Oblique highway circular pipe culvert section
By setting up a pipe section body between two adjacent circular pipe culverts of the oblique highway, and setting stressed steel bars and welded joints in the gap, the problems of unstable and prone to rupture in the prior art are solved, and a stable and reliable pipe section structure and good load-bearing capacity are achieved.
Patent Information
- Application Number
- CN202421212665.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-05-30
AI Technical Summary
During the construction process, it is difficult to form pipe sections with stable and reliable structures and clear stresses. They are prone to rupture when facing vehicle loads, self-weight of the circular pipe culvert and equivalent loads generated by the filling, resulting in interruption of communication.
A diagonal highway circular pipe culvert pipe section is designed. By setting a pipe section body between two adjacent circular pipe culverts, the pipe section body is composed of an outer ring body and an inner ring body to form a pipe wall gap, and an inner layer of stressed steel bar and outer layer of stressed steel bar are provided in the gap. Welded joints are provided at both ends. The joints are bonded to the surface of the circular pipe culvert and filled with asphalt floc.
Through this design, stable and solid pipe joints are formed, with good support and load-bearing capacity under extreme conditions, avoiding the risk of pipe joints and ensuring the connectivity of the circular pipe culvert.
Smart Images
Figure CN222744834U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a pipe section, in particular to an oblique highway circular pipe culvert pipe section, belonging to the technical field of road construction. Background Art
[0002] In the existing technology, the design and construction time of the circular culvert accounts for a large proportion of the total culvert design and construction time, usually up to about 40%; especially for the pipe sections of the oblique highway circular culvert, it is difficult to form a stable and reliable structure with clear force during the construction process, so it is easy to break when facing the equivalent load generated by vehicle load, circular culvert deadweight and fill; due to the rupture of the pipe section, the connection between the front and rear circular culverts is interrupted. Therefore, further improvement is needed. Utility Model Content
[0003] The utility model aims to solve the above-mentioned shortcomings and provide a skew highway circular pipe culvert pipe section with clear force, stable and reliable, and simple and reasonable structure.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A pipe segment of an oblique highway circular culvert comprises a pipe segment body arranged between two adjacent circular culverts, wherein the pipe segment body comprises an outer ring body and an inner ring body; the outer ring body and the inner ring body form a pipe wall gap; an inner layer of stressed steel bars and an outer layer of stressed steel bars are arranged in the pipe wall gap; joints are arranged at both ends of the outer layer of stressed steel bars.
[0006] Furthermore, the inner layer of stressed steel bars forms a spiral inner ring of main bars; the inner ring of main bars is arranged on the tube wall of the inner ring body; the outer layer of stressed steel bars forms a spiral outer ring of main bars; the outer ring of main bars is arranged on the tube wall of the outer ring body.
[0007] Furthermore, the number of circles of the main rib inner circle and the main rib outer circle is 8, 16 or 32; the diameter of the main rib inner circle is 107-110CM; the diameter of the main rib outer circle is 120-123CM.
[0008] Furthermore, the joint is flush with the axial direction of the outer ring of the main reinforcement; and the joint extends in two opposite directions of the outer ring of the main reinforcement.
[0009] Furthermore, the joint is overlapped at the outer layer of stress-bearing steel bars at the beginning and end of the outer ring of the main reinforcement; and the joint is a welded joint.
[0010] Furthermore, the joint is attached to the surface of the circular culvert.
[0011] Furthermore, asphalt hemp is filled between the joint and the circular culvert.
[0012] The beneficial effects of the utility model are as follows: by arranging a pipe segment body between two adjacent circular culverts, and obliquely arranging inner layer stress-bearing steel bars and outer layer stress-bearing steel bars in the pipe segment body to form an outer ring body and an inner ring body, a stable and firm pipe segment can be formed between the two adjacent circular culverts, which has good support and bearing capacity under limit conditions; at the same time, a joint is formed between the inner layer stress-bearing steel bars and the outer layer stress-bearing steel bars on the outside of the pipe segment body, and a connection can be formed between the pipe segment body and the circular culvert through the joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.
[0014] Figure 2 It is a schematic diagram of the longitudinal section structure of the utility model.
[0015] Figure 3 It is a schematic diagram of the longitudinal section structure of the inner circle of the main reinforcement or the inner circle of the main reinforcement.
[0016] Figure 4 It is a schematic diagram of the connection structure between the pipe segment body and the circular culvert.
[0017] In the figure: 1 is the outer ring, 2 is the inner ring, 3 is the inner layer stress-bearing steel bars, 4 is the outer layer stress-bearing steel bars, and 5 is the joint. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] The terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art, unless the terms are defined differently. It should be understood that the terms defined in commonly used dictionaries have the same meaning as those in the prior art.
[0020] See also Figure 1-Figure 4
[0021] A pipe segment of an oblique highway circular culvert comprises a pipe segment body arranged between two adjacent circular culverts, wherein the pipe segment body comprises an outer ring body 1 and an inner ring body 2; the outer ring body 1 and the inner ring body 2 form a pipe wall gap; an inner layer stress-bearing steel bar 3 and an outer layer stress-bearing steel bar 4 are arranged in the pipe wall gap; joints 5 are arranged at both ends of the outer layer stress-bearing steel bar.
[0022] The specific design parameters are as follows: (1) Concrete: gravity density γ = 26 kN / , C40 concrete elastic modulus E = 3.25 × MPa.
[0023] (2) Asphalt concrete: gravity density γ = 24.0 kN / .
[0024] (3) The design values of concrete and steel bar strength shall be adopted in accordance with the "Design Specification for Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts" (JTG 3362-2018).
[0025] (4) The weight of the fill column is calculated based on the dead load on the culvert top. The vertical pressure on the culvert should be multiplied by the vertical pressure intensity coefficient K. The K value should be selected according to the "JTGT3365-2-2020 Highway Culvert Design Specifications". Considering the particularity of roadbed filling materials in Xinjiang, the fill gravity density is taken as 21KN / m3 on the safe side, and the fill internal friction angle is 35°. The live load calculation is based on a 30° diffusion distribution, and the live load impact effect is not taken into account.
[0026] Furthermore, the inner layer stress-bearing steel bars 3 form a spiral main reinforcement inner ring; the main reinforcement inner ring is arranged on the tube wall of the inner ring body 2; the outer layer stress-bearing steel bars 4 form a spiral main reinforcement outer ring; the main reinforcement outer ring is arranged on the tube wall of the outer ring body 1.
[0027] Furthermore, the arrangement directions of the inner layer stress-bearing steel bars 3 and the outer layer stress-bearing steel bars 4 are relatively inclined with respect to the axial directions of the outer ring body and the inner ring body.
[0028] Furthermore, the number of circles of the main rib inner circle and the main rib outer circle is 8, 16 or 32; the diameter of the main rib inner circle is 107-110CM; the diameter of the main rib outer circle is 120-123CM.
[0029] The circular culvert only considers the combination of vehicle load, culvert deadweight and equivalent load generated by fill, without considering the annular pressure and radial shear force of the pipe wall, and only considers the effect of bending moment. According to the "Highway Reinforced Concrete and Prestressed Concrete Bridge and Culvert Design Code" (JTG 3362-2018), the bearing capacity (strength) of the concrete circular culvert structure under the ultimate bearing capacity state and the crack width under the normal use limit state are verified. The inner and outer layers of the pipe wall are calculated and configured according to the single-reinforcement section concrete.
[0030] Specifically, the parameters of the three types of steel bars (inner layer stress-bearing steel bars 3 and outer layer stress-bearing steel bars 4) that can be used in this embodiment are as follows:
[0031]
[0032] The relevant parameters of the main reinforcement outer circle and the main reinforcement inner circle formed by one of the above three types of steel bars are as follows: n is the number of spiral turns of the main reinforcement outer circle and the main reinforcement inner circle; d1 is the diameter of the main reinforcement inner circle; d2 is the diameter of the main reinforcement outer circle.
[0033] By adopting the above method, suitable steel bars are selected as the inner layer stress steel bars 3 and the outer layer stress steel bars 4, and the outer ring of the main reinforcement and the inner ring of the main reinforcement are formed, and the circular culvert is uniformly checked, which saves the time of verification and reduces the error rate. The engineering quantity calculation is programmed to avoid time and labor consumption.
[0034] Furthermore, the joint 5 is flush with the axial direction of the outer ring of the main reinforcement; the joint 5 extends in two opposite directions of the outer ring of the main reinforcement.
[0035] Furthermore, the joint 5 is overlapped at the outer layer of stress-bearing steel bars at the beginning and the end of the outer ring of the main reinforcement; the joint is a welded joint.
[0036] Furthermore, the joint 5 is attached to the surface of the circular culvert.
[0037] Furthermore, asphalt hemp is filled between the joint 5 and the circular culvert.
[0038] Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the utility model rather than limiting it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A pipe segment for an oblique highway circular culvert, comprising a pipe segment body arranged between two adjacent circular culverts, characterized in that: The pipe segment body comprises an outer ring body and an inner ring body; the outer ring body and the inner ring body form a pipe wall gap; the inner layer stress-bearing steel bars and the outer layer stress-bearing steel bars are arranged in the pipe wall gap; joints are arranged at both ends of the outer layer stress-bearing steel bars; The inner layer of stressed steel bars forms a spiral main reinforcement inner ring; the main reinforcement inner ring is arranged on the tube wall of the inner ring body; the outer layer of stressed steel bars forms a spiral main reinforcement outer ring; the main reinforcement outer ring is arranged on the tube wall of the outer ring body; The arrangement direction of the inner layer stress-bearing steel bars and the outer layer stress-bearing steel bars is relatively inclined with respect to the axis direction of the outer ring body and the inner ring body; The joint is flush with the axis direction of the outer ring of the main reinforcement; the joint extends in two opposite directions of the outer ring of the main reinforcement; The joint is overlapped at the outer layer of stress-bearing steel bars at the beginning and end of the outer ring of the main reinforcement; the joint is a welded joint; The joint is fitted on the surface of the circular culvert.
2. The oblique highway circular culvert section according to claim 1 is characterized by: The number of circles of the main rib inner circle and the main rib outer circle is 8, 16 or 32; the diameter of the main rib inner circle is 107-110CM; the diameter of the main rib outer circle is 120-123CM.
3. The oblique highway circular culvert section according to claim 2 is characterized by: The space between the joint and the circular pipe culvert is filled with asphalt hemp.