CN208430428U - A kind of flexible reinforced concrete bridge deck pavement structure - Google Patents

A kind of flexible reinforced concrete bridge deck pavement structure Download PDF

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Publication number
CN208430428U
CN208430428U CN201820619107.8U CN201820619107U CN208430428U CN 208430428 U CN208430428 U CN 208430428U CN 201820619107 U CN201820619107 U CN 201820619107U CN 208430428 U CN208430428 U CN 208430428U
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rubber
concrete
surface layer
layer
rubber concrete
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骆春雨
刘海涛
曹景
胡江
唐颖
周莉
孙东利
刘聪
卜浩然
程晓明
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Tianjin Municipal Engineering Design and Research Institute
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Tianjin Municipal Engineering Design and Research Institute
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Abstract

The utility model belongs to technical field of civil engineering, disclose a kind of flexible reinforced concrete bridge deck pavement structure, it is made of Rubber Concrete surface layer and Rubber Concrete base, with a thickness of 15~18cm, the thickness ratio of Rubber Concrete surface layer and Rubber Concrete base is 1:(2~2.5);No-reinforcing-bar inside Rubber Concrete surface layer;Single-layer bidirectional steel mesh is preset in Rubber Concrete base tensile region.The utility model only constitutes deck installation structure by surface layer and base, is not laid with waterproof layer and asphalt concrete pavement layer all of Rubber Concrete, replaces the two effect by material self character;With good impervious and cracking resistance, suitable intensity and preferable economic technology benefit; it can be improved its anti-deformation and driving comfort level when being applied in engineering; it protects beam body from rain erosion, frost heave action, prolongs its service life, reduce maintenance and maintenance cost.

Description

A kind of flexible reinforced concrete bridge deck pavement structure
Technical field
The utility model belongs to technical field of civil engineering, in particular to a kind of deck installation structure.
Background technique
Deck paving is also referred to as runway and mats formation, and function is to keep bridge up train steadily comfortable, protection girder integral part Carriageway plate by the direct abrasion of vehicle tyre, does not prevent erosion of the girder by rainwater, and can play one to vehicle load Fixed distribution effect.
Bridge Surface Paving by Cement is a kind of traditional structure type, once big with rigidity, intensity is high, maintenance costs is low etc. Advantage is widely adopted, but under the long term of vehicular load, the self problem of concrete pavement layer gradually exposes Come, the diseases such as surface cracking, fatigue crack, infiltration cause later period maintenance expense to increase, structure service life declines.To improve bridge The service performance of face pave-load layer, admixture and additive are added into concrete can improve the durability of structure to a certain extent. Meanwhile engineering circles and academia turn to and mix to some New Style Concrete Materials such as steel fiber reinforced concrete, bituminous concrete, polymer Solidifying soil etc. are used for the pilot study of deck paving, improve cracking resistance and anti-fatigue ability.
In existing well-known technique, bridge deck pavement by grain formula bituminous concrete in 4cm particulate formula bituminous concrete, 6cm, Waterproof layer, 4 layers of water-proof concrete layer composition.There are some diseases in use and maintenance in the bridge of this deck installation structure layer Problem, is mainly shown as the decohesion of pave-load layer and beams of concrete, and hogging moment effect, unbalance loading etc. generate fatigue crack, temperature Destruction caused by crackle, cup shake and concrete impermeability decline, has seriously affected the normal use and friendship of bridge Logical safety.Not only the cost is relatively high for the prior art, complicated construction technique, and virtually considerably increase life cycle management at This.
In recent years, with the fast development of Global Auto industry and the growth year by year of car ownership, what is generated every year is useless Pile up like a mountain for old tire, wherein most of be incinerated, fill or stack, the global problem of environmental pollution of bring is also urgently It solves and breaks through.And rubber grain is that waste and used rubber tyre obtains after over mechanical processing and processing, has certain elasticity. It is a kind of environmentally protective new measure that Resource Rationalization utilizes on building materials that rubber grain, which utilizes,.Currently, rubber aggregate is made It is incorporated into concrete for a kind of soft segments and has gradually been valued by people, using waste tire rubber granule as admixture It applies in Practical Project field, the processing of waste old harmful is become to the reasonable utilization of resource, be resource-effective and environment guarantor Inevitable direction under shield policy.
Utility model content
To be solved in the utility model is easy to crack, durability present in existing deck installation structure well-known technique The technical problems such as difference, maintenance cost height propose a kind of flexible reinforced concrete bridge deck pavement structure, all of rubber collection Expect concrete, deck installation structure is only constituted by surface layer and base, waterproof layer and asphalt concrete pavement layer are not laid with, by material Expect that self character replaces the two effect;Deck installation structure of the invention have it is good it is impervious with cracking resistance, it is suitable strong Degree and preferable economic technology benefit, can be improved its anti-deformation and driving comfort level, protection when being applied in engineering Beam body is prolonged its service life from rain erosion, frost heave action, reduces maintenance and maintenance cost.
In order to solve the above-mentioned technical problem, the utility model is achieved by technical solution below:
A kind of flexible reinforced concrete bridge deck pavement structure, by Rubber Concrete surface layer and Rubber Concrete Base is constituted, and the thickness ratio of the Rubber Concrete surface layer and the Rubber Concrete base is 1:(2~2.5); Single-layer bidirectional steel mesh is preset in Rubber Concrete base tensile region.
Preferably, the overall thickness of the Rubber Concrete surface layer and the Rubber Concrete base be 15~ 18cm。
Preferably, the single-layer bidirectional steel mesh is the mesh sheet of longitudinal reinforcement and transverse steel square crossing distribution, with Clear distance between top surface of the beam is 5cm;Reinforcing bar is HRB400 grades of 10 Ribbed Bars of Ф, is laid with 10 × 10cm of spacing, laying depth 10cm.
Preferably, the Rubber Concrete surface layer and the Rubber Concrete base is mixed by rubber aggregate Solidifying soil is mated formation, and rubber aggregate partial size used in the Rubber Concrete is 16 mesh, volume 92.3kg/m3
The beneficial effects of the utility model are:
(1) the flexible reinforced concrete bridge deck pavement structure of the utility model, by Rubber Concrete surface layer and rubber Glue aggregate concrete base is constituted, and can lower elasticity modulus, enhancing structure flexibility, deformation performance, cracking resistance, impact resistance Energy, impervious endurance quality etc.;It is said from design angle, reinforcing bar can be used no or little in work progress, thus brought design Certain benefit can be equally generated with the simplification in construction;And compare asphalt concrete pavement layer, flexible reinforced concrete bridge deck Pavement construction technique is relatively simple, and Technical Economy is preferable.
(2) the flexible reinforced concrete bridge deck pavement structure of the utility model, by Rubber Concrete surface layer and rubber Glue aggregate concrete base is constituted, can the noise reduction performance of enhancing structure mention while with good flatness and roughness High travel safety and comfort level, unique anti-permeability performance protect beam body from rain erosion, frost heave action;In equal conditions Under, compared to common deck paving, its service life can extend 1 times, greatly reduction overall life cycle cost, good in economic efficiency.
(3) the flexible reinforced concrete bridge deck pavement structure of the utility model, only includes Rubber Concrete material Surface layer and base, waterproof layer and asphalt concrete layer can be saved, pavement thickness can reduce by 10%;Every cubic meter of concrete simultaneously Cost can reduce by 20% compared to portland cement concrete pave-load layer, greatly save cost of investment.
(4) the flexible reinforced concrete bridge deck pavement structure of the utility model, is rationally utilized Rubber Concrete This material can alleviate waste and used rubber tyre harmful to a certain extent and handle brought problem of environmental pollution, realize useless Object recycling and reusing is turned waste into wealth.
Detailed description of the invention
Fig. 1 is the flexible reinforced concrete bridge deck pavement structural schematic diagram of the utility model;
Fig. 2 is the steel bar arrangement figure of the flexible reinforced concrete bridge deck pavement structure of the utility model.
In figure: 1- Rubber Concrete surface layer, 2- Rubber Concrete base, 3- single-layer bidirectional steel mesh.
Specific embodiment
For the content, feature and effect that can further appreciate that the utility model, the following examples are hereby given, and cooperates attached drawing Detailed description are as follows:
As depicted in figs. 1 and 2, a kind of flexible reinforced concrete bridge deck pavement structure, pave-load layer are present embodiments provided The all Rubber Concretes of material, are not laid with waterproof layer and asphalt concrete pavement layer, replace by material self character The two effect.Deck installation structure is made of Rubber Concrete surface layer 1 and Rubber Concrete base 2, with a thickness of The thickness ratio of 15cm, Rubber Concrete surface layer 1 and Rubber Concrete base 2 is 1:2.Rubber Concrete surface layer 1 with a thickness of 5cm, internal no-reinforcing-bar;Rubber Concrete base 2 presets single-layer bidirectional reinforcing bar with a thickness of 10cm in tensile region Net 3.Generally, Rubber Concrete surface layer 1 and the overall thickness of Rubber Concrete base 2 are 15~18cm, rubber collection The thickness ratio for expecting concrete topping and Rubber Concrete base is 1:2~1:2.5;Rubber Concrete surface thickness is 3~5cm, Rubber Concrete groundwork thickness are 12~15cm.
Single-layer bidirectional steel mesh 3 is the mesh sheet of longitudinal reinforcement and transverse steel square crossing distribution, net between top surface of the beam Away from for 5cm;Reinforcing bar is HRB400 grades of 10 Ribbed Bars of Ф, is laid with 10 × 10cm of spacing, laying depth 10cm;Longitudinal reinforcement and vertical It is steel tendon binding to reinforcing bar, longitudinal reinforcement and transverse steel Joining Technology, key position is using welding, and framework of steel reinforcement is for increasing Strong structure overall deformation performance.
Rubber Concrete surface layer 1 is mated formation with Rubber Concrete base 2 by Rubber Concrete, rubber Rubber aggregate partial size used in glue aggregate concrete is 16 mesh, volume 92.3kg/m3.Rubber aggregate is incorporated into deck paving coagulation In soil, the deformation performance of structure, cracking resistance, the impervious endurance qualities such as freeze proof are considerably increased.
The work progress of the provided deck installation structure of the utility model is provided by taking certain engineering as an example below:
(1) Rubber Concrete for being suitable for Rubber Concrete surface layer 1 and Rubber Concrete base 2 is chosen Match ratio specifically includes that the side such as cement category and additive adaptability, working performance of concrete, physical and mechanical property, durability The experimental study in face.The prioritization scheme of the present embodiment is to obtain by the optimization to rubber aggregate partial size, volume and be suitable for mating formation The rubber aggregate parameter of layer.Partial size takes 16 mesh, volume 92.3kg/m3
(2) the design work for the theoretical formula and vehicle-mounted and environmental factor progress deck paving test section assumed based on linear elasticity Make.
It (3), need to be in rubber to prevent 2 hogging moment area institute tension stress of Rubber Concrete base is excessive from leading to Transverse Cracks Single-layer bidirectional steel mesh 3 is preset in 2 tensile region of glue aggregate concrete base.According to bridge load situation, show that paving calculates lotus It carries, determines amount of reinforcement and laying spacing according to load is calculated.The present embodiment, which determines, selects reinforcing bar HRB400 grades of Ф 10 with ribbing Reinforcing bar is laid with 10 × 10cm of spacing, laying depth 10cm.Reinforcing bar Joining Technology is steel tendon binding, and key position uses welding, The overall deformation performance of structure can be enhanced in framework of steel reinforcement.
(4) precast concrete beam lifting, anticollision barrier installation and steel mesh are completed to be laid with, calculates Rubber Concrete face Layer 1 and 2 net area summation of Rubber Concrete base and the Rubber Concrete amount of mixing and stirring.
(5) Rubber Concrete base 2 constructs: scene is stirred using self-discharge concrete mixer, is stirred every time The amount of mixing is 0.2m3.Rubber Concrete slump is tested at scene, log.It is transported using dumper mixed Solidifying soil, after spreading out, is vibrated with internal vibration stick, vibrating time 30s, and mobile spacing is not more than 50cm.
(6) Rubber Concrete surface layer 1 is constructed: surface is smoothed out with walking beam, floating rule, roller beam after the completion of vibrating, Using floor trowelling machine polishing surface.One layer of geotextiles are covered after concrete final set in Rubber Concrete surface layer 1, uniformly Watering is conserved, while noticing that heat preservation is sun-proof in maintenance 7d.
(7) if dry sample is extracted in construction site, laboratory testing is carried out.After to be tested section of opening is open to traffic, rubber collection is tested Expect the coefficient of friction on 1 surface of concrete topping, cleavage strength etc. is surveyed in wholwe-hearted sampling.
(8) conclude that the utility model proposes flexible reinforced concrete bridge deck pavement structure largely solve Great number of issues in existing deck paving well-known technique of having determined.Its feature include: low elastic modulus, preferable deformation performance, Toughness and antiskid performance etc. improve anti-crack ability, endurance quality and the service life of bridge structure, greatly reduce the life-cycle Life cycle costing has good Technical Economy.
Although being described above in conjunction with preferred embodiment of the attached drawing to the utility model, the utility model is not It is confined to above-mentioned specific embodiment, the above mentioned embodiment is only schematical, is not restrictive, ability The those of ordinary skill in domain is not departing from invention objective and scope of the claimed protection feelings under the enlightenment of the utility model Under condition, the specific transformation of many forms can also be made, these are belonged within the protection scope of the utility model.

Claims (4)

1. a kind of flexible reinforced concrete bridge deck pavement structure, which is characterized in that by Rubber Concrete surface layer and rubber Aggregate concrete base is constituted, and the thickness ratio of the Rubber Concrete surface layer and the Rubber Concrete base is 1: (2~2.5);Single-layer bidirectional steel mesh is preset in Rubber Concrete base tensile region.
2. a kind of flexible reinforced concrete bridge deck pavement structure according to claim 1, which is characterized in that the rubber Aggregate concrete surface layer and the overall thickness of the Rubber Concrete base are 15~18cm.
3. a kind of flexible reinforced concrete bridge deck pavement structure according to claim 1, which is characterized in that the single layer Two-way steel mesh is the mesh sheet of longitudinal reinforcement and transverse steel square crossing distribution, and the clear distance between top surface of the beam is 5cm;Reinforcing bar For HRB400 grades of 10 Ribbed Bars of Ф, it is laid with 10 × 10cm of spacing, laying depth 10cm.
4. a kind of flexible reinforced concrete bridge deck pavement structure according to claim 1, which is characterized in that the rubber Aggregate concrete surface layer is mated formation with the Rubber Concrete base by Rubber Concrete.
CN201820619107.8U 2018-04-27 2018-04-27 A kind of flexible reinforced concrete bridge deck pavement structure Active CN208430428U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110820578A (en) * 2019-11-15 2020-02-21 中交一公局第五工程有限公司 Construction method for paving small-load steel structure bridge deck
CN113403939A (en) * 2021-06-04 2021-09-17 武汉理工大学 Bridge deck pavement structure based on high-performance rubber concrete
CN113463448A (en) * 2020-03-31 2021-10-01 比亚迪股份有限公司 Track beam and construction method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110820578A (en) * 2019-11-15 2020-02-21 中交一公局第五工程有限公司 Construction method for paving small-load steel structure bridge deck
CN113463448A (en) * 2020-03-31 2021-10-01 比亚迪股份有限公司 Track beam and construction method thereof
CN113403939A (en) * 2021-06-04 2021-09-17 武汉理工大学 Bridge deck pavement structure based on high-performance rubber concrete

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