CN-121989350-A - Steel structure bridge deck asphalt concrete integrated intelligent paving method and system

Abstract

The invention discloses an integrated intelligent pavement method and system for asphalt concrete of a steel structure bridge deck slab, and belongs to the technical field of bridge engineering equipment. The system comprises an asphalt mixing unit, a metering feeding unit, an inclination angle self-adaptive paving unit, an up-down opposite compacting unit, an intelligent pre-judging floating supporting unit, an automatic marking unit and an abutment traveling wheel linkage conveying unit which are sequentially arranged along the conveying direction of the abutment. The invention applies pressure to the rollers actively and bidirectionally from top to bottom, forms a stable support by matching with the self rigid bearing of the steel bridge deck, can apply compaction pressure far higher than that of the traditional road pavement, is not limited by the bearing capacity of the road pavement, ensures that the asphalt mixture reaches an ultra-high compact state and is extruded into the preset internal expansion type anchoring cavity of the steel bridge deck to form mechanical interlocking, and simultaneously realizes the waterproof and seepage-proof effects far exceeding the traditional concrete bridge deck by utilizing the characteristics of hydrophobicity, self-expansion and micro-damage self-repairing of the asphalt material.

Inventors

• CHEN HONGYIN
• CHEN QINGLIAN
• CHEN HONGZHEN

Assignees

• 新疆顺安众达交通技术服务有限公司

Dates

Publication Date

20260508

Application Date

20260228

Claims (6)

1. 1. The integrated intelligent pavement assembly line for the asphalt concrete of the steel structure bridge deck slab is characterized by comprising a factory built-in asphalt mixing unit (①) for realizing on-site closed mixing of asphalt mixtures, a metering and feeding unit (②) for accurately controlling material supply flow, an inclination angle self-adaptive pavement unit (③) for adaptively adjusting pavement thickness according to the longitudinal and transverse gradient of the bridge deck slab, an up-down opposite compaction unit (④) comprising an upper pavement pressing system and a lower intelligent pre-judging floating support system (⑤), an automatic marking unit (⑥) and a bridge deck slab traveling wheel linkage conveying unit (⑦) for carrying automatic traveling of the steel bridge deck slab, wherein the factory built-in asphalt mixing unit is sequentially arranged along the conveying direction of the bridge deck slab.
2. 2. The assembly line of claim 1, wherein the upper and lower opposite compacting units adopt a bidirectional opposite compacting structure with an upper part pressing downwards and a lower part pushing upwards, the compacting pressure is formed by actively pressing upper and lower rollers together with rigid bearing of the steel bridge deck, the compacting pressure can be applied to be far higher than that of the traditional road pavement, and no risk of road base damage exists.
3. 3. The assembly line of claim 1, wherein the steel bridge deck surface is pre-provided with hot-rolled integrally-formed internal expansion anchoring cavities, and the compacted asphalt mixture is extruded into the anchoring cavities to form a mechanical interlocking structure, so that the interlayer bonding strength and the overall waterproof performance are improved.
4. 4. The assembly line of claim 1, wherein the lower intelligent pre-determination floating support system adopts an elastic and hydraulic constant force floating structure, and is matched with a pre-scanning recognition unit to dynamically adapt to plate surface fluctuation and realize self-adaptive pressure adjustment.
5. 5. A steel bridge deck slab asphalt concrete integrated intelligent paving method is characterized by comprising the following steps of 1 enabling a steel bridge deck slab with an inward expansion anchoring cavity to enter an operation system through a running wheel along a production line, 2 enabling asphalt mixture to finish mixing in a factory and directly feed, keeping a material state stable, 3 enabling self-adaptive paving to be carried out according to longitudinal and transverse gradients of the bridge deck slab, achieving full-width uniform paving, 4 enabling an upper spreading and pressing system to press downwards and a lower supporting system to push upwards to form bidirectional opposite compaction, enabling the asphalt mixture to achieve a compact state almost without gaps, 5 enabling the asphalt mixture to achieve automatic repair of micro-damage of a paving layer by utilizing self-expansion and self-repair characteristics of asphalt materials, 6 enabling the bridge deck sign to finish spraying through an automatic marking unit, and 7 enabling a finished bridge deck slab to automatically go out of the production line and directly have hoisting and erection conditions.
6. 6. The method of claim 5, wherein the compaction process uses upper and lower rollers to actively apply pressure in both directions, the pressure being rigidly supported by the steel deck to provide stable support, overcoming the conventional roadbed constraint limitations.

Description

Steel structure bridge deck asphalt concrete integrated intelligent paving method and system Technical Field The invention relates to the technical field of bridge engineering equipment, in particular to an intelligent pavement system and method for steel structure bridge deck asphalt concrete integration suitable for factory prefabrication production. Background The traditional steel structure bridge pavement mostly adopts a site construction mode, and has the problems of great environmental influence, uncontrollable construction period, great quality fluctuation and the like. The traditional asphalt field pavement is limited by the bearing capacity of the roadbed, the compaction strength cannot be further improved, the defects of extremely compact compaction, easy occurrence of gaps, water seepage, delamination and the like are difficult to realize, and the use requirements of long service life and high reliability of a high-grade bridge cannot be met. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides an all-weather, high-precision, high-compactness and high-durability steel structure bridge deck industrialized paving scheme, so that integrated continuous forming and ultra-long service life are realized. The invention has the following innovation points that 1. The whole-process factory integration integrates mixing, feeding, paving, compacting and marking into a continuous production line, thus realizing sealing and standardization, being not influenced by weather and seasons, and greatly improving the construction efficiency and quality stability. 2. And the double guarantee of vertical bidirectional opposite pressing and rigid bearing is realized. The traditional road pavement is limited by the bearing of the flexible roadbed, and cannot be compacted by adopting high strength, the invention adopts a bidirectional opposite-pressing structure with the upper roller pressing downwards and the lower roller pushing upwards, and the bidirectional opposite-pressing structure is matched with the rigid integral bearing of the steel bridge deck to form a stable supporting system, so that the compaction pressure far higher than that of the traditional road can be applied, the risk of structural damage is avoided, and the asphalt mixture reaches an ultra-high compact state. 3. The mechanical interlocking structure strengthens the binding force steel bridge deck plate to preset an inward expansion type anchoring cavity, asphalt is fully extruded into the cavity under high pressure to form firm mechanical interlocking, and the interlayer separation and water seepage problems are thoroughly solved. 4. Asphalt material self-repairing advantage. The compacted asphalt pavement layer has the characteristics of self-expansion and micro-damage self-repair, can automatically fill micro cracks in the use process, keeps structural integrity and waterproof performance for a long time, and is intrinsically superior to the brittle and easy-to-damage characteristics of concrete from the material. The concrete implementation process of the invention is shown in the accompanying figure 1, wherein 1, a steel bridge deck with an internal expansion type anchoring cavity enters a production line through a traveling wheel linkage conveying unit. 2. The asphalt mixture is mixed by a mixing unit arranged in a factory and is directly conveyed to a metering and feeding unit, so that the stability of the material state is ensured. 3. The inclination angle self-adaptive paving unit automatically adjusts according to the gradient of the bridge deck, so that uniform paving is realized. 4. The asphalt mixture enters an up-down opposite compacting unit, an upper spreading and pressing system applies downward pressure, and a lower intelligent pre-judging floating supporting system pushes upward to form stable bidirectional opposite pressing, so that the asphalt mixture reaches an ultra-high compacting state and is fully embedded into an anchoring cavity. 5. The paving layer finishes self-expansion and micro-damage repair by means of the characteristics of asphalt materials. 6. The automatic marking unit completes marking spraying according to a preset program. 7. The finished bridge deck automatically leaves the production line and can be directly transported, hoisted and erected. The concrete bridge deck has the beneficial effects that 1. The concrete bridge deck is excellent in waterproof performance, high in compactness, free of permeation channels and obviously superior to the traditional concrete bridge deck in effect. 2. The structure of the vertical bidirectional opposite pressure and mechanical interlocking is firm in interlayer combination and is not easy to delaminate and crack. 3. The asphalt has self-expansion and self-repairing capabilities and has stronger long-term use stability. 4. The industrial production line has the advantages of controllable construction period, high efficiency an