CN104264561A - A non-earthing composite structure for a waterproof pavement layer of a top plate for a road tunnel - Google Patents
A non-earthing composite structure for a waterproof pavement layer of a top plate for a road tunnel Download PDFInfo
- Publication number
- CN104264561A CN104264561A CN201410463151.0A CN201410463151A CN104264561A CN 104264561 A CN104264561 A CN 104264561A CN 201410463151 A CN201410463151 A CN 201410463151A CN 104264561 A CN104264561 A CN 104264561A
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- waterproof
- pave
- layer composite
- epoxy adhesive
- composite construction
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a non-earthing composite structure for a waterproof pavement layer of a top plate for a road tunnel. The structure comprises the following structural layers from top to bottom: a rubber pitch protective layer, a waterproof layer, an epoxy resin priming coat and a cement concrete top plate. The invention provides a composite structure for a waterproof pavement layer of a top plate capable of efficiently resisting drying and watering cycle and impact load of the surface load. The composite structure for a waterproof pavement layer of a top plate has superior waterproof performance and capacity of resisting the impact load, greatly improves the integrity and effectiveness of the waterproof system of the road tunnel, enhances the structural durability and satisfies the waterproof requirement of the top plate of the road tunnel.
Description
Technical field
The present invention relates to construction of underground structure, be specifically related to road tunnel waterproof roofing pave-load layer composite construction under a kind of zero earthing.
Background technology
Along with the development of China's reform and opening-up, economic prosperity, urbanization process are accelerated, the tunnel construction such as municipal highway, subway, plumbing, power cable, air feed is rapid.The construction of subterranean tunnel alleviates the problem of shortage of land resource, improves ground environment and traffic, but underground construction inevitably also exists structural leakage water problems, affects normal operation and the application life in tunnel.Therefore engineering waterproofing design and construction is the important component part that underground tunnel project is implemented.
The top board of shallow earthing underground structure, by being also subject to that temperature becomes while influence on groundwater, the effect of drying and watering cycle and ground level road impact load.If waterproof measure is improper in this case, the durability of structure will be had a strong impact on; And the waterproofing materials on top board does not almost have recoverability, therefore extremely important to the research of the reliability of waterproofing materials.
Investigation shows, zero earthing waterproof roofing difficult point is mainly: (1) tunnel roof is close to zero earthing, owing to lacking the heat insulation of top earthing and cushioning effect, obvious with four seasons temperature Change outside top board, internal-external temperature difference is large, the larger thermal stresses of easy generation, (2) top board directly bears traffic above-ground load (comprising the impact load that vehicle rolls and brakes).These effects make concrete self easily produce crack, affect the self waterproofing system of structure, reduce the application life of structure.
These unfavorable factors in zero earthing top board self waterproofing also have an impact to top board outer waterproofing layer: (1) waterproofing course internal-external temperature difference is large, make waterproofing materials self produce tension stress, require high to the hot strength of material and expansion and contraction.(2) waterproofing materials directly bears the impact load that vehicle rolls and brakes, requirements at the higher level are proposed to material self-strength, impact property and abrasion resistance, the reliability that waterproofing materials and top board bond to be ensured simultaneously, flake even depart from structure in order to avoid draw waterproofing materials, cause waterproofing course to lose efficacy.
Usual underground construction has more than 2m earthing, and its waterproof type have accumulated certain experience after experienced by many project practice.But when underground construction becomes shallow earthing or zero earthing, just create series of problems, occurred bridge waterproof and the joint descending structurally waterproof traditionally, that a kind of conventional waterproof mode is all difficult to completely well adapt to this pattern.
Rubber powder levigate for junked tire is applied to flexible pavement, has the history of decades.In order to promote a conservation culture, protection of the environment and natural resource, the importance that over nearly 10 years, scrap rubber utilizes is once more by understanding and concern.Especially the most general as Old cement concrete transformation asphalt overlay.In order to prevent reflection crack, application of rubber pitch arranges stress absorbing layer and have received good effect, especially progressively defines the basic model that rigid pavement " changes black " to transform in vain.Rubber asphalt stress absorbing layer refers to and is sprayed on road surface by rubberized asphalt binder, and gathering materials of spreading single particle size is covered subsequently, becomes binder film through rolling.Different according to spreading pellet particle size, its thickness changes within the scope of 9 ~ 12mm.Asphaltic road-mix surface course is overlayed on this layer, then this one deck of rubber asphalt film becomes stress absorption interlayer (Stress-absorbing Membrane Interlayer, be called for short SAMI), upload stress because it has absorption sub-layer and make it the function of dissipation, also there is the ability preventing rainwater infiltration simultaneously, therefore there is the effect of waterproofing course.But the data of there is no shows, rubber asphalt stressor layers is applied to road tunnel waterproof roofing paving structure.
Summary of the invention
The object of the present invention is to provide and a kind of there is road tunnel waterproof roofing pave-load layer composite construction under zero earthing of excellent water resistance and opposing impact load ability.
To achieve these goals; technical scheme of the present invention is as follows: a kind of zero earthing lower roof plate waterproof pave-load layer composite construction, is characterized in that this structure is followed successively by rubber asphalt topping, waterproofing course, epoxy resin scratch coat, cement concrete top board from top to bottom.
Cement concrete top board arranges draining horizontal wall inscription, and the gradient is preferably 0.5% ~ 1%, strengthens from drain function.
Epoxy resin scratch coat adopts epoxy adhesive brushing one deck or two-layer, epoxy adhesive consumption 0.5 ~ 1kg/m
2, at epoxy adhesive surface spreading quartz sand.
Waterproofing course adopts heat molten type waterproof roll, and thickness is not less than 4mm.
Rubber asphalt topping adopts rubberized asphalt binder and single particle size to gather materials, through rolling the binder film of formation.
Waterproof have employed three-layer protection system: epoxy resin scratch coat+waterproofing course+rubber asphalt topping.Epoxy resin can effectively be gone down to the grass-roots units surface, can not only closed concrete top board, prevent moisture in concrete from rising to substrate surface, also play the waterproof action making up waterproofing course simultaneously, guarantee the bonding of concrete roof and waterproofing course.Waterproofing course adopts modified asphalt hot-melt type waterproof roll, has good adhesive property with rubber asphalt transition zone.Rubber asphalt transition zone refers to and adopts rubberized asphalt binder and single particle size to gather materials, through rolling the binder film of formation; Rubber asphalt transition zone is arranged between waterproofing course and asphalt mixture surfacing, both the effect of tack coat and waterproofing course can have been played, also can be used as stress absorbing layer: the reflection crack that control concrete roof causes due to drying shrinkage or temperature contracting develops to asphalt mixture surfacing simultaneously, waterproof failure after effectively preventing the waterproofing course caused because of roof break from tearing, plays waterproofing course effect again.
Based on above-mentioned theory, a kind of waterproof roofing pave-load layer composite construction of the present invention, is followed successively by rubber asphalt topping, waterproofing course, epoxy resin scratch coat, cement concrete top board from top to bottom.Accordingly, reach the water resistance of underground structure under raising zero earthing, extend the application life of road tunnel.The road tunnel waterproof roofing pave-load layer composite construction of the present invention's design has good waterproof effect; three layers of water-proof system (epoxy resin scratch coat+waterproofing course+rubber asphalt topping) the comprehensive waterproof effect arranged can not only ensure that waterproofing materials and top board bonds, can reduce the waterproofing course inefficacy that the crack due to concrete roof generation causes simultaneously.Rubber asphalt topping slow down the impact of vehicular impact load on waterproofing course, avoids waterproofing course and top board structure peels off the waterproof failure caused.The present invention is a kind of effective waterproof roofing pave-load layer composite construction effectively resisting drying and watering cycle and ground level road impact load.This waterproof roofing pave-load layer composite construction has the ability of excellent water resistance and opposing impact load, greatly improves the integrity and effectiveness of road tunnel water-proof system, enhances structure durability, can meet the requirement of road tunnel waterproof roofing.
Accompanying drawing explanation
Fig. 1 is a kind of zero earthing lower roof plate waterproof construction schematic diagram.
Detailed description of the invention
Zero earthing lower roof plate waterproof pave-load layer composite construction of the present invention, top-down deck is rubber asphalt topping 1-waterproofing course 2-epoxy resin scratch coat 3-cement concrete top board 4.
Cement concrete top board 4 first flattens, and levelling course is made up of fine-grained cement concrete, and constuction joint, shrinkage joint and seam adopt sealant to process.
Epoxy resin scratch coat 3 adopts epoxy adhesive, optionally brushing one deck (about 0.5kg/m
2) or two-layer (0.9 ~ 1kg/m
2), at the quartz sand of the suitable particle diameter of inorganic agent surface spreading.
Epoxy adhesive (or epoxy resin waterproof coating) is applied more in bridge deck water-proof, and application is comparatively rare in road tunnel waterproof roofing.Epoxy adhesive adhesion stress is strong, has outstanding adhesion stress to by basal plane such as placed concrete, bituminous concrete, coiled material, polyurethane coating, polyureas, carbon cloth, the steel plate etc. glued, and the basal plane material that energy consolidation is loose; Have at the moisture substrate without open fire and well infiltrate concreteness, wet sticky intensity is higher; In addition also can short-time withstand 180 DEG C of bituminous concretes that pave.The loading characteristic of comprehensive analysis road tunnel top board and environmental factor, epoxy adhesive can play its advantage preferably, is a kind of comparatively suitable binding waterproofing material.
Waterproofing course 2 adopts the heat molten type waterproof rolls such as modified asphalt waterproof coiled material, and adopt single ply waterproofing coiled material, gross thickness is not less than 4mm; Waterproof roll should have good water resistance and ductility, high temperature resistance, has good adhesive property with rubber asphalt transition zone.
Rubber asphalt topping 1 refers to and is sprayed on road surface by rubberized asphalt binder, and gathering materials of spreading single particle size is covered subsequently, becomes binder film through rolling.Using rubber asphalt topping as the transition zone between concrete roof waterproofing course and pavement structure layer; not only there is the ability absorbing the strain energy that concrete roof crack tip place load action causes; successfully can delay crack reflection; rubber asphalt is impermeable material simultaneously; ooze under intercepting rainwater; thus play the effect of non-crimped closure surface layer and waterproof, extend the durability of underground structure.The waste tire rubber powder grain diameter adopted in rubberized asphalt binder should at 30 order ~ 60 orders, and weight ratio shared by rubber powder is 10 ~ 30%.Rubber asphalt can adopt professional production producer to produce, and meets the technical requirements of relevant specification, and matrix pitch should keep consistent with scene with the source that gathers materials.The ballast grain sizes of simple grain footpath macadam is: 4.75mm ~ 9.5mm or 9.5 ~ 13.2mm, and crushed stone spreading coverage scale is advisable with 70 ~ 90% of area coverage.The thickness of stress absorbing layer should at 1.5 ~ 2.0cm.Rubber asphalt stress absorbing layer is existing mature technology, and its detailed proportioning repeats no more, during construction according to the situation.
The sprinkling of rubber asphalt and the spreading of rubble should adopt synchronous macadam seal paver to carry out, and the temperature of rubber asphalt should control at 180 DEG C ~ 190 DEG C, carry out spreading according to the rubber asphalt designed and rubble consumption.Synchronous macadam seal paver should steadily, at the uniform velocity travel, and its operating speed is preferably 3km/h ~ 6km/h.After crushed stone spreading, reply local is overlapping, unnecessary building stones are cleared away, and local building stones are not enough, and artificial feed supplement should be carried out in region.And roll in time.After having constructed, reply rubber asphalt stress absorbing layer surface is cleaned, and removes not bonding firmly loose rubble.
Waterproof pave-load layer composite construction construction sequence provided by the invention is as follows:
(1) concrete surface plucking is removed laitance, smear epoxy adhesive, the capillary tube of closed concrete top board, micropore and micro-cracks;
(2) laying water-proof coiled material;
(3) adopt synchronous macadam seal paver to carry out the sprinkling of rubber asphalt and the spreading of rubble, after spreading, should remove unnecessary building stones in time, artificial feed supplement is carried out in not enough region, local.And roll immediately, adopt pneumatic-tired rollers to carry out compacting, two pneumatic-tired rollers operations simultaneously, number of rolling is preferably 2 ~ 3 times;
(4), after having constructed, reply rubber asphalt protective layer cleans, and cleaning is bonding firmly loose rubble not.
A kind of zero earthing lower roof plate waterproof pave-load layer composite construction of the present invention has the following advantages compared with other waterproof roofing:
(1) employing epoxy resin scratch coat effectively can improve the bonding interface state between concrete roof and waterproofing course, plays waterproof action simultaneously;
(2) adopt rubber asphalt stress absorbing layer, reduce pave-load layer tensile stress at the bottom of layer, avoid ftracture the reflection crack cracking of the upper strata making structure caused because of concrete roof, thus improve the possibility seeped water in superstructure crack;
(3) adopt rubber asphalt stress absorbing layer, reducing ground shock load affects the shear failure of waterproofing course, improve the interfacial shear slip state of waterproofing course and top board;
(4) rubber asphalt stress absorbing layer is as the topping of waterproofing course, not only can play the effect of waterproof, heat insulation, buffering load, can also provide upper structural layer operation platform, avoid the further destruction etc. of construction to waterproofing course.
Claims (9)
1. a zero earthing lower roof plate waterproof pave-load layer composite construction, is characterized in that this structure is followed successively by rubber asphalt topping, waterproofing course, epoxy resin scratch coat, cement concrete top board from top to bottom.
2. zero earthing lower roof plate waterproof pave-load layer composite construction according to claim 1, is characterized in that rubber asphalt topping adopts rubberized asphalt binder and single particle size to gather materials, through rolling the binder film of formation.
3. zero earthing lower roof plate waterproof pave-load layer composite construction according to claim 2, it is characterized in that single particle size gathers materials for the rubble of single particle size, the particle diameter of described single particle size rubble is: 4.75mm ~ 9.5mm or 9.5 ~ 13.2mm, and crushed stone spreading coverage scale is 70 ~ 90% of area coverage.
4. zero earthing lower roof plate waterproof pave-load layer composite construction according to claim 2, is characterized in that the thickness of rubber asphalt transition zone is at 1.5 ~ 2.0cm.
5. zero earthing lower roof plate waterproof pave-load layer composite construction according to claim 1, is characterized in that scratch coat adopts epoxy adhesive brushing one deck or two-layer, epoxy adhesive consumption 0.5 ~ 1kg/m
2, at epoxy adhesive surface spreading quartz sand.
6. zero earthing lower roof plate waterproof pave-load layer composite construction according to claim 1, it is characterized in that waterproofing course adopts heat molten type waterproof roll, thickness is not less than 4mm.
7. a construction method for zero earthing lower roof plate waterproof pave-load layer composite construction, is characterized in that the method comprises the following steps: A, by concrete surface plucking, smear epoxy adhesive, the capillary tube of closed concrete top board, micropore and micro-cracks; B, laying water-proof coiled material; C, carry out the sprinkling of rubberized asphalt binder and the spreading of rubble, and roll.
8. construction method as claimed in claim 7, it is characterized in that, in step D, the sprinkling of rubber asphalt and the spreading of rubble should adopt synchronous macadam seal paver to carry out, and the temperature of rubberized asphalt binder should control at 180 DEG C ~ 190 DEG C, and synchronous macadam seal paver operating speed is 3km/h ~ 6km/h.
9. construction method as claimed in claim 7, it is characterized in that, in steps A, brushing one deck epoxy adhesive, consumption is 0.45 ~ 0.55kg/m
2, or two-layer epoxy adhesive, consumption 0.9 ~ 1kg/m
2, at epoxy adhesive surface spreading quartz sand.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410463151.0A CN104264561A (en) | 2014-09-12 | 2014-09-12 | A non-earthing composite structure for a waterproof pavement layer of a top plate for a road tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410463151.0A CN104264561A (en) | 2014-09-12 | 2014-09-12 | A non-earthing composite structure for a waterproof pavement layer of a top plate for a road tunnel |
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| CN104264561A true CN104264561A (en) | 2015-01-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369747A (en) * | 2015-12-08 | 2016-03-02 | 江苏中路工程技术研究院有限公司 | Bridge deck pavement anti-crack cover and preparation method thereof |
| CN107165012A (en) * | 2017-06-15 | 2017-09-15 | 上海建工四建集团有限公司 | The road structure and its construction method of a kind of tunnel upper |
| CN109056447A (en) * | 2018-09-13 | 2018-12-21 | 中交第公路勘察设计研究院有限公司 | From ice-breaking paving layer material and its construction method |
| CN112281569A (en) * | 2020-12-08 | 2021-01-29 | 王壹帆 | Method for controlling reflection cracks of asphalt concrete overlay of cement concrete pavement |
| CN112920481A (en) * | 2021-01-27 | 2021-06-08 | 山东卓宝建筑防护工程有限公司 | Waterproof protective material and production process thereof |
| CN113235423A (en) * | 2021-04-14 | 2021-08-10 | 东南大学 | Fatigue-resistant and anti-rutting steel bridge deck pavement structure and pavement method |
| CN113322743A (en) * | 2021-06-03 | 2021-08-31 | 重庆诚邦路面材料有限公司 | Epoxy modified cement pavement anti-skid wearing layer and construction method thereof |
| WO2023060609A1 (en) * | 2021-10-16 | 2023-04-20 | 海门茂发美术图案设计有限公司 | Road pavement structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369747A (en) * | 2015-12-08 | 2016-03-02 | 江苏中路工程技术研究院有限公司 | Bridge deck pavement anti-crack cover and preparation method thereof |
| CN105369747B (en) * | 2015-12-08 | 2017-03-29 | 江苏中路工程技术研究院有限公司 | A kind of deck paving cracking resistance cover and preparation method thereof |
| CN107165012A (en) * | 2017-06-15 | 2017-09-15 | 上海建工四建集团有限公司 | The road structure and its construction method of a kind of tunnel upper |
| CN109056447A (en) * | 2018-09-13 | 2018-12-21 | 中交第公路勘察设计研究院有限公司 | From ice-breaking paving layer material and its construction method |
| CN109056447B (en) * | 2018-09-13 | 2021-05-25 | 中交第一公路勘察设计研究院有限公司 | Self-icebreaking pavement paving layer material and construction method thereof |
| CN112281569A (en) * | 2020-12-08 | 2021-01-29 | 王壹帆 | Method for controlling reflection cracks of asphalt concrete overlay of cement concrete pavement |
| CN112920481A (en) * | 2021-01-27 | 2021-06-08 | 山东卓宝建筑防护工程有限公司 | Waterproof protective material and production process thereof |
| CN113235423A (en) * | 2021-04-14 | 2021-08-10 | 东南大学 | Fatigue-resistant and anti-rutting steel bridge deck pavement structure and pavement method |
| CN113235423B (en) * | 2021-04-14 | 2022-05-13 | 东南大学 | Fatigue-resistant and anti-rutting steel bridge deck pavement structure and pavement method |
| CN113322743A (en) * | 2021-06-03 | 2021-08-31 | 重庆诚邦路面材料有限公司 | Epoxy modified cement pavement anti-skid wearing layer and construction method thereof |
| WO2023060609A1 (en) * | 2021-10-16 | 2023-04-20 | 海门茂发美术图案设计有限公司 | Road pavement structure |
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