first connecting rib 5 exceeds the inner side surface of the prefabricated guardrail block 2.1 and extends into the position of the cast-in-place guardrail part 3; the cast-in-place guardrail part 3 is poured on the inner side of the prefabricated guardrail part 2 along the full length of the edge of the box girder 1, and the top of the cast-in-place guardrail part 3 is flush with the top of the prefabricated guardrail part 2; a second connecting rib 6 is arranged at the top of the box girder 1 and at a position corresponding to the cast-in-place guardrail part 3; the second connecting rib 6 is annular, the bottom edge of the second connecting rib 6 is embedded in the box girder 1, and the top edge of the second connecting rib 6 exceeds the top surface of the box girder 1 and extends into the cast-in-situ guardrail part 3.
In the embodiment, the height of the prefabricated guardrail part 2 is 1.5-2 m, the width of the prefabricated guardrail part 2 is 0.8-1.2 m, and the thickness of the prefabricated guardrail part 2 is 0.05-0.1 m; the distance between the hanging beam 4 and the bottom edge of the prefabricated guardrail part 2 is 0.4-0.6 m, the height of the hanging beam 4 is not less than 0.2m, and the width of the hanging beam 4 is not less than 0.1 m.
In this embodiment, the outer side surface of the prefabricated guard rail part 2 is an arc-shaped surface protruding outwards.
In this embodiment, the distance between the inner side surface of the cast-in-place guardrail portion 3 and the inner side surface of the prefabricated guardrail portion 2 is not less than 0.2 m.
In this embodiment, when the top of the prefabricated guardrail block 2.1 is provided with a street lamp; a lamp post platform 8 connected with a lamp post 7 is arranged on the outer side of the prefabricated guardrail block 2.1; the vertical section of the lamp post platform 8 is triangular, and the lamp post platform 8 and the prefabricated guardrail block 2.1 are integrally formed; the height of the lamp post platform 8 is not less than 1 m; the thickness of the lamp post platform 8 is gradually reduced from top to bottom, and the thickness of the top surface of the lamp post platform is 0.3-0.5 m; a connecting plate 9 is embedded in the top of the lamp post platform 8; the lamp post 7 is fixedly connected to the connecting plate 9; a first line groove 10 is embedded in the prefabricated guardrail block 2.1; the upper end of the first wire casing 10 is connected to the bottom of the lamp post 7.
In this embodiment, when the street lamp is the first street lamp, the lower end of the first trunking 10 extends to the bottom of the box girder 1, extends to the outside of the box girder 1 from the lower part of the box girder 1, and is connected with the distribution box; a transformer is also arranged between the first wire slot 10 and the distribution box, and one distribution box generally controls 30 street lamps;
in this embodiment, when the street lamp is a non-first street lamp, the lower end of the first trunking 10 extends to the position 0.3-0.4 m away from the top surface of the box girder 1 and the inner side surface of the prefabricated guardrail block 2.1; a second linear groove 11 is pre-embedded in the cast-in-place guardrail part 3 along the longitudinal direction at the position corresponding to the height of the lower port of the first linear groove 10; the first wire groove 10 is communicated with the second wire groove 11; an access hole 12 is formed in the inner side surface of the cast-in-place guardrail part 3 at a position corresponding to the lower port of the first line groove 10; the access hole 12 is arranged at the lower part of each street lamp; the width of the access hole 12 is 0.25-0.35 m, and the length of the access hole 12 is 0.25-0.35 m; a cover plate 13 is covered on the access hole 12.
In this embodiment, the first street lamp is a street lamp disposed at an end of one end of the bridge, and the non-first street lamps are street lamps disposed in a row behind the first street lamp. In the embodiment, a construction joint 14 is reserved between the prefabricated guardrail blocks 2.1 which are adjacent in the longitudinal direction; the width of the construction joint 14 is 0.01 m-0.05 m; the construction joints 14 are filled with foam boards.
In this embodiment, the prefabricated guardrail part 2 and the cast-in-place guardrail part 3 are respectively provided with a steel reinforcement framework, and the steel reinforcement framework in the prefabricated guardrail part 2 is in lap joint with the steel reinforcement framework in the cast-in-place guardrail part 3.
In this embodiment, the bottom of the connecting plate 9 is provided with an anchor bar, and the anchor bar is anchored in the lamppost platform 8.
The construction method of the wall-mounted guardrail structure of the viaduct comprises the following steps.
The method comprises the following steps of firstly, dividing a guardrail structure into an inner part and an outer part, wherein the outer part is a prefabricated guardrail part 2, and the inner part is a cast-in-situ guardrail part 3.
And step two, manufacturing the prefabricated guardrail block 2.1, and embedding a first connecting rib 5 on the inner side surface of the prefabricated guardrail block 2.1 and at a position corresponding to the hanging beam 4.
And step three, binding a steel bar framework of the cast-in-place guardrail part 3 at the top of the box girder 1 and the position corresponding to the cast-in-place guardrail part 3, and embedding a second connecting bar 6.
Step four, installing the prefabricated guardrail block 2.1: a set of prefabricated guardrail blocks 2.1 is hoisted in place by a crane.
And step five, adjusting the line type after the prefabricated guardrail block 2.1 is hoisted in place, and welding and fixing the first connecting rib 5 and the steel reinforcement framework of the cast-in-place guardrail part 3.
And sixthly, installing an inner side mold and an end mold of the cast-in-place guardrail part 3, and fixing the template by using a support frame.
And seventhly, pouring concrete of the cast-in-place guardrail part 3 and maintaining, so that construction is finished.
In the second step, when the prefabricated guardrail block 2.1 is the prefabricated guardrail block arranged at the bottom of the first street lamp, a lamp post platform 8 connected with a lamp post 7 is arranged on the outer side of the prefabricated guardrail block 2.1; a first line groove 10 is embedded in the prefabricated guardrail block 2.1; the upper end of the first wire groove 10 is located at the top of the prefabricated guardrail block 2.1, and the lower end of the first wire groove 10 extends to the lower portion of the inner side face of the prefabricated guardrail block 2.1 and is located below the hanging beam 4.
In the embodiment, when the prefabricated guardrail block 2.1 is a prefabricated guardrail block arranged at the bottom of a street lamp other than the first street lamp, a lamp post platform 8 connected with a lamp post 7 is arranged on the outer side of the prefabricated guardrail block 2.1; a first line groove 10 is embedded in the prefabricated guardrail block 2.1; the upper end of the first line groove 10 is positioned at the top of the prefabricated guardrail block 2.1, and the lower end of the first line groove 10 extends to the middle of the inner side surface of the prefabricated guardrail block 2.1 and is positioned above the hanging beam 4; step seven, when concrete of the cast-in-place guardrail part 3 is poured, a second trunking 11 is pre-buried in the cast-in-place guardrail part 3 along the longitudinal direction at a position corresponding to the height position of the lower port of the first trunking 10; the first wire groove 10 is communicated with the second wire groove 11; and a maintenance opening 12 is reserved on the inner side surface of the cast-in-situ guardrail part 3 and at a position corresponding to the lower port of the first linear groove 10.
In this embodiment, the cast-in-place guardrail part 3 is sequentially divided into an upper section 3.1, a transition section 3.2 and a lower section 3.3 from top to bottom; the inner side surface of the lower section 3.3 is a vertical plane, and the top of the lower section 3.3 is flush with the top surface of the hanging beam 4; the inner side surface of the transition section 3.2 is an inclined surface which gradually inclines outwards from bottom to top, and the height of the transition section 3.2 is not less than 0.25 m; the inner side surface of the upper section 3.1 is a vertical plane, and the top of the upper section 3.1 is flush with the top surface of the prefabricated guardrail block 2.1.
In this embodiment, the cover plate 13 is connected to the cast-in-place guardrail section 3 by screws.
The above embodiments are not intended to be exhaustive or to limit the invention to other embodiments, and the above embodiments are intended to illustrate the invention and not to limit the scope of the invention, and all applications that can be modified from the invention are within the scope of the invention.
Claims (10)
1. A viaduct wall-mounted guardrail structure is arranged on two sides of a box girder (1); the method is characterized in that: comprises a prefabricated guardrail part (2) and a cast-in-place guardrail part (3); the prefabricated guardrail part (2) is formed by splicing a group of prefabricated guardrail blocks (2.1), and each prefabricated guardrail block (2.1) is a prefabricated reinforced concrete rectangular block; a hanging beam (4) is arranged at the lower part of the inner side surface of the prefabricated guardrail block (2.1) along the longitudinal length; the prefabricated guardrail block (2.1) is hung on the side edge of the box girder (1) through a hanging beam (4); a first connecting rib (5) is arranged in the prefabricated guardrail block (2.1) and at the position corresponding to the hanging beam (4); the first connecting ribs (5) are provided with a group and are arranged at intervals along the longitudinal direction; each first connecting rib (5) is annular, the outer side edge of each first connecting rib (5) is embedded in the prefabricated guardrail block (2.1), and the inner side edge of each first connecting rib (5) exceeds the inner side surface of the prefabricated guardrail block (2.1) and extends into the position of the cast-in-place guardrail part (3); the cast-in-place guardrail part (3) is poured on the inner side of the prefabricated guardrail part (2) along the whole length of the edge of the box girder (1), and the top of the cast-in-place guardrail part (3) is flush with the top of the prefabricated guardrail part (2); a second connecting rib (6) is arranged at the top of the box girder (1) and at a position corresponding to the cast-in-place guardrail part (3); the second connecting rib (6) is annular, the bottom edge of the second connecting rib (6) is embedded in the box girder (1), and the top edge of the second connecting rib (6) exceeds the top surface of the box girder (1) and extends into the cast-in-place guardrail part (3).
2. The overpass wall-hanging guardrail structure of claim 1, wherein: the height of the prefabricated guardrail part (2) is 1.5-2 m, the width of the prefabricated guardrail part (2) is 0.8-1.2 m, and the thickness of the prefabricated guardrail part (2) is 0.05-0.1 m; the distance between the hanging beam (4) and the bottom edge of the prefabricated guardrail part (2) is 0.4-0.6 m, the height of the hanging beam (4) is not less than 0.2m, and the width of the hanging beam (4) is not less than 0.1 m.
3. The overpass wall-hanging guardrail structure of claim 1, wherein: the distance between the inner side surface of the cast-in-place guardrail part (3) and the inner side surface of the prefabricated guardrail part (2) is not less than 0.2 m.
4. The overpass wall-hanging guardrail structure of claim 1, wherein: when the top of the prefabricated guardrail block (2.1) is provided with a street lamp; a lamp post platform (8) connected with a lamp post (7) is arranged on the outer side of the prefabricated guardrail block (2.1); the vertical section of the lamp post platform (8) is triangular, and the lamp post platform (8) and the prefabricated guardrail block (2.1) are integrally formed; the height of the lamp post platform (8) is not less than 1 m; the thickness of the lamp post platform (8) is gradually reduced from top to bottom, and the thickness of the top surface of the lamp post platform is 0.3-0.5 m; a connecting plate (9) is embedded in the top of the lamp post platform (8); the lamp post (7) is fixedly connected to the connecting plate (9); a first wire groove (10) is pre-buried in the prefabricated guardrail block (2.1); the upper end of the first wire groove (10) is connected to the bottom of the lamp post (7).
5. The overpass wall-hanging guardrail structure of claim 4, wherein: when the street lamp is the first street lamp, the lower end of the first wire casing (10) extends to the bottom of the box girder (1), extends to the outside of the box girder (1) from the lower part of the box girder (1) and is connected with the distribution box.
6. The overpass wall-hanging guardrail structure of claim 4, wherein: when the street lamp is not the first street lamp, the lower end of the first wire groove (10) extends to the inner side surface of the prefabricated guardrail block (2.1) and a position 0.3-0.4 m away from the top surface of the box girder (1); a second trunking (11) is pre-buried in the cast-in-place guardrail part (3) along the longitudinal through length at the position corresponding to the height of the lower port of the first trunking (10); the first wire groove (10) is communicated with the second wire groove (11); an access hole (12) is formed in the inner side surface of the cast-in-place guardrail part (3) at a position corresponding to the lower port of the first trunking (10); the width of the access hole (12) is 0.25-0.35 m, and the length of the access hole (12) is 0.25-0.35 m; a cover plate (13) is covered on the access hole (12).
7. The overpass wall-hanging guardrail structure of claim 1, wherein: construction joints (14) are reserved between the longitudinally adjacent prefabricated guardrail blocks (2.1); the width of the construction joint (14) is 0.01-0.05 m; the construction joint (14) is filled with foam boards.
8. The construction method of the overpass wall-hanging guardrail structure of any one of claims 1-7, characterized by comprising the following steps:
the method comprises the following steps that firstly, a guardrail structure is divided into an inner part and an outer part, the outer part is a prefabricated guardrail part (2), and the inner part is a cast-in-place guardrail part (3);
secondly, manufacturing a prefabricated guardrail block (2.1), and embedding a first connecting rib (5) on the inner side surface of the prefabricated guardrail block (2.1) at a position corresponding to the hanging beam (4);
binding a steel bar framework of the cast-in-place guardrail part (3) at the top of the box girder (1) and the position corresponding to the cast-in-place guardrail part (3), and embedding a second connecting bar (6);
step four, installing the prefabricated guardrail block (2.1): hoisting a group of prefabricated guardrail blocks (2.1) in place by a crane;
fifthly, adjusting the line shape after the prefabricated guardrail block (2.1) is hoisted in place, and welding and fixing the first connecting rib (5) and the steel reinforcement framework of the cast-in-place guardrail part (3);
installing an inner side mold and an end mold of the cast-in-place guardrail part (3), and fixing the template by using a support frame;
and seventhly, pouring concrete of the cast-in-place guardrail part (3) and maintaining, and finishing construction.
9. The construction method of the viaduct wall-hanging guardrail structure of claim 8, wherein: in the second step, when the prefabricated guardrail block (2.1) is the prefabricated guardrail block arranged at the bottom of the first street lamp, a lamp post platform (8) connected with a lamp post (7) is arranged on the outer side of the prefabricated guardrail block (2.1); a first wire groove (10) is pre-embedded in the prefabricated guardrail block (2.1); the upper end of the first wire groove (10) is located at the top of the prefabricated guardrail block (2.1), and the lower end of the first wire groove (10) extends to the lower portion of the inner side face of the prefabricated guardrail block (2.1) and is located at a position below the hanging beam (4).
10. The construction method of the viaduct wall-hanging guardrail structure of claim 8, wherein: in the second step, when the prefabricated guardrail block (2.1) is a prefabricated guardrail block arranged at the bottom of a street lamp other than the first street lamp, a lamp post platform (8) connected with a lamp post (7) is arranged on the outer side of the prefabricated guardrail block (2.1); a first wire groove (10) is pre-embedded in the prefabricated guardrail block (2.1); the upper end of the first wire groove (10) is positioned at the top of the prefabricated guardrail block (2.1), and the lower end of the first wire groove (10) extends to the middle of the inner side surface of the prefabricated guardrail block (2.1) and is positioned above the hanging beam (4); step seven, when concrete of the cast-in-place guardrail part (3) is poured, a second line groove (11) is pre-buried in the cast-in-place guardrail part (3) along the longitudinal direction at the position corresponding to the height position of the lower port of the first line groove (10); the first wire groove (10) is communicated with the second wire groove (11); an access hole (12) is reserved on the inner side surface of the cast-in-place guardrail part (3) and at the position corresponding to the lower port of the first trunking (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100730.8A CN110700094A (en) | 2019-11-12 | 2019-11-12 | Viaduct wall-mounted guardrail structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100730.8A CN110700094A (en) | 2019-11-12 | 2019-11-12 | Viaduct wall-mounted guardrail structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110700094A true CN110700094A (en) | 2020-01-17 |
Family
ID=69205903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911100730.8A Pending CN110700094A (en) | 2019-11-12 | 2019-11-12 | Viaduct wall-mounted guardrail structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110700094A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095460A (en) * | 2020-08-17 | 2020-12-18 | 上海市政工程设计研究总院（集团）有限公司 | Transition section connecting structure for connecting metal beam column type guardrail and concrete guardrail |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050071444A (en) * | 2005-06-16 | 2005-07-07 | 김길평 | Protection wall of bridge |
| DE202008007751U1 (en) * | 2008-06-10 | 2008-09-18 | Ehlert, Helmut | Guidance and protection device for amphibians |
| US7614830B1 (en) * | 2003-04-07 | 2009-11-10 | Tri-State Construction, Inc. | Pre-cast retaining wall system and method |
| US8104130B2 (en) * | 2007-09-27 | 2012-01-31 | Marc Lerner | Bridge structure |
| CN102493340A (en) * | 2011-12-19 | 2012-06-13 | 中国一冶集团有限公司 | External mounting type anti-collision guardrails for landscape bridge |
| CN205678615U (en) * | 2016-06-02 | 2016-11-09 | 上海华城工程建设管理有限公司 | The pre-buried pedestal of viaduct bridge guardrail lamp stand |
| CN106567329A (en) * | 2016-11-07 | 2017-04-19 | 上海市政工程设计研究总院（集团）有限公司 | Semi-prefabricated reinforced concrete wall type guardrail |
| CN106567328A (en) * | 2016-11-07 | 2017-04-19 | 上海市政工程设计研究总院（集团）有限公司 | Half-prefabricated reinforced concrete wall-type guardrail construction process |
| CN206428583U (en) * | 2016-11-07 | 2017-08-22 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of to be used for the guardrail prefabricated concrete board of half prefabricated reinforced concrete wall fence |
| CN109763424A (en) * | 2019-01-08 | 2019-05-17 | 中冶南方工程技术有限公司 | A kind of full precast concrete anticollision barrier and construction method |
| CN209052996U (en) * | 2018-06-25 | 2019-07-02 | 德州市公路工程总公司 | Cast-in-place concrete wall anticollision barrier overall binding steel reinforcement cage stabilisation system |
-
2019
- 2019-11-12 CN CN201911100730.8A patent/CN110700094A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7614830B1 (en) * | 2003-04-07 | 2009-11-10 | Tri-State Construction, Inc. | Pre-cast retaining wall system and method |
| KR20050071444A (en) * | 2005-06-16 | 2005-07-07 | 김길평 | Protection wall of bridge |
| US8104130B2 (en) * | 2007-09-27 | 2012-01-31 | Marc Lerner | Bridge structure |
| DE202008007751U1 (en) * | 2008-06-10 | 2008-09-18 | Ehlert, Helmut | Guidance and protection device for amphibians |
| CN102493340A (en) * | 2011-12-19 | 2012-06-13 | 中国一冶集团有限公司 | External mounting type anti-collision guardrails for landscape bridge |
| CN205678615U (en) * | 2016-06-02 | 2016-11-09 | 上海华城工程建设管理有限公司 | The pre-buried pedestal of viaduct bridge guardrail lamp stand |
| CN106567329A (en) * | 2016-11-07 | 2017-04-19 | 上海市政工程设计研究总院（集团）有限公司 | Semi-prefabricated reinforced concrete wall type guardrail |
| CN106567328A (en) * | 2016-11-07 | 2017-04-19 | 上海市政工程设计研究总院（集团）有限公司 | Half-prefabricated reinforced concrete wall-type guardrail construction process |
| CN206428583U (en) * | 2016-11-07 | 2017-08-22 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of to be used for the guardrail prefabricated concrete board of half prefabricated reinforced concrete wall fence |
| CN209052996U (en) * | 2018-06-25 | 2019-07-02 | 德州市公路工程总公司 | Cast-in-place concrete wall anticollision barrier overall binding steel reinforcement cage stabilisation system |
| CN109763424A (en) * | 2019-01-08 | 2019-05-17 | 中冶南方工程技术有限公司 | A kind of full precast concrete anticollision barrier and construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095460A (en) * | 2020-08-17 | 2020-12-18 | 上海市政工程设计研究总院（集团）有限公司 | Transition section connecting structure for connecting metal beam column type guardrail and concrete guardrail |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201217898Y (en) | Concrete prefabricated stairs | |
| CN110761400B (en) | Connecting structure of prefabricated integral convex window and assembling method thereof | |
| CN111926973A (en) | Stably-connected laminated plate | |
| CN110747754B (en) | Shear-resisting reinforcing method for oblique section of wide hollow slab | |
| CN107401217A (en) | A kind of beamless hollow floor chamber concrete-filled steel tube shear wall combined structure system and method | |
| CN110939212A (en) | Connecting structure and construction method of assembled shear wall structure | |
| KR101765334B1 (en) | Construction methods of precast concrete slab having its connection part being concealed by coupled ribs and, precast concrete slab used therefor | |
| CN105220792B (en) | A kind of prefabricated concealed bracings energy-consuming shear wall and its assemble method | |
| CN113738007A (en) | Truss floor plate | |
| CN114427258A (en) | High-altitude large-span cantilever concrete member disassembly-free construction system and construction method | |
| CN111502080A (en) | Steel-concrete composite structure frame-cast-in-place concrete shear wall structure system | |
| CN110700094A (en) | Viaduct wall-mounted guardrail structure and construction method thereof | |
| CN113737936A (en) | Connecting structure and construction method of prefabricated combined duplex balcony | |
| CN219671054U (en) | Steel-concrete combined small box girder prefabricated by integral hoisting | |
| CN113027021A (en) | Support-free prefabricated floor slab with bracket | |
| CN209837333U (en) | Reinforced concrete induction belt structure for post-cast strip position | |
| CN204609416U (en) | A kind of reinforced concrete water pond | |
| CN208328647U (en) | A kind of durable lower flange hollow slab bridge of the quick prefabricated assembled light in city | |
| CN111424921A (en) | Construction method for rear hole opening of top air duct of prefabricated rail of subway station | |
| CN110700873A (en) | Prefabricated rail top air duct for subway station and construction method thereof | |
| CN104895379A (en) | Reinforced concrete water pool and construction method for same | |
| CN210636300U (en) | Auxiliary facilities at anchoring and bracing wire position under railway integral assembly bridge floor | |
| CN210481900U (en) | Vertical lattice type prefabricated assembly segment and high-speed railway foundation assembled by same | |
| CN112281635A (en) | Novel track full-assembly type integrated industrialization system | |
| CN209397805U (en) | Glomeration builds the unidirectional precast hollow slab bidirectional stress superposed floor of variable cross-section |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200117 |
|
| WD01 | Invention patent application deemed withdrawn after publication |