WO2018076498A1

WO2018076498A1 - Corner socket for bamboo composite pipe gallery

Info

Publication number: WO2018076498A1
Application number: PCT/CN2016/110244
Authority: WO
Inventors: 叶柃; 殷建学; 赵柱石
Original assignee: 浙江鑫宙竹基复合材料科技有限公司; 叶柃
Priority date: 2016-10-31
Filing date: 2016-12-16
Publication date: 2018-05-03
Also published as: CN108018873B; CN108018873A

Abstract

A corner socket for a bamboo composite pipe gallery. The corner socket is integrally embedded into a reserved annular insertion opening at each end part of adjacent two pipe segments in a pipe gallery, and the cross section of a coupling part of the corner socket is a wedge-shaped structure; the wedge-shaped structure is constituted of a horizontally extended flat upper surface, a left side surface and a right side surface that are left-right symmetric and extend to intersect to form an acute angle, and a ridge-shaped lower surface that is also left-right symmetric; two sides of the ridge-shaped lower surface each have a slope gradient of 5-10 degrees along a center line; the width of the corner socket is gradually reduced along the circumferential direction of the pipe segment in the pipe gallery.

Description

Bamboo composite pipe gallery with corner beam section

[Technical Field]

The invention belongs to the field of pipe supporting equipment, and more particularly to a corner beam joint for a bamboo composite pipe gallery.

【Background technique】

The integrated pipe gallery is a public tunnel that is laid underground in the city for centralized laying of municipal lines such as electricity, communications, water, drainage, heat and gas. China is in the period of rapid development of urbanization progress, but in contrast, underground infrastructure construction is seriously lagging behind. In 2013, the State Council issued the “Opinions on Strengthening Urban Infrastructure Construction” (Guo Fa (2013) No. 36), which first proposed to launch a pilot project for urban underground integrated pipe corridors, and launched a comprehensive underground in many large and medium-sized cities across the country. Integrated pipe gallery pilot project.

In the prior art, reinforced concrete is often used to prepare the pipe porch, but the structure has poor anti-leakage and earthquake resistance, and the construction engineering volume is large, the cost is high, and the construction period is long, so it is difficult to adapt to the requirements of modern city construction. In view of this, the inventors of the present application have proposed a prefabricated bamboo composite pipe gallery using bamboo fiber as a main reinforcing material, a resin as a binder, and a winding method, which is not only available in CN201510565472.6 and the like. The multi-type pipes including the input pipe, the water distribution pipe, the regenerative water pipe, the power cable, the communication cable, etc. are uniformly arranged in the gallery, and the characteristics of the axial tensile and bending strength of the bamboo are fully utilized, correspondingly in the pipe The distribution of stress-free defects is formed in the corridor structure, so that the product meets the bearing requirements.

With the promotion and practical application of bamboo composite pipe gallery in many domestic industries and projects, further research shows that since the prefabricated pipe gallery is assembled by multiple prefabricated straight pipes, how to quickly and conveniently execute the prefabricated straight pipe sections Inter-connectivity and effective sealing between the two are becoming one of the key technical issues that need to be addressed in this field. The search found that CN20161061389.2 proposed a structure that uses a mortise to match the wedge, and preset a waterproof gasket between the contact faces; CN20161054494.0 proposes a method for welding a connecting piece and a pre-embedded part by means of welding, and CN20161008215.0 proposes a method for inserting a pull-and-pull connecting piece into an adjacent piece to reserve a lifting point; however, the above The prior art is designed for the connection of pipe joints of reinforced concrete structures. It is usually necessary to perform welding or the like or it is necessary to process the embedded parts of the pipe sections, which not only easily increases the complexity and difficulty of the overall construction, but also greatly reduces the complexity. Construction efficiency, and in actual use often can not provide good pipe sealing performance. In addition, in some cases in the actual construction process, some adjacent pipe joints are inevitably required to be connected at a certain angle. In this case, how to provide a reliable seal in the case of actual corner rotation at the pipe joint connection The connection also constitutes a key technical issue worthy of attention.

[Summary of the Invention]

In view of the above deficiencies or improvement requirements of the prior art, the present invention provides a corner beam joint for a bamboo composite pipe gallery, wherein the pipe joints of the pipe composite joints are correspondingly constructed by comprehensively considering the structure and application characteristics of the bamboo composite integrated pipe gallery. The shape, the setting method and the key structural parameters are designed in a targeted manner. More practical tests have shown that even in the case where multiple straight pipes of the integrated pipe gallery need to be connected at a certain angle, they can still be completed well. The bamboo composite integrated pipe gallery has reliable connection between multiple straight pipes, and has the advantages of good sealing and stability, long service life and convenient construction and installation.

In order to achieve the above object, according to the present invention, a corner beam joint for a bamboo composite pipe gallery is provided, characterized in that the corner beam joint is integrally fitted and fitted to an annular socket reserved at respective ends of adjacent pipe sections of the pipe section. And the cross-section of the joint portion has a wedge-like structure; the wedge-shaped structure consists of a horizontally extending flat upper surface, left and right symmetrical and extending to the left and right sides of the acute angle, and the same left and right symmetrical lower surface The ridge lower surface has a slope of 5° to 10° along both sides of the center line; in addition, the width of the corner beam section gradually decreases along the circumferential direction of the pipe section.

Further preferably, the left and right sides of the corner bundle and the lower ridge surface are coated with an adhesive, whereby bonding is performed between the annular sockets in contact with the pipe section.

Further preferably, the outer side of the corner bundle is also wrapped with bamboo fibers, thereby further enhancing its sealing property.

Further preferably, the size parameter of the corner bundle is preferably designed as follows: the maximum width thereof, that is, the maximum distance from the left to the right of the straight upper surface is 40 mm to 80 mm, and the minimum width, that is, the straight upper surface The minimum distance from left to right is 30mm to 50mm.

Further preferably, the annular socket reserved at the end of the pipe section also has a slope of 5° to 10° and is complementary to one side of the ridged lower surface of the pipe segment connector.

Further preferably, the pipe joint connector includes, in order from the inside to the outside thereof, an inner protective layer, a bamboo winding reinforcing layer and an outer protective layer, wherein the inner protective layer is cured by a non-woven fabric impregnated with an adhesive. And forming a smooth and impervious inner wall; the bamboo winding reinforcing layer is formed by winding a bamboo slab adhered with a water-soluble resin on the outer layer of the inner lining; the outer protective layer is at the outermost side and is protected Aging and waterproofing.

Further preferably, for each pipe segment, it includes an inner liner layer and a structural layer adjacent to each other in the radial direction, wherein the inner liner layer is cured by a non-woven fabric impregnated with an adhesive. And forming a smooth and impervious inner wall; the structural layer is formed by multi-layer winding a bamboo curtain attached with a water-soluble resin and wrapping a mesh cloth outside the inner liner, the bamboo curtain being A plurality of bamboo rafts are connected by a braided wire to form a curtain structure.

Further preferably, the nonwoven fabric of the inner liner layer is preferably a bamboo fiber nonwoven fabric in which the bamboo fiber content is greater than or equal to 98%, the areal density is 40 g/m ² to 50 g/m ² , and the water content is 8%. ~15%.

Further preferably, the bamboo curtain of the structural layer comprises a circumferential bamboo curtain and an axial bamboo curtain, wherein the circumferential direction of the bamboo curtain, that is, all the bamboo sheets, is the length of the bamboo curtain The direction is consistent, and the axial direction of the bamboo slats, that is, all the bamboo slabs, is consistent with the width direction of the bamboo drapes formed therein; and the number of winding layers of the axial bamboo drapes in the entire structural layer The number of winding layers larger than the circumferential bamboo curtain; in addition, the radial tensile strength of the bamboo raft is set to 80±20 MPa, and the bamboo fiber content is 40%±5%, and the water content is 10%±2. In addition, the tensile strength of the annular bamboo curtain is 1500±100N, and the stretching of the axial bamboo curtain The strength is 200 ± 20N.

Further preferably, the mesh of the structural layer is preferably made of polyester polyester, and has a mesh center distance of 4 mm×4 mm, an areal density of 30 g/m ² to 40 g/m ² , and a warp and weft elongation. The rate of growth is greater than or less than 5%.

Further preferably, the inner side of the inner liner layer may further be provided with a waterproof layer, and the outer side of the structural layer may also be provided with an outer protective layer.

In general, the above technical solution conceived by the present invention is compared with the prior art, and the specific shape structure and the arrangement manner of the pipe segment connecting piece itself are designed in a targeted manner, and not only can the glue be easily applied after the installation is performed. Alternately inserted into the socket of the pipe straight pipe to be assembled, and its slope design can further enhance the friction and firm adhesion with the straight pipe socket; in particular, even in the actual assembly process, the two-stage pipe is required The angle between the straight pipes of the gallery is at a certain angle. The above structural design can still complete the reliable connection between the multiple straight pipes of the bamboo composite integrated pipe gallery and obtain the effect of basically no gap; in addition, through the composition of the pipe joints Further research and design of its key parameters, which can be better compatible with pipe joints made of bamboo composites, the products obtained can not only perform high-efficiency, quality controllable sealing between large-volume pipe sections It is connected and ensures quality and performance stability even in long-term use environments.

[Description of the Drawings]

Figure 1 is a cross-sectional view showing the basic structure of a pipe section of a bamboo composite pipe to be assembled, and more specifically showing an annular socket at the end of the pipe at the right side thereof;

2 is a cross-sectional view showing the overall structure of a corner beam section designed in accordance with a preferred embodiment of the present invention, and more specifically showing its cross-sectional shape and its critical dimension for performing a sealing coupling portion with an annular socket;

Figure 3 is a cross-sectional view showing the structure after the pipe joint connector is fitted between the two pipe pipe sections by a corner joint;

Fig. 4 is a perspective view showing the structure in which the pipe joint connector is fitted between the two pipe pipe sections by a corner joint.

【detailed description】

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Further, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the basic structure of a pipe section of a bamboo composite pipe to be assembled, and more specifically showing an annular socket at the end of the pipe at the right side thereof, but the structure of the ring socket at the left end of the pipe is The same. As shown in Fig. 1, as a basic component of the bamboo composite pipe gallery, each pipe segment is in the form of a straight pipe having a length L ₀ (preferably 6000 mm) and an outer diameter of Ф ₀ and D ₀ respectively, and at the left and right ends thereof. Each of them is pre-processed with a circular socket. More specifically, the inside of the straight pipe may be sequentially machined with grooves having a depth of h1 and a width of d1 according to different pitches (L ₁ and L ₂ ); and then first cut at the ends thereof in the vertical direction. a wall having a height h ₂ and then forming a slope having a length d ₂ and a slope of 5° to 10° in a downwardly inclined direction, and leaving the wall thickness at the rightmost end as h ₃ ; In this way, a socket having both a vertical contact surface and a slope contact surface can be obtained to facilitate subsequent sealing engagement with the connector.

2 is a cross-sectional view showing the overall structure of a corner beam section designed in accordance with a preferred embodiment of the present invention, and more specifically showing a cross-sectional shape thereof for performing a sealing coupling portion with an annular socket, wherein the width and width are further shown. The specific profile of the smallest joint. As shown in Fig. 2, the length of the corner bundle can be determined according to the requirements of the pipe gallery, generally 400 mm to 600 mm, and is integrally fitted at the end of the pipe pipe section to thereby form a ring having a circumference of Ф _w . More specifically, the corner beam section is used to jointly join the adjacent two pipe straight pipes, for example, a cutting manner can be used to form a wedge-shaped cross section, and the width of the corner beam section is along the pipe pipe section. The circumferential direction is gradually reduced; the wedge-shaped structure consists of a horizontally extending flat upper surface (having a maximum width of La and _a minimum width of L _b ), a left-right symmetry, and an extension of the left and right sides intersecting the acute angle (the The height corresponding to the maximum width is t ₁ , the height corresponding to the minimum width is t ₂ ), and the left and right symmetrical lower surfaces are combined, and the ridge-shaped lower surface has 5 sides on both sides of the center line. The slope of °~10° (at the maximum width, the angle between the slope and the vertical line is α; and at the minimum width, the angle between the slope and the vertical line is β).

By the above concept, when performing the assembly, the adhesive can be first applied to the left and right sides of the pipe joint and the lower surface of the ridge, and then the pipe segments to be assembled on the two sides of the pipe are respectively opposite to the connector. The connection is made whereby bonding is performed between the annular sockets that are in contact with the pipe section by the wedge structure. On the one hand, the slope design of the end face of the connecting piece and the pipe section can further enhance the friction and firm adhesion between each other; on the other hand, the design of the left and right sides and the straight upper surface can occur between the pipe sections to be assembled. In the case of corners, the coupling can still be carried out smoothly and the entire pipe gallery after final assembly is ensured to obtain a reliable sealing connection.

In addition, according to a preferred embodiment of the present invention, the key dimension parameters of the corner beam section are also designed as follows: the maximum width, that is, the maximum distance from the left to the right of the straight upper surface is 40 mm to 80 mm, and the minimum width is also The minimum distance from the left to the right of the straight upper surface is 30 mm to 50 mm. More practical tests have shown that the above dimensional parameters can achieve a good balance between the finally obtained sealing performance and the amount of materials used, and at the same time facilitate the processing and processing operations of various types of bamboo composite pipe straight pipes.

3 and 4 respectively show a cross-sectional view and a perspective view of the above-described bundle section being fitted between the two pipe trunk sections by a corner joint. As shown in the figure, the surface of the two pipe joints after assembly is basically smooth and can be used very well with the pipe joint pipe made of bamboo composite material, and the obtained products can not only be highly efficient and controllable. It performs sealing connection between large-volume pipe sections and ensures quality and performance stability under long-term use environment, so it is especially suitable for sealing joint applications between pipe sections of bamboo composite pipe.

Those skilled in the art will appreciate that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention, All should be included in the scope of protection of the present invention.

Claims

The utility model relates to a corner beam joint for a bamboo composite pipe porch, characterized in that the corner beam joint is integrally fitted and installed at an annular socket reserved at respective ends of two adjacent pipe trunk pipe sections, and a cross section of the joint portion is a wedge-shaped structure. The wedge-shaped structure is composed of a horizontally extending flat upper surface, left and right symmetrical and extending left and right sides intersecting at an acute angle, and also a left and right symmetrical lower ridge surface, and the ridged lower surface is along the center line The sides have a slope of 5° to 10°; in addition, the width of the corner bundle is gradually reduced along the circumferential direction of the pipe section.
The corner joint for a bamboo composite pipe rack according to claim 1, wherein the left and right sides of the corner beam section and the ridge-shaped lower surface are coated with an adhesive, thereby forming a pipe section Bonding is performed between the annular sockets that are in contact.
The corner joint for a bamboo composite pipe rack according to claim 1 or 2, wherein the outer side of the corner bundle is preferably also wrapped with bamboo fibers, thereby further enhancing the sealing property.
The corner beam joint for a bamboo composite pipe rack according to any one of claims 1 to 3, wherein the size parameter of the corner beam section is preferably designed as follows: the maximum width thereof, that is, the straight upper surface is from the left The maximum distance to the right is 40 mm to 80 mm, and the minimum width, that is, the minimum distance from the left to the right of the straight upper surface is 30 mm to 50 mm.
The corner beam joint for a bamboo composite pipe rack according to any one of claims 1 to 4, wherein the annular socket reserved at the end of the pipe pipe section also has a slope of 5° to 10°, and One side of the ridged lower surface of the tube segment connector is complementary.
The corner beam joint for a bamboo composite pipe rack according to any one of claims 1 to 5, characterized in that the corner bundle section includes an inner protective layer, a bamboo winding reinforcing layer and an outer protection in order from the inside to the outside in the thickness direction thereof. a layer, wherein the inner protective layer is formed by curing a nonwoven fabric impregnated with an adhesive, and forms a smooth and impervious inner wall; the bamboo wound reinforcing layer is wound by the bamboo raft sheet adhered with the water-soluble resin The outer layer is cured; the outer protective layer is on the outermost side and functions as anti-aging and waterproof.