High-performance concrete combined trestle
Through the high-performance concrete combined trest structure, ultra-high-performance concrete and I-beams are used to simplify the construction process, reduce the structure's own weight, and improve durability. The problems of difficult and self-weight construction of traditional trests are solved, and efficient and lightweight trest construction is achieved.
Patent Information
- Application Number
- CN202422040445.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The traditional trestle structure is bulky, has high construction difficulty, low load capacity, and the ordinary concrete bridge deck is heavy, has a long maintenance cycle, poor recyclability, and has complicated construction processes.
It adopts a high-performance concrete composite structure, including columns, I-beams and ultra-high-performance concrete, combining high-strength aggregate layer and polyurethane mortar wear-resistant layer, simplifies the construction process, reduces the reinforcement process, and utilizes the high-strength and toughness characteristics of ultra-high-performance concrete to reduce the structure's own weight and improve durability.
With the same bearing capacity, significantly reduce construction time, reduce resource use, simplify construction processes, improve structural durability, and reduce inspection and maintenance costs. The structure's own weight is only 1/2~1/3 of ordinary reinforced concrete.
Smart Images
Figure CN223033821U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of trestles, in particular to a high-performance concrete combined trestle. Background Technique
[0002] The structure of the traditional trestle is heavy, and the construction difficulty increases continuously with the increase of the span, and the bearing capacity is relatively low; moreover, the ordinary concrete bridge deck has obvious disadvantages such as large self-weight, long maintenance period, poor recyclability, etc., and needs to be reinforced with bars, with many construction procedures and a complicated process. Content of the Utility Model
[0003] The purpose of the utility model is to provide a high-performance concrete combined trestle, which has a process flow that does not require bar planting, greatly reduces the construction time used under the condition of the same bearing capacity, simplifies the construction process, and reduces the use of resources.
[0004] To achieve the above purpose, the utility model provides the following technical solution: a high-performance concrete combined trestle, including columns, an I-beam cross beam is erected on the top of the columns, an I-beam longitudinal beam is erected on the top of the I-beam cross beam, ultra-high performance concrete is laid on the top of the I-beam longitudinal beam, a high-strength aggregate layer is laid on the top of the ultra-high performance concrete, a leveling layer is laid on the top of the high-strength aggregate layer, and a polyurethane mortar wear-resistant layer is laid on the top of the leveling layer.
[0005] As a preferred scheme, railings are fixedly installed on both sides of the top of the polyurethane mortar wear-resistant layer.
[0006] As a preferred scheme, the ultra-high performance concrete, the high-strength aggregate layer, the leveling layer and the polyurethane mortar wear-resistant layer form a bridge deck.
[0007] As a preferred scheme, the ultra-high performance concrete is UHPC, and the thickness of the ultra-high performance concrete is greater than the thickness of the high-strength aggregate layer.
[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0009] 1. The ultra-high performance concrete used in the utility model has ultra-high compressive strength, tensile ductility and toughness requirements. Steel fibers are usually added to the mixture to meet certain special requirements. Under the condition of the same bearing capacity, the weight of the UHPC structure is about 1 / 2 to 1 / 3 of that of the ordinary reinforced concrete structure, which can greatly reduce the self-weight of the structure. At the same time, UHPC has very significant effects on resisting freeze-thaw cycles, wet-dry cycles, permeability, salt corrosion and carbonation. Applying UHPC materials to structural engineering can greatly improve the durability of the structure, extend the service life of the structure, and reduce the later detection and maintenance costs. Description of the Drawings
[0010] Figure 1 This is a schematic structural diagram of the present utility model.
[0011] In the figure: 1, column; 2, I-beam cross beam; 3, I-beam longitudinal beam; 4, ultra-high performance concrete; 5, high-strength aggregate layer; 6, leveling layer; 7, polyurethane mortar wear-resistant layer; 8, railing. Specific embodiments
[0012] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0013] Please refer to Figure 1 , the present utility model: a high-performance concrete combined trestle, including a column 1, an I-beam cross beam 2 is erected on the top of the column 1, an I-beam longitudinal beam 3 is erected on the top of the I-beam cross beam 2, an ultra-high performance concrete 4 is laid on the top of the I-beam longitudinal beam 3, a high-strength aggregate layer 5 is laid on the top of the ultra-high performance concrete 4, a leveling layer 6 is laid on the top of the high-strength aggregate layer 5, and a polyurethane mortar wear-resistant layer 7 is laid on the top of the leveling layer 6.
[0014] Through the above technical solution, the used ultra-high performance concrete 4 has ultra-high compressive strength, tensile ductility and toughness requirements. Steel fibers are usually added to the mixture to meet certain special requirements. Under the condition of the same bearing capacity, the weight of the UHPC structure is about 1 / 2 to 1 / 3 of that of the ordinary reinforced concrete structure, which can greatly reduce the self-weight of the structure. At the same time, UHPC has very significant effects on resisting freeze-thaw cycles, wet-dry cycles, permeability, salt corrosion and carbonation. Applying UHPC materials to structural engineering can greatly improve the durability of the structure, extend the service life of the structure, and reduce the later detection and maintenance costs.
[0015] Railings 8 are fixedly installed on both sides of the top of the polyurethane mortar wear-resistant layer 7.
[0016] Through the above technical solution, the railing 8 can block the side of the top of the combined trestle and increase the overall protection above.
[0017] The ultra-high performance concrete 4, the high-strength aggregate layer 5, the leveling layer 6 and the polyurethane mortar wear-resistant layer 7 form the bridge deck.
[0018] Through the above technical solution, the column 1 is built on the basis of the pile foundation, which serves as the bearing capacity foundation for the structure and the bridge deck. The I-beam cross beam 2 is placed on the column 1, and the I-beam longitudinal beam 3 is placed on the cross beam to disperse the load and extend it to the bridge deck.
[0019] The ultra-high performance concrete 4 is UHPC, and the thickness of the ultra-high performance concrete 4 is greater than the thickness of the high-strength aggregate layer 5.
[0020] Through the above technical solution, UHPC has the advantages of high strength, strong impermeability, high strength, wear resistance, etc. Using it as the bridge deck foundation can increase the bearing capacity and corrosion resistance of the bridge deck; while the high-strength aggregate layer 5 further increases the bearing capacity of the bridge deck.
[0021] The working principle of the present utility model is: the column 1 is built on the basis of the pile foundation, which serves as the bearing capacity foundation for the structure and the bridge deck. The I-beam cross beam 2 is placed on the column 1, and the I-beam longitudinal beam 3 is placed on the cross beam to disperse the load and extend it to the bridge deck. The UHPC is laid on the bottom layer of the bridge deck. UHPC has the advantages of high strength, strong impermeability, high strength, wear resistance, etc. Using it as the bridge deck foundation can increase the bearing capacity and corrosion resistance of the bridge deck; then the high-strength aggregate layer 5 is laid to further increase the bearing capacity of the bridge deck; finally, the polyurethane mortar wear-resistant layer 7 is laid, which can greatly improve the wear resistance of the bridge deck, simplify and unify the force of the bridge deck by the objects on the bridge deck, and improve the bearing capacity of the bridge body;
[0022] The model and size of the I-beam steel need to be prefabricated in the factory and then hoisted on site;
[0023] The ultra-high performance concrete 4 and the high-strength aggregate layer 5 of the bridge deck are prefabricated and preformed in the factory at the same time, and then naturally cured; after reaching the strength, they are transported to the site for hoisting, and then the leveling layer 6 is paved to connect the bridge deck into a whole; finally, the polyurethane mortar wear-resistant layer 7 is laid, and the bridge deck paving is completed.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.
Claims
1. A high performance concrete composite trestle, comprising a column (1), characterized in that: An I-beam cross beam (2) is mounted on the top of the column (1), an I-beam longitudinal beam (3) is mounted on the top of the I-beam cross beam (2), an ultra-high performance concrete (4) is laid on the top of the I-beam longitudinal beam (3), a high-strength aggregate layer (5) is laid on the top of the ultra-high performance concrete (4), a leveling layer (6) is laid on the top of the high-strength aggregate layer (5), and a polyurethane mortar wear-resistant layer (7) is laid on the top of the leveling layer (6).
2. The high performance concrete combined trestle according to claim 1, characterized in that: Railings (8) are fixedly mounted on both sides of the top of the polyurethane mortar wear-resistant layer (7).
3. The high performance concrete combined trestle according to claim 1, characterized in that: The ultra-high performance concrete (4), the high-strength aggregate layer (5), the leveling layer (6) and the polyurethane mortar wear-resistant layer (7) form a bridge deck.
4. The high performance concrete combined trestle according to claim 1, characterized in that: The ultra-high performance concrete (4) is UHPC, and the thickness of the ultra-high performance concrete (4) is greater than the thickness of the high-strength aggregate layer (5).