CN214459301U - Long-life bituminous pavement structure of concrete resonance fission basic unit tunnel - Google Patents
Long-life bituminous pavement structure of concrete resonance fission basic unit tunnel Download PDFInfo
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- CN214459301U CN214459301U CN202120300506.XU CN202120300506U CN214459301U CN 214459301 U CN214459301 U CN 214459301U CN 202120300506 U CN202120300506 U CN 202120300506U CN 214459301 U CN214459301 U CN 214459301U
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Abstract
The utility model relates to a long-life bituminous pavement structure of concrete resonance fission basic unit tunnel, bituminous pavement structure includes by tunnel bedrock to the road surface flexible coupling layer, pitch surface course and the pitch surface wearing and tearing layer between rubble vibration isolation bed course, resonance fission basic unit, the layer that stacks gradually the setting. Tunnel bituminous paving structure matches for holistic flexible layer, and the connection is the flexible connection of resonance metalling between the layer. The asphalt pavement structure can cope with the influence of traffic load and climate factors, solves the problems of deformation damage and cracking damage of the tunnel asphalt pavement structure, creatively uses a newly poured concrete slab as a raw material, and is a self-adaptive integrated new structure obtained by implementing resonance fission treatment in situ, has the advantages of water prevention and drainage, noise reduction, good driving comfort and the like, is suitable for running of various traffic load vehicles in a tunnel environment, and can achieve the service life of asphalt pavements to be permanent by replacing an asphalt surface wearing layer.
Description
Technical Field
The utility model relates to a tunnel bituminous paving technical field particularly, relates to a long-life bituminous pavement structure of concrete resonance fission basic unit tunnel.
Background
The asphalt pavement structure of the tunnel of the national current standard is an asphalt composite pavement structure: 15 cm thick C20 plain concrete base layer + (24 cm thick bending tensile strength 5Mpa continuous reinforcement concrete lower surface layer + (6 cm thick medium-sized asphalt concrete + (4 cm thick modified asphalt SMA surface layer), wherein the total thickness of the asphalt pavement structure is as follows: the total volume of the beer is 15 cm +24 cm +6 cm +4 cm & lt 49 cm. The structural design concept reflects the advantage of high overall strength of a pavement structure, but has the following problems that because of the surface layer structure formed by combining a thin asphalt layer with a thick concrete rigid layer and the combined pavement structure form formed by combining the thin asphalt layer with a concrete rigid base layer structure, the difference of the elastic modulus between the layers is large, and the properties of the structural layers are not matched; and the slab joints of the concrete slabs always have the problem of eliminating reflection cracks; therefore, the asphalt layer of the pavement structure is easy to deform and crack, and the service life of the asphalt surface wearing layer is shortened, so that the service life of the tunnel asphalt pavement structure cannot be prolonged. In addition, the structure does not have a good waterproof and drainage system and a noise reduction system, and the problems of water damage of an asphalt surface layer structure and excessive driving noise are easy to occur. In conclusion, the existing tunnel asphalt pavement structure needs an optimized innovative structure to improve the service performance of the pavement and prolong the service life.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a novel, simple, economic, reasonable concrete resonance fission basic unit tunnel long-life bituminous pavement structure. The asphalt pavement structure has the advantages of water prevention and drainage, noise reduction, good driving comfort and the like, is suitable for running of various traffic load vehicles in a tunnel environment, and achieves the purposes of good service performance and long service life of the tunnel asphalt pavement in a mode of replacing an asphalt surface wearing layer.
The technical scheme of the utility model is that:
the utility model provides a long-life bituminous pavement structure of concrete resonance fission basic unit tunnel, bituminous pavement structure includes the rubble vibration isolation bed course, resonance fission basic unit, the flexible tie coat in layer, pitch surface course and the pitch surface wearing and tearing layer that stack gradually the setting by tunnel foundation to road surface. The tunnel rock foundation is an asphalt pavement rock foundation constructed according to the existing specifications. The gravel vibration isolation cushion layer is a gap-filling gravel layer built according to the existing standard, and the thickness of the gravel vibration isolation cushion layer is 8 cm. The resonance fission base layer and the interlayer flexible coupling layer are preferably made of cement concrete obtained by resonance fission of a concrete slab, the concrete slab preferably has the structural strength reaching the standard C30-C35, the structural natural frequency of the concrete slab preferably is 44-48Hz, the micro crack spacing of the cement concrete of the resonance fission base layer is within 18cm, the cement concrete macadam particle size of the interlayer flexible coupling layer is within 5cm, the total structural thickness of the resonance fission base layer and the interlayer flexible coupling layer is 28 cm, the structural thickness ratio of the resonance fission base layer to the interlayer flexible coupling layer is preferably 4:1, the asphalt surface layer is medium-grain modified asphalt concrete, the thickness of the asphalt surface layer is 8cm, the asphalt surface wearing layer is modified asphalt, and the thickness of the asphalt surface wearing layer is 5 SMA.
The non-tunnel asphalt pavement structure is arranged on various complex roadbed soils which are newly built, the tunnel asphalt pavement structure is arranged on a rock foundation, the stability of the two roadbed soils is far different, and the rock foundation has solid and unique stability, so that the long-term road performance of the asphalt pavement base layer structure in use is met, various damages of the pavement are controlled within the range of a pavement surface wearing layer, and the asphalt pavement structure and the roadbed structure are prevented from being damaged and are used for a long time as pursuing targets. The utility model discloses a structural style does: arranging a broken stone vibration isolation cushion layer on a tunnel foundation, pouring a C30-C35 concrete slab as a raw material, carrying out in-situ resonance fission treatment to obtain a new cement concrete structure and a new material of a resonance fission base layer and an interlayer flexible connecting layer, and directly paving a tunnel asphalt pavement structure of an asphalt surface layer. The utility model discloses bituminous paving's road surface structure matches for holistic flexible layer, and the connection is the flexible connection on resonance metalling between the layer to the self-adaptation structure of resonance fission treatment preparation accomplishes building of tunnel bituminous paving, and this structure has the drainage of preventing, falls the noise, advantage such as driving travelling comfort is good, is suitable for the operation of various traffic load vehicles under the tunnel environment, reaches forever with the life who changes bituminous surface wearing and tearing layer mode and reach tunnel bituminous paving.
In view of the different working methods of the resonance machines in china and the usa, according to the utility model discloses an asphalt pavement structure, the used machine of resonance fission is china's manufacturing, this is because if adopt the american resonance machine then can not accomplish the full-depth and the full width's of the used road surface concrete slab of utility model scheme one-off construction, the resonance machine of china can accomplish the full thickness and the full width's of concrete slab one-off construction. At internal, the operation of chinese resonance machine is used maintenance technique and road surface construction technique all maturely, possesses completely the utility model discloses the basic condition of scheme engineering construction can realize the utility model discloses technical scheme's high quality and low-cost popularization and operation. The inventor researches and explores from research and development of a resonance machine to engineering practice application of actual resonance crushing of old concrete pavement slabs, and the practical experience is summarized for nearly two decades, particularly the experience is summarized in the successful case that the application range is the largest and the application range is the widest in the United states and China, the scientific conception is realized, and the simplest and easiest tunnel long-life asphalt pavement structure is obtained. Because the design method and the construction technology of the long-life asphalt pavement involve a plurality of uncertain factors, the construction and the design are difficult to be unified; pavement workers in China have undergone more than 70 years of research and exploration since being liberated, and a mature long-life asphalt pavement base layer structure and an asphalt surface layer are not found to be matched for use so far, namely, the key technology of the long-life asphalt pavement is built on the base layer structure, but China still insists on that a solution adopting a semi-rigid base layer structure is not easy to break through. The utility model provides a long-life bituminous pavement structure of concrete resonance fission basic unit tunnel that brand-new whole flexible layer matches can produce positive effect for building of china's long-life bituminous pavement in tunnel.
The utility model discloses in the structure, set up rubble vibration isolation bed course, this structural layer adopts the gap filling rubble layer that current standard was built, should still spill the hot pitch above this layer, concrete material when pouring concrete slab above preventing downwards penetrates, still plays the good vibration isolation effect in hot pitch layer. The gap-filling crushed stone layer must determine all isolation and all absorption of resonance wave energy during the construction of the resonance machine, and ensure that all facilities in the tunnel are strictly not damaged; this is the decisive condition for determining whether a concrete slab can be subjected to a resonance fission process. And secondly, the function of the cushion structure is realized. The thickness of the structure using the interstitial stone layer must reach 8cm and even be increased. The internal structure of the resonance fission base layer is a concrete structure which has ordered microcracks generated by the resonance energy fission of the concrete plate, is not easy to permeate water and is obliquely embedded and locked, and has extremely strong mechanical stability and structural durability. And the resonant crushed stone layer produced by the resonant fission of the concrete plate plays the role of an interlayer flexible connecting layer. The two have good mutual adaptation and matching, and the structural integrity can be always kept; the interlayer flexible connecting layer cannot be added with any other connecting material for roads, and if the other interlayer connecting material is added, an incompatible isolating layer can be formed, so that the interlayer connecting effect is influenced; the only one which can be adapted is the resonance crushed stone layer which is processed by in-situ fission, and the ideal complete continuous connection between the resonance fission base layer and the asphalt surface layer which is directly paved can be realized, thereby achieving the best matching of the asphalt surface layer structure. Furthermore, the utility model discloses in the structure, the thickness on bituminous paving layer, bituminous surface wearing and tearing layer all increases to some extent than the thickness of current tunnel bituminous paving structure, and the reason lies in according to the structural layer nature of resonance metalling and resonance fission basic unit, must set up the bituminous surface layer structure of thickening and just can embody with it the cooperation the utility model discloses a bituminous paving structure optimizes the advantage of matching wholly, just can satisfy improvement and life's of bituminous paving performance for a long time. Therefore, adopt the utility model discloses the structure has that mechanical stability is good, and structural durability is strong, and waterproof drainage, noise reduction, advantage such as driving comfort are good are suitable for the operation of various traffic load vehicles under the tunnel environment to the mode on change pitch surface wearing and tearing layer realizes that life is to permanent. Therefore, the utility model discloses a build tunnel long-life bituminous paving and provide a most scientific, simplest, the most economic solution.
The utility model has the advantages that:
concrete resonance fission basic unit tunnel long-life bituminous pavement structure, include by tunnel foundation to the road surface flexible coupling layer, pitch surface course and pitch surface wearing and tearing layer between the rubble vibration isolation bed course, resonance fission basic unit, the layer of stacking gradually the setting. Compared with the existing tunnel asphalt pavement structure, the innovative structure has the advantages that the matching of the asphalt pavement resonance fission base layer structure and the asphalt surface layer structure is optimized, the technical problem that the existing tunnel asphalt surface layer is easy to damage due to the inadaptation of the structural layer is solved, the mechanical stability is good, the structural durability is strong, the water drainage is prevented, the noise is reduced, the driving comfort is good, and the like, the novel tunnel asphalt pavement structure is suitable for the operation of various traffic load vehicles in a tunnel environment, and the service life is prolonged to be permanent in a mode of replacing the asphalt surface wearing layer. Namely the utility model provides a more reasonable innovation structural scheme to solve the long-life problem that road surface structure used, will produce positive influence for the construction of current tunnel bituminous road certainly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic cross-sectional structural view of the asphalt pavement of the present invention;
in the figure: 1-tunnel bedrock; 2-a gravel vibration isolation cushion layer; 3-resonant fission base (resonant fission layer); 4-interlayer flexible tie layer (resonance rubble layer); 5-asphalt surface course; 6-asphalt surface wearing layer.
Detailed Description
In the present invention, all the embodiments, implementations and features of the present invention can be combined with each other without contradiction or conflict. In the utility model, conventional equipment, devices, parts, etc. can be purchased commercially or can be self-made according to the present invention. In the present invention, in order to highlight the key points of the present invention, some conventional operations and devices, apparatuses, and components are omitted or only described briefly.
As shown in fig. 1: the utility model provides a long-life bituminous pavement structure of concrete resonance fission basic unit tunnel, includes the rubble vibration isolation bed course 2, resonance fission basic unit 3, flexible tie coat 4 between layer, pitch surface course 5 and the pitch surface wearing and tearing layer 6 that stack gradually the setting by tunnel foundation 1 to road surface.
As an alternative embodiment, the tunnel bedrock 1 is a bituminous pavement bedrock built according to the current national standards.
In an alternative embodiment, the gravel vibration isolation cushion layer 2 is a gap-filling gravel layer constructed according to the current specifications, and the thickness of the gravel vibration isolation cushion layer 2 is 8 cm.
In an alternative embodiment, the resonance fission base layer 3 and the interlayer flexible connecting layer 4 are made of cement concrete obtained by resonance fission of a concrete slab. The construction method of the resonance machine comprises the following steps: the hammer head of the resonance machine for transmitting the driving force frequently strikes the surface of the concrete slab so as to transmit the driving force of a machine vibration source, and the periodic external force of the driving force transmitting hammer head acts on the surface of the slab so that the slab accumulates the resonance energy to achieve fission (the accumulated energy has a relation with parameters such as the vibration amplitude of the hammer head of the resonance machine, the width of the hammer head and the forward travelling speed of the resonance machine); two conditions of resonant fission: firstly, a hammer head transmits driving force under resonance frequency by adopting a resonance machine, so that a plate body generates resonance, namely resonates; secondly, a hammer head of a resonance machine is adopted to transmit driving force under resonance frequency, so that when resonance energy accumulation reaches a maximum threshold value, the plate body generates maximum amplitude to enable internal tissue fission of the plate body to occur, namely fission occurs; the resonance fission treatment can be completed only by simultaneously meeting the conditions of resonance, fission and the like. The maximum amplitude value during resonance fission is the amplitude value when the slab body of the concrete slab reaches resonance fission when a resonance machine is debugged on site; therefore, the working parameters of the resonance machine can be determined only when the hammer head contacts the lower part of the plate body to achieve resonance fission according to the structural conditions (mainly the plate thickness and the plate structure natural frequency) of the concrete plate on a road construction site. After the concrete solid core plate is instantaneously cracked below the hammer head contact part, the resonance is terminated because the natural frequency of the structure deviates far. When the vibration frequency of the hammer head driven by the resonance machine is close to the natural frequency of the concrete solid core plate, the driving force of the hammer head directly acts on the inner parts of the plate body for several times of molecules and atomic layers, and continuously absorbs energy, so that small-range severe displacement occurs among particles, and the hammer head is in contact with the inner tissues below the plate body to instantaneously generate 'fission', so that the power of resonance is huge in energy accumulation. The four peripheral plate bodies of the hammer head have reached a resonance fission structure, the natural frequency of the hammer head is greatly changed, the hammer head does not absorb resonance energy any more, but does not reach the resonance fission plate body part, and the hammer head is still an original solid plate body because the damping factor of the hammer head cannot reach the maximum amplitude value and does not have fission. Alternatively described: the hammer head of the resonance machine is better than a plowshare capable of transmitting resonance energy, the plowshare capable of enabling the internal tissue of the plate body to absorb energy is used for the resonance machine, the whole processing operation surface is plowed one by one in a row, and the whole concrete solid core plate is manufactured into a structure of a resonance gravel layer and a resonance cracking layer. The resonance machine transfers resonance energy in such a working mode to accumulate to fission, so that the plate body simultaneously generates two new structures, namely a resonance crushed stone layer and a resonance fission layer, which are discordant structures, and the resonance energy is utilized to process to obtain a resonance fission layer structure meeting 100 percent of qualified products.
As an alternative embodiment, the structural strength of the concrete slab reaches the standard C30-C35. This is because the structural properties of the concrete slab formed by hardening the C30-C35 concrete cast in situ on the base layer can be prepared as the raw material for the resonance fission process, or the resonance fission can be performed by using the resonance machine to generate a new structure, namely "resonance fission layer + resonance gravel layer", and the use of the long-life asphalt pavement can be realized only by the functions and effects of the two new structures, so that the C30-C35 concrete slab cannot be selected with reduced standards in terms of strength and thickness.
In an alternative embodiment, the natural frequency of the concrete slab is 44-48 Hz. Because the natural frequency of the structure under the tunnel is far from the natural frequency of the concrete slab, the resonant frequency is in the range of 44-48Hz for resonant fission construction during resonant fission treatment construction, the resonant frequency cannot cause resonant damage to other structures, and the scheme is also specially provided with an isolation layer to prevent downward propagation of the vibration wave, so that damage to all buildings in the tunnel can be avoided, and the rigid condition which is specially designed and should be met. The concrete slab selected in the example is a solid core slab of C30-C35 concrete freshly poured on the base layer level as a raw material preparation. The natural frequency of the concrete slab basically ensures equal everywhere, and the inside of the solid core slab can ensure that the energy accumulation under the resonance frequency reaches the effect of resonance fission treatment, so that the structure of a resonance fission layer and a resonance gravel layer can be realized by the overall area and the full thickness of the concrete slab.
In an alternative embodiment, the distance between the cement concrete microcracks of the resonance fission base layer 3 is not more than 18cm, and the cement concrete grain diameter of the interlayer flexible connecting layer 4 is not more than 5 cm.
In an alternative embodiment, the total structural thickness of the resonant fission base layer 3 and the interlayer flexible tie layer 4 is 28 cm. 1. When the structure thickness is 28 cm, the structural strength and the performance of the resonance fission layer can be directly used as a resonance fission base layer, the homogeneous structure of the homogeneous structural material and the oblique interlocking has linear elasticity, and has extremely strong bearing capacity and load diffusion capacity, the structure organization can not generate a stress concentration phenomenon, and the structure can not be damaged due to traffic load stress and climate temperature change stress. The resonance cracking layer also has the function of a water impermeable layer, and the characteristic blocks the water damage caused by the mutual water cross-flow between the upper and lower structural layers; 2. the resonance gravel layer has the following functional functions as an interlayer flexible connecting layer: buffering vibration reduction, absorbing and releasing moisture, absorbing and isolating vibration wave energy coupled with a vehicle and a road, reducing road noise and the like; and can be combined with the directly paved hot asphalt mixture into a whole by embedding, extruding, locking and combining, so that the interlayer combination can reach an ideal and completely continuous state. 3. The asphalt surface layer, the interlayer flexible connecting layer with the structural thickness and the resonance fission base layer can be completely compatible and matched, so that the asphalt surface layer directly paved on the road surface is not easy to deform and does not have structural damage such as reflection cracks, fatigue cracks and the like; various damages of the asphalt pavement are controlled in the wearing layer from top to bottom on the asphalt surface layer, and the damages of the surface wearing layer can be recovered to be normally used only by preventive maintenance and replacement of the surface wearing layer by milling.
In an alternative embodiment, the ratio of the structural thicknesses of the resonant fission base layer 3 and the interlayer flexible tie layer 4 is 4: 1.
As an alternative embodiment, the asphalt surface layer is medium-sized modified asphalt concrete, and the thickness of the asphalt surface layer is 8 cm.
In an alternative embodiment, the asphalt surface wearing layer is modified asphalt SMA, and the thickness of the asphalt surface wearing layer is 5 cm.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a long-life bituminous pavement structure of concrete resonance fission basic unit tunnel which characterized in that, bituminous pavement structure includes the rubble vibration isolation bedding course, resonance fission basic unit, the flexible tie coat between layer, pitch surface course and the pitch surface wearing and tearing layer that stack gradually the setting by tunnel bedrock to road surface.
2. The long-life asphalt pavement structure of the concrete resonance fission base tunnel according to claim 1, wherein the crushed stone vibration isolation cushion layer is a gap-filling crushed stone layer built according to the current specifications, and the thickness of the crushed stone vibration isolation cushion layer is 8 cm.
3. The long-life asphalt pavement structure of the concrete resonance fission base layer tunnel according to claim 1, wherein the material of the resonance fission base layer and the interlayer flexible connecting layer is cement concrete obtained by resonance fission of a concrete slab.
4. The concrete resonance fission base tunnel long-life asphalt pavement structure according to claim 3, wherein the structural strength of the concrete slab reaches C30-C35 standard.
5. The concrete resonance fission base tunnel long-life asphalt pavement structure according to claim 3, wherein the natural frequency of the concrete slab is 44-48 Hz.
6. The long-life asphalt pavement structure of the concrete resonance fission base layer tunnel according to claim 3, wherein the cement concrete microcrack spacing of the resonance fission base layer is within 18cm, and the cement concrete crushed stone particle size of the interlayer flexible connecting layer is within 5 cm.
7. The concrete resonance fission base tunnel long-life asphalt pavement structure as claimed in any one of claims 1 to 6, wherein the total structural thickness of the resonance fission base and the interlayer flexible coupling layer is 28 cm.
8. The concrete resonance fission base layer tunnel long-life asphalt pavement structure according to claim 7, wherein the ratio of the structure thickness of the resonance fission base layer to the structure thickness of the interlayer flexible connecting layer is 4: 1.
9. The long-life asphalt pavement structure of the concrete resonance fission base layer tunnel according to claim 1, wherein the asphalt surface layer is medium-grain modified asphalt concrete, and the thickness of the asphalt surface layer is 8 cm.
10. The long-life asphalt pavement structure of the concrete resonance fission base layer tunnel according to claim 1, wherein the asphalt surface wearing layer is modified asphalt SMA, and the thickness of the asphalt surface wearing layer is 5 cm.
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| CN202120300506.XU CN214459301U (en) | 2021-02-02 | 2021-02-02 | Long-life bituminous pavement structure of concrete resonance fission basic unit tunnel |
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| CN202120300506.XU CN214459301U (en) | 2021-02-02 | 2021-02-02 | Long-life bituminous pavement structure of concrete resonance fission basic unit tunnel |
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Effective date of registration: 20220322 Address after: 610000 1st floor, No. 17, South Section 3, 2nd Ring Road, Chengdu hi tech Zone, Chengdu, Sichuan Patentee after: Sichuan resonance Road Engineering Co.,Ltd. Address before: No.3, unit 5, building 2, No.6 huapaifang street, Jinniu District, Chengdu, Sichuan 610000 Patentee before: Wang Bangguo |