CN210737396U - Steel strand wires arrangement structure for box culvert - Google Patents
Steel strand wires arrangement structure for box culvert Download PDFInfo
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- CN210737396U CN210737396U CN201921025286.3U CN201921025286U CN210737396U CN 210737396 U CN210737396 U CN 210737396U CN 201921025286 U CN201921025286 U CN 201921025286U CN 210737396 U CN210737396 U CN 210737396U
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Abstract
The utility model relates to a box culvert technical field among the hydraulic engineering specifically indicates a steel strand wires arrangement structure for box culvert. The box culvert concrete structure comprises a box culvert concrete structure body, the section of which is formed by a porous box structure, first prestressed tendons which are vertically arranged are arranged in a side wall of the box culvert, second prestressed tendons which are vertically arranged are arranged in a middle partition wall, at least one group of prestressed structures are arranged in a top plate and a bottom plate of the box culvert, and each group of prestressed structures comprises two third prestressed tendons; the third prestressed tendons are steel strands which are arranged in a wave shape along the transverse direction, and two third prestressed tendons in the same group are arranged in a staggered mode; the first prestressed tendons and the second prestressed tendons are arranged in a staggered mode with the third prestressed tendons in the top plate and the bottom plate. The utility model discloses simple structure, the atress is balanced, under the loading effect, the unfavorable tensile stress that its produced can be offset to this structure, avoids making it produce under the exogenic action and warp and impaired, and the whole stress of structure is contained to the reinforcing box extends its life.
Description
Technical Field
The utility model relates to a box culvert technical field among the hydraulic engineering specifically indicates a steel strand wires arrangement structure for box culvert.
Background
The box culvert structure mostly adopts a common reinforced concrete box structure or a round steel pipe, and has shallow embedding depth and small aperture size; deeply buried large-scale box culvert generally adopts prestressing force box-shaped structure to guarantee that overall structure's stress state meets the requirements, arrange the steel strand wires according to the linear type usually to the box culvert structure, current arrangement structure can't make its atress even, under the load effect, can not offset the unfavorable tensile stress of its production, can't avoid making it produce under the exogenic action warp and impaired, can't strengthen the overall stress of box culvert structure, can't extend its life.
Like the chinese utility model patent of "porous inverted siphon steel strand wires arrangement structure" of the name of patent number "CN 208251025U", this patent has introduced a steel strand wires arrangement structure for inverted siphon, including the inverted siphon concrete structure body that the section comprises porous box, the prestressing tendons who wears to establish respectively on the roof of inverted siphon concrete structure body and bottom plate are arranged with crossing the water section central line axisymmetric curve, form positive and negative multistage circular arc curve muscle. The structure can improve the overall stress state of the inverted siphon structure, the arrangement of the prestressed ribs is more in accordance with the stress characteristics of the box-shaped inverted siphon structure, and the tensile stress which is unfavorable for the operation of the structure cannot be generated under the action of external load; meanwhile, the load capacity of the inverted siphon structure can be increased, the section size of the box-shaped inverted siphon structure is reduced, and the total investment of construction engineering is reduced. However, in the structure, only one steel strand is arranged on the inverted siphon top plate and the inverted siphon bottom plate, the steel strands are arranged in a curve wave manner, the single curve wave structure easily causes uneven stress on the top plate and the bottom plate, and the bottom plate and the top plate can be broken and damaged due to unbalanced stress in the use process.
Disclosure of Invention
The utility model aims at solving the problem that the existing box culvert steel strand arrangement structure that the above background art exists accepts that it is unbalanced, its roof and bottom plate can break and damage because of the unbalanced damage that causes of atress, and providing a steel strand arrangement structure for box culvert.
The technical scheme of the utility model is that: a steel strand arrangement structure for a box culvert comprises a box culvert concrete structure body with a section formed by a porous box structure, wherein a first prestressed tendon which is vertically arranged is arranged in a side wall of the box culvert, a second prestressed tendon which is vertically arranged is arranged in an intermediate wall,
the method is characterized in that: at least one group of prestressed structures is arranged in the top plate and the bottom plate of the box culvert, and each group of prestressed structures comprises two third prestressed tendons; the third prestressed tendons are steel strands which are arranged in a wave shape along the transverse direction, and two third prestressed tendons in the same group are arranged in a staggered mode; the first prestressed tendons and the second prestressed tendons are arranged in a staggered mode with the third prestressed tendons in the top plate and the bottom plate.
And further, two third prestressed tendons in the same group are mutually staggered to form a winding structure with a plurality of intersection points, and the two third prestressed tendons are symmetrically arranged by taking a connecting line of the plurality of intersection points as a central line.
The lowest point of one third prestressed tendon in the same group, namely the wave trough, and the highest point of the other third prestressed tendon, namely the wave crest, are arranged in pairs in a relative mode, and the projections of the two third prestressed tendons in the vertical direction are mutually overlapped.
The top and bottom plates between adjacent intermediate walls or side walls and adjacent intermediate walls have at least one set of oppositely disposed wave crests and wave troughs.
The fourth prestressed tendons penetrate through the top plate and the bottom plate along the horizontal longitudinal direction; and the fourth prestressed tendons are positioned at the intersection of the two third prestressed tendons in the same group and are arranged with the two third prestressed tendons in a staggered manner.
And the first prestressed tendon vertically passes through the intersection point of the two third prestressed tendons and is respectively arranged on the two transverse sides of the intersection point with the fourth prestressed tendon.
Furthermore, the second prestressed tendons are superposed with the vertical central line of the intermediate wall, and the cross points of the second prestressed tendons and the two third prestressed tendons in the same group are respectively located at the peak position of one third prestressed tendon and the trough position of the other third prestressed tendon.
The utility model has the advantages that: 1. through arranging a plurality of groups of prestressed structures in the top plate and the bottom plate, each group of prestressed structures comprises two third prestressed ribs which are distributed in a wave shape and are arranged in a staggered mode, the load bearing capacity of the prestressed structures can be greatly improved, the stress of the whole box culvert structure is more balanced, the stress can be balanced no matter the top plate and the bottom plate are on the upstream side or on the back side, and the structural stability is better;
2. the two third prestressed tendons are arranged in a staggered mode and are symmetrical by taking the intersection connecting line as a central line, so that the prestressed tendons can be distributed in the top plate and the bottom plate more uniformly, the load bearing capacity of the top plate and the bottom plate is greatly improved, the structure is more uniform, and the stress is more reasonable;
3. the wave troughs and the wave crests of the two third prestressed tendons are overlapped in the vertical direction, so that the structural strength of the upstream surface and the downstream surface of the top plate and the bottom plate are consistent, the stress is consistent, and a good prestressed structure with more balanced stress is formed;
4. the top plate and the bottom plate between the two vertical walls are provided with at least one group of wave crests and wave troughs, so that the distribution range of prestressed tendons in the top plate and the bottom plate in the vertical direction of the flow channel is ensured, the structures of the top plate and the bottom plate above and below the flow channel are more stable, the stress is more reasonable, the prestressed tendon is applied to the weakest flow channel position in the whole box culvert structure, and the stability of the whole box culvert structure is improved;
5. the fourth prestressed tendons are added in the box culvert structure and are arranged longitudinally along the box culvert, so that the structural strength of the whole box culvert structure in the flow channel direction is increased;
6. the first prestressed tendons and the fourth prestressed tendons are respectively arranged on the two transverse sides of the intersection point of the two third prestressed tendons, so that the four prestressed tendons are intersected at one position, the prestressed tendons of the whole structure are convenient to stretch and install, the stability of the whole stretching structure is improved, and the stress of the whole structure is more balanced and reasonable;
7. the second prestressed tendons penetrate through wave crests and wave troughs of the third prestressed tendons, the distribution range of the two third prestressed tendons in the middle partition wall is guaranteed, and the second prestressed tendons and the two third prestressed tendons are arranged in a staggered mode, so that the second prestressed tendons and the two third prestressed tendons are simpler, more convenient and more reasonable.
The utility model discloses simple structure, the atress is balanced, under the loading effect, the unfavorable tensile stress that its produced can be offset to this structure, avoids making it produce under the exogenic action and warp and impaired, and the whole stress of structure is contained to the reinforcing box extends its life.
Drawings
FIG. 1: the utility model discloses a box culvert steel strand arrangement structure sketch map;
FIG. 2: the enlarged schematic diagram of part a of fig. 1 of the present invention;
wherein: 1-a top plate; 2-side wall; 3-an intermediate wall; 4-a first tendon; 5-a second prestressed tendon; 6-third prestressed tendons; 7-fourth tendon; 8-bottom plate.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1-2, a steel strand wires arrangement structure for box culvert, the box culvert structure of this embodiment is box multithread way canal structure, including roof 1 and bottom plate 8, the horizontal both ends of roof 1 and bottom plate 8 are provided with along vertical arrangement's boundary wall 1, be provided with the mid-board 3 of a plurality of interval arrangements in the middle of roof 1 and bottom plate 8, both ends are fixed respectively on roof 1 and bottom plate 8 about boundary wall 1 and the mid-board 3, boundary wall 1 and the mid-board 3 interval arrangement and with roof 1 and bottom plate 8 formation cross section box culvert concrete structure that comprises porous box structure. The present embodiment is provided with prestressed tendons in the roof 1, the floor 8, the side walls 2 and the intermediate wall 3.
As shown in fig. 1, at least one set of prestressed structures is provided in the top plate 1 and the bottom plate 8 in this embodiment, each set of prestressed structure includes two third prestressed tendons 6, the third prestressed tendons 6 are steel strands arranged in a wave shape along the transverse direction, and the two third prestressed tendons 6 in the same set are arranged in a staggered manner. The two third prestressed tendons 6 in the same group are mutually staggered to form a winding structure with a plurality of intersection points, the two third prestressed tendons 6 are symmetrically arranged by taking a connecting line of the plurality of intersection points as a central line, and the connecting line of the plurality of intersection points is actually superposed with the transverse central lines of the corresponding top plate 1 and the corresponding bottom plate 8. The lowest point of one third prestressed tendon 6 in the same group, namely the wave trough, and the highest point of the other third prestressed tendon 6, namely the wave crest, are arranged in pairs in opposite mode, and the projections of the two points in the vertical direction are mutually overlapped. At least one set of oppositely arranged wave crests and wave troughs are arranged in the top plate 1 and the bottom plate 8 between the adjacent intermediate walls 3 or the side walls 2 and the adjacent intermediate walls 3, and as shown in fig. 1, a set of wave crests and wave troughs which correspond to each other in pairs are arranged in the top plate 1 and the bottom plate 8 between the adjacent intermediate walls 3 or the side walls 2 and the adjacent intermediate walls 3 in the embodiment.
The side wall 2 is internally provided with first prestressed tendons 4 which are vertically arranged, and the first prestressed tendons 4 are respectively arranged with the third prestressed tendons 6 in the two top plates 1 and the bottom plate 8 in a staggered manner. And second prestressed tendons 5 which are vertically arranged are arranged in the intermediate wall 3, and the second prestressed tendons 5 are staggered with third prestressed tendons 6 in the top plate 1 and the bottom plate 8. The second prestressed tendons 5 are superposed with the vertical central line of the intermediate wall 3, and the cross points of the second prestressed tendons 5 and the two third prestressed tendons 6 in the same group are respectively positioned at the peak position of one third prestressed tendon 6 and the trough position of the other third prestressed tendon 6.
In addition, in order to increase the structural strength of the box culvert structure in the longitudinal direction, the fourth prestressed tendons 7 arranged in the horizontal longitudinal direction penetrate through the top plate 1 and the bottom plate 8, and the fourth prestressed tendons 7 are located at the intersection of the two third prestressed tendons 6 and are arranged in a staggered mode with the two third prestressed tendons 6. As shown in fig. 2, the first tendon 4 vertically passes through the intersection of the two third tendons 6 and is disposed on both lateral sides of the intersection with the fourth tendon 7.
As shown in fig. 1, the lateral direction of the present embodiment refers to the left-right direction in fig. 1, the longitudinal direction refers to the direction perpendicular to the drawing sheet in fig. 1, and the vertical direction refers to the up-down direction in fig. 1.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a steel strand wires arrangement structure for box culvert, includes the box culvert concrete structure body that the section comprises porous box structure be provided with in the side wall (2) of box culvert along vertical arrangement first prestressing tendons (4), be provided with in mid-board (3) along vertical arrangement second prestressing tendons (5), its characterized in that: at least one group of prestressed structures are arranged in the top plate (1) and the bottom plate (8) of the box culvert, and each group of prestressed structures comprises two third prestressed tendons (6); the third prestressed tendons (6) are steel strands which are arranged in a wave shape along the transverse direction, and two third prestressed tendons (6) in the same group are arranged in a staggered mode; the first prestressed tendons (4) and the second prestressed tendons (5) are arranged in a staggered mode with the third prestressed tendons (6) in the top plate (1) and the bottom plate (8).
2. The steel strand arrangement structure for box culvert of claim 1, characterized in that: the two third prestressed tendons (6) in the same group are mutually staggered to form a winding structure with a plurality of intersection points, and the two third prestressed tendons (6) are symmetrically arranged by taking the connecting line of the plurality of intersection points as a central line.
3. A steel strand arrangement structure for box culvert according to claim 2, characterized in that: the lowest point, namely a trough, of one third prestressed tendon (6) in the same group and the highest point, namely a crest, of the other third prestressed tendon (6) are arranged in pairs in opposite mode, and projections of the two points in the vertical direction are overlapped with each other.
4. A steel strand arrangement structure for box culvert according to claim 3, characterized in that: the top plate (1) and the bottom plate (8) between the adjacent intermediate walls (3) or the side walls (2) and the adjacent intermediate walls (3) are internally provided with at least one group of wave crests and wave troughs which are oppositely arranged.
5. A steel strand arrangement structure for a box culvert according to any one of claims 2 to 4, wherein: the second prestressed tendon (7) penetrates through the top plate (1) and the bottom plate (8) along the horizontal longitudinal direction; the fourth prestressed tendons (7) are located at the intersection of the two third prestressed tendons (6) in the same group and are arranged in a staggered mode with the two third prestressed tendons (6).
6. A steel strand arrangement structure for box culvert according to claim 5, characterized in that: the first prestressed tendons (4) vertically penetrate through the intersection point of the two third prestressed tendons (6) and are respectively arranged on the two transverse sides of the intersection point with the fourth prestressed tendons (7).
7. A steel strand arrangement structure for box culvert according to claim 3, characterized in that: the second prestressed tendons (5) are superposed with the vertical central line of the intermediate wall (3), and the cross points of the second prestressed tendons (5) and the two third prestressed tendons (6) in the same group are respectively positioned at the peak position of one third prestressed tendon (6) and the trough position of the other third prestressed tendon (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921025286.3U CN210737396U (en) | 2019-07-02 | 2019-07-02 | Steel strand wires arrangement structure for box culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921025286.3U CN210737396U (en) | 2019-07-02 | 2019-07-02 | Steel strand wires arrangement structure for box culvert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210737396U true CN210737396U (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921025286.3U Active CN210737396U (en) | 2019-07-02 | 2019-07-02 | Steel strand wires arrangement structure for box culvert |
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| Country | Link |
|---|---|
| CN (1) | CN210737396U (en) |
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2019
- 2019-07-02 CN CN201921025286.3U patent/CN210737396U/en active Active
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