CN216922160U - Pre-tensioning combined steel pipe curtain - Google Patents
Pre-tensioning combined steel pipe curtain Download PDFInfo
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- CN216922160U CN216922160U CN202122829359.8U CN202122829359U CN216922160U CN 216922160 U CN216922160 U CN 216922160U CN 202122829359 U CN202122829359 U CN 202122829359U CN 216922160 U CN216922160 U CN 216922160U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
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Abstract
The utility model discloses a pre-tensioning combined steel pipe curtain, which relates to the technical field of pipe-jacking construction and comprises square steel pipes, wherein the square steel pipes are spliced in the transverse direction and the longitudinal direction, the steel pipe curtain is formed after the square steel pipes are jacked in, reserved holes are formed in the square steel pipes, steel strands penetrate through the reserved holes of each row of the square steel pipes on the section of the steel pipe curtain, anchors are arranged at two ends of each steel strand, the steel strands and the anchors are matched to fix the square steel pipes, a fixing structure is formed at the joint of the square steel pipes, and concrete is poured in the square steel pipes. The utility model is suitable for the problem of difficult pipe jacking construction of large-section and special-shaped section pipelines and the condition of higher environmental protection requirement around a construction site, can flexibly perform block and subsection construction according to the specific condition of the construction environment, is convenient for equipment installation and transportation, and has low requirement on the space of the construction site.
Description
Technical Field
The utility model relates to the technical field of pipe jacking construction, in particular to a pre-tensioning combined steel pipe curtain.
Background
The pipe jacking technology is an engineering construction technology which adopts a non-excavation mode and utilizes a pipe jacking machine to carry out tunneling and underground pipeline laying. With the development of socioeconomic, the demand of China on the construction of pipelines with large cross sections and special-shaped cross sections is continuously increased, so that a large pipe jacking machine with the same shape and size as the cross section needs to be manufactured. And the large-scale push bench is great in disturbance to the surrounding soil body when being under construction, is easily influenced and limited by the surrounding environment, and has large equipment size and inconvenient installation and transportation.
Based on the problems, a pre-tensioning combined steel pipe curtain and a construction method thereof are designed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a pre-tensioning combined steel pipe curtain and a construction method thereof.
The utility model provides a pre-tensioning combined steel pipe curtain, which adopts the following technical scheme:
a pre-tensioning combined steel pipe curtain comprises square steel pipes, wherein the square steel pipes are spliced in the transverse direction and the longitudinal direction, the square steel pipes form a steel pipe curtain after jacking is completed, reserved holes are formed in the square steel pipes, steel strands penetrate through the reserved holes of each row of the square steel pipes on the section of the steel pipe curtain, anchorage devices are arranged at two ends of each steel strand, the steel strands are matched with the anchorage devices to fix the square steel pipes, a fixing structure is formed at the joint of the square steel pipes, and concrete is poured in the square steel pipes.
The utility model is further arranged in such a way that an inwards concave clamping groove is formed on the binding surface of the square steel pipe, a steel clamping piece is arranged between the adjacent square steel pipes, and the adjacent square steel pipes are inserted into the clamping grooves through the steel clamping piece for splicing.
The utility model is further provided that each binding surface of the square steel tube is provided with two clamping grooves.
The utility model is further arranged in such a way that the end parts of the square steel pipes are provided with lap joints, the lap joints on the two spliced square steel pipes are sleeved, and the lap joints are connected through rivets.
The utility model is further set that the fixing structure is formed by welding the joints of the square steel pipes.
The utility model is further arranged that the fixed structure is formed by adding a welded steel plate ring at the joint of the square steel pipe.
The utility model is further provided that an anchor backing plate is arranged between the anchor and the square steel tube.
The utility model is further provided that a steel reinforcement cage is arranged in the square steel tube.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model can solve the problem of difficult pipe jacking construction of large-section and special-shaped section pipelines, can be suitable for the condition of higher environmental protection requirement around a construction site, and has the following advantages:
1. the positions and the number of the combined square steel pipes can be adjusted to match the shapes and the sizes of various large-section and special-shaped section pipelines;
2. the block construction and the subsection construction can be flexibly carried out according to the specific conditions of the construction environment;
3. because the jacking section is smaller, the disturbance to the surrounding soil body is smaller during the construction of the jacking pipe, the influence on the surrounding environment is small, and the construction is safe and reliable;
4. the required equipment and components have smaller sizes, small occupied area and convenient installation and transportation, and can be used for construction in limited sites;
5. the steel pipes are spliced by the steel clamping pieces and the rivets, so that the steel pipe is firm and reliable and has good integrity;
6. concrete can be poured into the square steel pipe to be used as a permanent structure;
7. steel strands and steel reinforcement cages can be arranged in the square steel pipe according to stress calculation; and adding welding or adding a welding steel plate ring at the joint of the square steel pipe, and further optimizing the performance of the steel pipe curtain.
Drawings
FIG. 1 is a schematic view of a steel pipe combination splicing structure according to the present invention;
FIG. 2 is a schematic view of the transverse splicing position of the square steel tube according to the present invention;
FIG. 3 is a schematic structural view of a longitudinal splicing part of steel pipes, which is mainly embodied in a steel pipe curtain outer side connecting structure;
FIG. 4 is a schematic view of a longitudinal joint structure of steel pipes, which is mainly embodied in an inner side connection structure of a steel pipe curtain;
FIG. 5 is a schematic view of an anchor according to the present invention;
FIG. 6 is a schematic end view of an anchor according to the present invention.
Reference numbers in the figures: 1. a square steel pipe; 2.1, a clamping groove; 2.2, a steel clamping piece; 3.1, lap joint; 3.2, riveting; 3.3, riveting; 4. steel strand wires; 5. an anchorage device; 6. a bellows; 7. reserving holes; 8. a steel plate ring; 9. and (5) anchoring a backing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The utility model discloses a pre-tensioning combined steel pipe curtain.
As shown in fig. 1 to 6, the pretensioned composite steel tube curtain includes square steel tubes 1 of the same size, and the square steel tubes 1 are spliced in the transverse and longitudinal directions to form the square steel tubes 1 with the positioning and guiding functions.
Specifically, the surface of square steel pipe 1 is formed with the draw-in groove 2.1 of indent along its length direction, and draw-in groove 2.1 all appears in groups in 1 side of square steel pipe, and quantity is two. Specifically, the slot 2.1 is a dovetail groove.
As shown in fig. 2, when the adjacent square steel pipes 1 are adhered, the dovetail grooves on the square steel pipes 1 correspond to each other, the steel clamping pieces 2.2 are inserted into the dovetail grooves of the adjacent square steel pipes 1, and the adjacent square steel pipes 1 are spliced by the steel clamping pieces 2.2, namely, the transverse splicing structure of the square steel pipes 1 is realized.
In the utility model, the steel clamping piece 2.2 is of a thin-wall strip-shaped structure, thereby achieving the purposes of reducing weight and saving cost.
The inside wall and the lateral wall processing at 1 both ends of square steel pipe are groove structure, form overlap joint 3.1 of establishing each other, and overlap joint 3.1's thickness is half of 1 thickness of square steel pipe. After the square steel pipe 1 is positioned and spliced through the lap joint 3.1, the square steel pipe 1 is fixed.
As shown in fig. 3, when the outer side of the steel pipe 1 is fixed, the end of the steel pipe 1 is fixed by the rivet 3.2, that is, the outer side of the steel pipe 1 is longitudinally spliced.
As shown in fig. 4, when the inner side of the steel pipe bundle 1 is fixed, the end portions of the steel pipe bundle 1 are connected by the rivets 3.3, that is, the inner side of the steel pipe bundle 1 is connected in the longitudinal direction.
In the jacking process of the square steel pipe 1, the square steel pipe 1 is jacked and spliced according to the sequence of firstly jacking the upper part, then jacking the lower part, firstly jacking the two sides and then jacking the middle part to form a steel pipe curtain until the steel pipe curtain is completely jacked. In the process, transverse splicing is performed in advance, and after jacking is completed, longitudinal splicing is performed.
The reserved holes 7 are formed in the square steel tubes 1, steel strands 4 penetrate through the reserved holes 7 of each row of square steel tubes 1 on the steel tube curtain section, anchorage devices 5 are installed at two ends of the steel strands 4, anchor backing plates 9 are installed between the anchorage devices 5 and the square steel tubes 1, the anchor backing plates 9 are fixed on the square steel tubes 1, the end portions of the anchorage devices 5 are fixedly clamped on the anchor backing plates 9, the steel strands 4 between the anchorage devices 5 are straightened through tensioning machines, and the steel strands 4 are fixed with the anchorage devices 5 in a matched mode with the steel tubes 1 of the other side.
When in use, the steel strand 4 is generally sleeved with the corrugated pipe 6, and the steel strand 4 is protected by the corrugated pipe.
In addition, the steel strands 4 can also be arranged along the jacking direction of the jacking pipe so as to enhance the structural stability of the whole body.
In the utility model, a fixed structure is formed at the joint of the square steel tube 1, and the fixed structure is formed by welding or welding the steel ring plate 8 at the joint of the square steel tube 1. Generally, in order to secure the structural strength of the steel pipe curtain, a steel ring plate 8 is welded to the joint of the square steel pipe 1.
And finally, concrete is poured into the square steel tube 1, and the concrete is poured into the square steel tube 1 from bottom to top in the pouring sequence, so that the compactness of the concrete in the square steel tube 1 is ensured.
According to the utility model, the number and the position of the square steel tubes 1 are determined according to the actual pipe jacking condition, the stress of the square steel tubes 1 is analyzed, and finally whether a reinforcement cage needs to be additionally arranged in the square steel tubes 1 is determined.
The utility model also discloses a pretensioning method combined steel pipe curtain construction method,
the pre-tensioning method combined steel pipe curtain construction method comprises the following steps of:
and S1, determining the positions and the number of the combined square steel tubes 1 according to the shapes and the sizes of the cross sections of various large-sized pipelines with different cross sections.
And S2, carrying out stress analysis on the steel pipe 1, and determining the specification and the arrangement position of the steel strand 4 or the steel strand 4 and the reinforcement cage.
And S3, reserving holes 7 on the square steel pipe 1 according to the arrangement of the steel strands 4.
And S4, jacking and splicing the square steel pipes 1 according to the sequence of firstly jacking the upper part, then jacking the lower part, firstly jacking the two sides and then jacking the middle part to form a steel pipe curtain until the steel pipe curtain is completely jacked.
And S5, digging soil inside the steel pipe curtain by using mechanical equipment.
And S6, arranging tension steel strands 4 in the square steel pipe 1, and fixing the square steel pipe 1 through the cooperation of the steel strands 4 and the anchorage device 5.
And S7, welding or welding the steel plate ring 8 at the joint of the opposite steel pipe 1.
And S8, pouring concrete into the square steel tube 1 from bottom to top.
And S9, curing the concrete to the designed strength.
The implementation effect of the utility model is as follows:
the utility model relates to a pre-tensioning combined steel pipe curtain and a construction method thereof, which can solve the problem of difficult pipe jacking construction of large-section and special-shaped section pipelines and can be suitable for the condition of higher environmental protection requirement around a construction site.
The utility model has the following advantages:
1. the shape and the size of various large-section and special-shaped section pipelines can be matched by adjusting the position and the number of the combined square steel pipes 1;
2. the block construction and the subsection construction can be flexibly carried out according to the specific conditions of the construction environment;
3. because the jacking section is smaller, the disturbance to the surrounding soil body is smaller during the construction of the jacking pipe, the influence on the surrounding environment is small, and the construction is safe and reliable;
4. the required equipment and components have small size, small occupied area and convenient installation and transportation, and can be used for construction in limited sites;
5. the steel pipe 1 is spliced by the steel clamping piece 2.2 and the rivet, so that the steel pipe is firm and reliable and has good integrity;
6. concrete can be poured into the square steel tube 1 to be used as a permanent structure;
7. the steel strand 4 and the steel reinforcement cage can be arranged in the square steel pipe 1 according to stress calculation; and adding welding or adding a welding steel plate ring at the joint of the square steel pipe 1, and further optimizing the performance of the steel pipe curtain.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. The pre-tensioning combined steel pipe curtain is characterized by comprising a square steel pipe (1), the square steel pipe (1) is spliced in the transverse direction and the longitudinal direction, the square steel pipe (1) forms a steel pipe curtain after jacking is completed, reserved holes (7) are formed in the square steel pipe (1), steel strands (4) penetrate through the reserved holes (7) of each row of the square steel pipe (1) on the section of the steel pipe curtain, anchorage devices (5) are arranged at two ends of each steel strand (4), the steel strands (4) are matched with the anchorage devices (5) to fix the square steel pipe (1), a fixing structure is formed at the joint of the square steel pipe (1), and concrete is poured in the square steel pipe (1).
2. A pre-tensioning combined steel pipe curtain as claimed in claim 1, wherein a concave clamping groove (2.1) is formed on a joint surface of the square steel pipe (1), a steel clamping piece (2.2) is arranged between adjacent square steel pipes (1), and adjacent square steel pipes (1) are inserted into the clamping groove (2.1) through the steel clamping piece (2.2) for splicing.
3. A pre-tensioned composite steel tubular curtain as claimed in claim 2, wherein each abutting surface of the square steel tubular (1) is formed with two clamping grooves (2.1).
4. A pre-tensioning combined steel pipe curtain as claimed in claim 3, wherein the end of the square steel pipe (1) is provided with a lap joint (3.1), the lap joints (3.1) on the two spliced square steel pipes (1) are sleeved, and the lap joints (3.1) are connected through rivets (3.2, 3.3).
5. A pre-tensioned composite steel tube curtain as claimed in claim 1, wherein the fixing structure is a welded joint of the square steel tubes (1).
6. A pre-tensioned composite steel tube curtain as claimed in claim 1, wherein the fixing structure is a welded steel plate ring (8) at the joint of the square steel tube (1).
7. A pre-tensioned assembled steel tube curtain as claimed in claim 1, wherein an anchor backing plate (9) is provided between the anchor (5) and the square steel tube (1).
8. A pre-tensioned composite steel tube curtain as claimed in claim 1, wherein a steel reinforcement cage is arranged in the square steel tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829359.8U CN216922160U (en) | 2021-11-18 | 2021-11-18 | Pre-tensioning combined steel pipe curtain |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829359.8U CN216922160U (en) | 2021-11-18 | 2021-11-18 | Pre-tensioning combined steel pipe curtain |
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| CN216922160U true CN216922160U (en) | 2022-07-08 |
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| CN202122829359.8U Active CN216922160U (en) | 2021-11-18 | 2021-11-18 | Pre-tensioning combined steel pipe curtain |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109448A (en) * | 2021-11-18 | 2022-03-01 | 上海铁能建设工程有限公司 | Pre-tensioning combined steel pipe curtain and construction method thereof |
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2021
- 2021-11-18 CN CN202122829359.8U patent/CN216922160U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109448A (en) * | 2021-11-18 | 2022-03-01 | 上海铁能建设工程有限公司 | Pre-tensioning combined steel pipe curtain and construction method thereof |
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