CN215366812U

CN215366812U - Waterproof paving structure for outdoor steel box girder overpass

Info

Publication number: CN215366812U
Application number: CN202121936799.7U
Authority: CN
Inventors: 李佳瑞; 常松; 程方园; 魏新; 孙丽
Original assignee: Harbin Municipal Engineering Design Institute Co Ltd
Current assignee: Harbin Municipal Engineering Design Institute Co Ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-12-31
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses a waterproof paving structure for an outdoor steel box girder overpass, which comprises a plurality of steps positioned on a steel box girder structure, wherein waterproof layers are paved on the vertical surface and the planar surface of each step, an isolating layer is paved on the planar waterproof layer of each step, a cement dry-mixed sand layer is paved on the isolating layer, an anti-skid stone plate is paved on the cement dry-mixed sand layer, a kicking surface decoration member is installed on the outer side vertical surface of the anti-skid stone plate on each step and the outer surface of the vertical surface of the next step adjacent to the anti-skid stone plate, and a dry cement layer is paved between the lower half part of the kicking surface decoration member of each step and the inner vertical surface gap of the anti-skid stone plate of the next step adjacent to the kicking surface decoration member. The waterproof structure has the advantages of good waterproof effect, no wet operation in the construction process and no influence of outdoor environment temperature, and provides great convenience for the construction of waterproof pavement of the outdoor steel box girder overpass.

Description

Waterproof paving structure for outdoor steel box girder overpass

Technical Field

The utility model particularly relates to a waterproof paving structure for an outdoor steel box girder overpass.

Background

With the acceleration of the development pace of modern cities, particularly the large-scale construction of urban expressways, the traveling times of urban vehicles and pedestrians are rapidly increased, the traffic jam is increasingly serious, and the pedestrian overpass is used as a component of an urban walking space, so that the important functions of relieving traffic pressure, evacuating pedestrian stream, providing safe and comfortable traveling environment for pedestrians and the like are exerted in cities, and in urban construction, the landscape aesthetic problem of the overpass also becomes the focus of people's attention increasingly, and becomes a bright landscape line in cities. In recent years, the number of pedestrian overpasses built in large and medium-sized cities at home and abroad is increasing, the landscape function of the pedestrian overpasses is more and more emphasized, and the design of the pedestrian overpasses in the past is often not emphasized in the aspects of modeling and coordination with the surrounding environment, so that the overall landscape of the cities is influenced.

The traditional overpass bridge deck pavement generally adopts a waterproof concrete layer as a steel box girder waterproof protective layer, a surface layer is mostly thin stone, cement mortar is adopted for bonding, the surface layer is thin in material, poor in comfort level, easy to crack and poor in durability; the construction of the waterproof concrete layer is limited by conditions such as climate, temperature and the like, the waterproof effect is poor, and the service life of the steel box girder structure is influenced. The pedestrian overpass is an important component of urban pedestrian space, and along with the development of cities, safety, comfort and beauty gradually become important factors of urban pedestrian overpass design, and a new water-discharging pavement structure of the pedestrian overpass is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the waterproof pavement structure for the outdoor steel box girder overpass, which has good waterproof effect, does not have wet operation in the construction process, is not influenced by outdoor environment temperature and provides great convenience for the waterproof pavement construction of the outdoor steel box girder overpass according to the defects of the bridge deck pavement of the existing pedestrian overpass.

The purpose of the utility model is realized by the following technical scheme: the utility model provides a be used for outdoor steel box girder overpass waterproof paving structure, is including lieing in the structural multistage step of steel box girder, and the facade of every step and planar surface are spread there is the waterproof layer, have spread the isolation layer on the planar waterproof layer of every step, spread the cement dry mix sand bed on the isolation layer, the cement dry mix sand bed above spread anti-skidding stone material board, the surface mounting of the outside facade of anti-skidding stone material board on every step and the facade of its adjacent next step has the kicking surface to decorate the component, the latter half of the kicking surface decoration component of every step is laid dry cement layer between the inboard facade gap of the anti-skidding stone material board of its adjacent next step.

The utility model also has the following technical characteristics:

1. the vertical surface of the outer side of the antiskid stone plate protrudes out of the vertical surface of the next step.

2. The upper part of the vertical surface of the outer side of the antiskid stone plate is provided with a convex edge.

3. The upper half part of the kicking surface decoration component is of a U-shaped groove structure with a downward opening, the middle part of the kicking surface decoration component is of an inclined surface which contracts towards the inner side and is connected with the vertical surface of the lower half part, and the upper end of the kicking surface decoration component is located below the convex edge of the vertical surface of the outer side of the anti-skidding stone plate.

4. The width of the cross section of the U-shaped groove structure in the direction vertical to the length direction is the same as the length of the vertical surface of the convex edge protruding out of the outer side of the antiskid stone plate.

5. The inside parcel of kicking face decorative component has the angle steel.

6. The angle steel is L-shaped, the vertical face of the angle steel is positioned in the U-shaped groove structure of the kick surface decoration component, and part of the bottom surface of the plane of the angle steel is contacted with the upper surface of the step.

7. The waterproof layer of each step extends to the plane and the vertical surface of the inner side of the angle steel.

8. And the vertical surfaces of the inner side and the outer side of the cement dry-mixed sand layer of each step are also paved with isolating layers.

9. And a silicone weather-resistant sealant is coated at the contact part of the kick surface decoration member of each step and the upper plane of the inner side of the antiskid stone plate of the next step adjacent to the kick surface decoration member.

The utility model has the advantages that the building waterproof material is adopted to replace the traditional rigid concrete waterproof, the waterproof material can be flexibly selected according to the actual situation, the waterproof performance is better, and the lower-layer steel box girder structure is more effectively protected; the construction process is not influenced by winter climate in severe cold or cold regions, special treatment is not needed, and construction can be carried out in winter; no wet operation is needed in the construction process, the concrete curing period is not needed, most materials are processed in factories, the site installation is realized, the operation is convenient, and the construction period can be effectively shortened. Promote water-proof effects, greatly strengthened the water proof to steel box girder structure, improved the durability of steel construction. The cement dry-mixed sand is adopted to replace a cement mortar bonding layer, the paving process has no wet operation, the surface layer materials are cut and pressed to be formed by factories, and the construction period can be effectively shortened by assembling on site. The selected waterproof material has better low-temperature resistance, is very suitable for low-temperature environment construction in severe cold and cold regions, and has reliable low-temperature construction quality.

Drawings

FIG. 1 is a cross-sectional view of a waterproof pavement structure for an outdoor steel box girder overpass of the utility model;

FIG. 2 is a cross-sectional view of the nonslip stone plate of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

wherein, 1 antiskid stone material board, 2 cement dry-mixed sand, 3 isolation layers, 4 waterproof layers, 5 steel box girder structures, 6 angle steel, 7 riser decorative components, 8 silicone weather-resistant sealant, 9 dry cement, b step design width, h step design height.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:

example 1

As shown in fig. 1-3, a waterproof paving structure for an outdoor steel box girder overpass comprises multiple steps located on a steel box girder structure, a waterproof layer 4 is paved on the vertical surface and the planar surface of each step, an isolation layer 3 is paved on the planar waterproof layer 4 of each step, a cement dry-mixed sand layer 2 is paved on the isolation layer 3, an antiskid stone plate 1 is paved on the cement dry-mixed sand layer 2, a kicking surface decoration member 7 is installed on the outer side vertical surface of the antiskid stone plate 1 on each step and the outer surface of the vertical surface of the next step adjacent to the antiskid stone plate 1, and a dry cement layer 9 is paved between the lower half part of the kicking surface decoration member 7 of each step and the inner vertical surface gap of the antiskid stone plate 1 of the next step adjacent to the lower half. The vertical surface of the outer side of the antiskid stone plate 1 protrudes out of the vertical surface of the next step. The upper part of the vertical surface of the outer side of the antiskid stone plate 1 is provided with a convex edge. The upper half part of the kick surface decoration component 7 is of a U-shaped groove structure with a downward opening, the middle part of the kick surface decoration component is an inclined surface which contracts inwards and is connected with the vertical surface of the lower half part, and the upper end of the kick surface decoration component 7 is positioned below the convex edge of the vertical surface of the outer side of the anti-skid stone plate. The width of the cross section of the U-shaped groove structure in the direction vertical to the length direction is the same as the length of the vertical surface of the convex edge protruding out of the anti-skid stone plate 1. The inside of the kicking surface decoration component 7 is wrapped with angle steel 6. The angle steel 6 is L-shaped, the vertical surface of the angle steel 6 is positioned in the U-shaped groove structure of the kick surface decoration component 7, and part of the bottom surface of the plane of the angle steel 6 is contacted with the upper surface of the step. The waterproof layer 4 of each step extends to the plane and the vertical surface of the inner side of the angle steel. The vertical surfaces of the inner side and the outer side of the cement dry-mixed sand layer 2 of each step are also paved with isolating layers 3. The contact part of the kick surface decoration component 7 of each step and the upper plane of the inner side 1 of the antiskid stone plate of the next step adjacent to the kick surface decoration component is coated with silicone weather-proof sealant 8.

Natural stone or imitative natural stone can be selected for use to the antiskid stone material board, and its thickness is 60mm, and thinner stone material board surface course comfort level is better, and durability, stability, security performance are higher.

The skirt decorative component is a wiredrawing stainless steel plate with the thickness of 2mm, is formed by pressing in a factory and is assembled on site.

The waterproof layer is a waterproof layer of double-sided self-adhesive polymer modified asphalt waterproof coiled material (without a matrix) with the thickness of 1.5mm and an oak-type asphalt non-cured waterproof coating with the thickness of 2mm, or a single-layer waterproof layer of multi-component high-strength polyurethane waterproof coating with the thickness of 2 mm.

The isolation layer is a non-woven fabric with the function of protecting the waterproof layer.

As shown in fig. 1, b is the designed width of the step, h is the designed height of the step, the antiskid stone plate 1 and the kick surface decoration member 7 in the embodiment are produced in a factory, and the assembly can be simply operated on site, and the size of the member can be flexibly adjusted according to the step size of the overpass.

The construction measures of the embodiment have the beneficial effects that:

A. the waterproof material for building replaces the traditional rigid waterproof concrete, has better waterproof performance, can more effectively protect the lower steel box girder structure, is simple to operate, has low-temperature flexibility reaching minus 40 ℃, has the characteristics of wear resistance and corrosion resistance, has better low-temperature resistance, can be flexibly selected according to actual conditions, is very suitable for low-temperature environment construction in severe cold or cold regions, and has reliable low-temperature construction quality.

B. The 30-thick cement dry-mixed sand is adopted to replace the traditional cement mortar bonding layer, the operation is simple, the cushion layer can be leveled conveniently, the surface material pavement requirement is met, the construction period can be effectively shortened, meanwhile, the operation of the cement dry-mixed sand leveling layer is not influenced by the temperature environment, and the method is suitable for the low-temperature environment construction in severe cold areas.

C. The surface layer is made of 60-thick anti-skid stone plates (natural stone/natural stone imitation), is cut by a factory of a manufacturer and spliced on site, is convenient for construction operation, and is attractive, comfortable, and better in wear resistance and durability.

D. The edge of marking time adopts the angle steel mounting to fix, and the stone material board is fastened between angle steel and steel box girder structure, and safe and reliable makes the stone material mat formation neatly one simultaneously, guarantees pleasing to the eye degree.

E. The step skirting is made of a drawn stainless steel plate with the thickness of 2mm, so that the decorative level of the overpass can be increased, the waterproof layer of the skirting can be protected, the skirting decorative component can be formed by factory profiling and field assembly, and the step skirting is simple and convenient to operate and easy to construct.

Claims

1. The utility model provides a be used for waterproof structure of mating formation of outdoor steel box girder overpass, includes the multistage step that is located steel box girder structure, its characterized in that: waterproof layer (4) have been laid on the facade of every grade of step and planar surface, have laid isolation layer (3) above planar waterproof layer (4) of every grade of step, laid cement dry-mixed sand bed (2) above isolation layer (3), the cement dry-mixed sand bed (2) the higher authority spread anti-skidding stone material board (1), the surface mounting of the outside facade of anti-skidding stone material board (1) on every grade of step and the facade of its adjacent next step has a decorative component of kicking face (7), laid dry cement layer (9) between the latter half of decorative component of kicking face of every grade of step and the inboard facade gap of the anti-skidding stone material board (1) of its adjacent next step.

2. The waterproof pavement structure for the outdoor steel box girder overpass of claim 1, which is characterized in that: the vertical surface of the outer side of the antiskid stone plate (1) protrudes out of the vertical surface of the next step.

3. The waterproof pavement structure for the outdoor steel box girder overpass of claim 2, characterized in that: the upper part of the vertical surface of the outer side of the antiskid stone plate (1) is provided with a convex edge.

4. The waterproof pavement structure for the outdoor steel box girder overpass of claim 3, characterized in that: the upper half part of the kick surface decoration component (7) is of a U-shaped groove structure with a downward opening, the middle part of the kick surface decoration component is an inclined surface which contracts towards the inner side and is connected with the vertical surface of the lower half part, and the upper end of the kick surface decoration component (7) is positioned below the convex edge of the vertical surface on the outer side of the anti-skid stone plate.

5. The waterproof pavement structure for the outdoor steel box girder overpass of claim 4, characterized in that: the cross section width of the U-shaped groove structure in the vertical direction and the length direction is the same as the length of the vertical surface of the convex edge protruding out of the anti-skid stone plate (1).

6. The waterproof pavement structure for the outdoor steel box girder overpass of any one of claims 1-5, wherein: the inside of the kicking surface decoration component (7) is wrapped with angle steel (6).

7. The waterproof pavement structure for the outdoor steel box girder overpass of claim 6, characterized in that: the angle steel (6) is L-shaped, the vertical face of the angle steel (6) is positioned in the U-shaped groove structure of the kick surface decoration component (7), and part of the bottom surface of the plane of the angle steel (6) is in contact with the upper surface of the step.

8. The waterproof pavement structure for the outdoor steel box girder overpass of claim 7, characterized in that: the waterproof layer (4) of each step extends to the plane and the vertical surface of the inner side of the angle steel.

9. The waterproof pavement structure for the outdoor steel box girder overpass of claim 8, characterized in that: the inner side and outer side vertical surfaces of the cement dry-mixed sand layer (2) of each step are also paved with an isolating layer (3).

10. The waterproof pavement structure for the outdoor steel box girder overpass of claim 1, which is characterized in that: and a silicone weather-resistant sealant (8) is coated at the contact part of the kick surface decoration component (7) of each step and the upper plane of the inner side of the antiskid stone plate (1) of the next step adjacent to the kick surface decoration component.