CN108018873B - Structure for mounting corner binding section between two pipe gallery pipe sections by corner connection - Google Patents

Abstract

The invention belongs to the related field of pipe gallery supporting equipment, and discloses a structure in which a corner bundle section is fitted and installed between two pipe gallery pipe sections by using a corner connection, and the corner bundle section is integrally fitted and installed on two adjacent sections of the pipe gallery. At the annular sockets reserved at the respective ends of the pipe segments, and the cross-section of the connecting part is a wedge-shaped structure; the wedge-shaped structure consists of a horizontally extending straight upper surface, left and right symmetrical and extending and intersecting at acute angles. The left side and the right side, and The ridge-shaped lower surface that is also symmetrical on both sides is composed together, and the ridge-shaped lower surface has a slope of 5° to 10° along both sides of the midline; Gradient zoom out. Through the present invention, even in the case where the multiple straight pipes of the integrated pipe gallery need to be connected at a certain angle, the reliable connection between the multiple straight pipes of the bamboo composite integrated pipe gallery can be well completed, and the tightness and the It has the advantages of good stability, long service life and easy construction and installation.

Description

A structure in which corner bundles are fitted and installed between two pipe gallery sections by corner joints

technical field

The invention belongs to the related field of pipe gallery supporting equipment, and more particularly relates to a structure in which a corner bundle section is fitted and installed between two pipe gallery pipe sections by a corner connection.

Background technique

The integrated pipe gallery is a public tunnel laid in the city underground for the centralized laying of municipal pipelines such as electricity, communication, water supply, drainage, heat and gas. my country is in a period of rapid development of urbanization, while the construction of underground infrastructure is seriously lagging behind. In 2013, the State Council issued the "Opinions on Strengthening Urban Infrastructure Construction" (Guo Fa (2013) No. 36), in which it was the first time to propose a plan to carry out the pilot project of urban underground comprehensive pipe gallery, and to fully launch underground pipelines in many large and medium-sized cities across the country. Comprehensive pipe gallery pilot project.

In the prior art, reinforced concrete is mostly used to prepare the pipe gallery, but this structure has poor anti-leakage and earthquake resistance, and has large construction volume, high cost and long construction period, so it is difficult to meet the requirements of modern urban construction. In view of this, the inventors of the present application have proposed in CN201510565472.6 etc. the use of bamboo fiber as the main reinforcing material, with resin as the binder, and the prefabricated bamboo composite pipe gallery that is processed and formed by winding, which not only can Multiple types of pipes, including input pipes, water distribution pipes, recycled water pipes, power cables, communication cables, etc., are uniformly arranged in the corridor, and the characteristics of maximum axial tensile and flexural strength of bamboo are fully utilized. A stress-free defect distribution is formed in the gallery structure, so that the product can meet the bearing requirements.

With the promotion and practical application of bamboo composite pipe gallery in many industries and projects in China, further research shows that since the prefabricated pipe gallery is assembled from multiple prefabricated straight pipes, how to quickly and conveniently implement the prefabricated straight pipe section It is becoming one of the key technical problems that need to be solved urgently in this field. It is found through retrieval that CN20161061389.2 proposes a structure in which a socket is matched with a wedge head, and a waterproof sealing gasket is preset between the contact surfaces; CN20161054494.0 proposes a welding method to connect the connector and the embedded A method for performing welding of pieces, CN20161008215.0 proposes a method for inserting a pair of tensile connectors into adjacent segments and reserving a hoisting point; however, the above-mentioned prior art are all designed for the connection of pipe gallery and pipe section of a reinforced concrete structure , it is usually necessary to perform welding and other operations or to process the embedded parts of the pipe section, which not only easily increases the complexity and difficulty of the overall construction, but also greatly reduces the construction efficiency, and often cannot provide good pipe section sealing performance in actual use. . In addition, in view of some occasions in the actual construction process, it is inevitable that some adjacent pipe gallery pipe sections need to be connected at a certain angle. In this case, how to provide a reliable seal even when the actual rotation angle occurs at the joint of the pipe sections Connection, also constitutes a key technical issue worthy of attention.

SUMMARY OF THE INVENTION

In view of the above deficiencies or improvement needs of the prior art, the present invention provides a structure in which the corner bundles are fitted and installed between two pipe sections of the pipe gallery by using the corner connection. Correspondingly, the corner bundle section has been designed in terms of its structural shape, setting method, and key structural parameters. Many actual tests have shown that even if there is a need for a certain angle between the multiple straight pipes in the integrated pipe gallery In the case of connection, the reliable connection between multiple straight pipes of the bamboo composite integrated pipe gallery can still be well completed, and it has the advantages of good sealing and stability, long service life and easy construction and installation.

In order to achieve the above purpose, according to the present invention, a structure is provided in which a corner bundle is fitted and installed between two pipe gallery pipe sections by a corner connection, wherein the corner bundle is integrally fitted and installed in two adjacent sections The annular sockets reserved at the respective ends of the pipe sections of the pipe gallery, and the cross-section of the connecting part is a wedge-shaped structure; the wedge-shaped structure consists of a horizontally extending straight upper surface, left-right symmetrical and extending and intersecting as an acute angle. The left side and the right side , and the same left-right symmetrical ridged lower surface, and the ridged lower surface has a slope of 5° to 10° along both sides of the midline; in addition, the width of the corner bundle section is along the circumferential direction of the pipe gallery. The direction is gradually reduced.

As a further preference, the left and right side surfaces and the ridge-shaped lower surface of the corner bundle section are coated with an adhesive, so that bonding is performed between the annular sockets in contact with the pipe gallery pipe sections.

As a further preference, the outer sides of the corner bundles are also wrapped with bamboo fibers, thereby further enhancing their sealing properties.

As a further preference, the size parameters of the corner bundle section are designed as follows: the maximum width, that is, the maximum distance from left to right of the straight upper surface, is 40mm to 80 mm, and the minimum width, that is, the straight upper surface is from The minimum distance from left to right is 30mm to 50mm.

As a further preference, the annular socket reserved at the end of the pipe gallery pipe section also has a slope of 5° to 10°, and is complementary to one side of the ridged lower surface of the corner bundle section.

As a further preference, the corner bundle section includes an inner protective layer, a bamboo winding reinforcing layer and an outer protective layer in turn from the inside to the outside along its thickness direction, wherein the inner protective layer is made of a non-woven fabric impregnated with an adhesive. obtain, and form a smooth and impermeable inner wall; this bamboo winding reinforcement layer is formed by winding the bamboo strips adhered with water-soluble resin to be cured outside the inner protective layer; the outer protective layer is at the outermost side, and plays a role in preventing Aging and waterproof function.

As a further preference, for each pipe gallery section, it includes an inner lining layer and a structural layer adjacent to each other along the radial direction, wherein the inner lining layer is made by curing a non-woven fabric impregnated with an adhesive , and form a smooth and impermeable inner wall; the structural layer is made of a bamboo stripe curtain adhered with a water-soluble resin and wrapped with a mesh cloth, which is multi-layered and cured outside the inner lining layer, and the bamboo stripe curtain is made of A curtain-like structure composed of a plurality of bamboo strips connected by braided wires.

As a further preference, the non-woven fabric of the inner lining layer is a bamboo fiber non-woven fabric, wherein the bamboo fiber content is greater than or equal to 98%, the areal density is 40g/m ² -50 g/m ² , and the moisture content is 8% ~15%.

As a further preference, the bamboo strip curtain of the structural layer includes a circumferential bamboo strip curtain and an axial bamboo strip curtain, wherein the circular bamboo strip curtain, that is, the length direction of all the bamboo strip sheets, is the same as the length of the bamboo strip curtain formed by the circular bamboo strip curtain. The direction is consistent, that is, the length direction of all the bamboo strips in the axial direction is consistent with the width direction of the bamboo strips formed by the bamboo strips; and in the entire structural layer, the number of winding layers of the axial bamboo strips greater than the number of winding layers of the annular bamboo strip curtain; in addition, the radial tensile strength of the bamboo strip is set to 80±20MPa, and the bamboo fiber content is 40%±5%, and the moisture content is 10%±2 %; in addition, the tensile strength of the annular bamboo striped curtain is 1500±100N, and the tensile strength of the axial bamboo striped curtain is 200±20N.

As a further preference, the mesh fabric of the structural layer is made of polyester polyester, and its mesh center distance is 4mm×4mm, the area density is 30g/m ² -40g/m ² , and the elongation at break in the warp and weft directions is rate is greater than or less than 5%.

As a further preference, the inner side of the inner lining layer is provided with a waterproof layer, and the outer side of the structural layer is provided with an outer protective layer.

In general, compared with the prior art, the above technical solutions conceived by the present invention, by making targeted designs for the specific shape and structure of the corner bundles themselves and their setting methods, not only facilitates the installation after gluing. Alternate sockets are inserted into the sockets of the straight pipe of the pipe gallery to be assembled, and its slope design can further enhance the friction and firm adhesion between the straight pipe sockets; There is a certain angle between the straight pipes of the corridor, and the above structural design can still well complete the reliable connection between the multiple straight pipes of the bamboo composite integrated pipe corridor and obtain the effect of basically no gaps; Further research and design are made on its key parameters, which can be better compatible with the pipe gallery pipe section made of bamboo composite materials, and the obtained product can not only perform the sealing between large quantities of pipe sections with high efficiency and controllable quality connection, and can ensure quality and performance stability in a long-term use environment.

Description of drawings

1 is a sectional view showing the basic structure of the bamboo composite pipe gallery pipe section to be assembled, and more specifically, the annular socket at the right pipe end thereof is shown enlarged;

2 is a cross-sectional view of the overall structure of a corner bundle section designed according to a preferred embodiment of the present invention, and more specifically enlarged to show the cross-sectional shape and key dimensions of the part used to perform sealing coupling with the annular socket;

Figure 3 is a cross-sectional view of the structure after the corner joint is fitted and installed between two pipe gallery pipe sections by means of corner connection;

Figure 4 is a perspective view of the structure after the corner bundles are fitted and installed between two pipe gallery pipe sections by means of corner connection.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Figure 1 is a sectional view showing the basic structure of the bamboo composite pipe gallery pipe section to be assembled, and more specifically shows the annular socket at the right pipe end, but the structure of the annular socket at the left pipe end is the same as the the same. As shown in Figure 1, as a basic component of the bamboo composite pipe gallery, each pipe section is in the form of a straight pipe with a length of L ₀ (preferably 6000mm), an outer and inner diameter of Ф ₀ and D ₀ , respectively, and at its left and right ends Each is uniformly pre-machined with an annular socket. More specifically, the interior of the straight pipe can be sequentially machined with grooves with a depth h ₁ and a width d ₁ at intervals (L ₁ and L ₂ ) of different lengths; and then firstly along the vertical direction at its ends Cut off the pipe wall with a height of h ₂ , and then form a slope with a length of d ₂ and a slope of 5° to 10° along the downward sloping direction, and leave the thickness of the pipe wall at the far right end as h ₃ ; In this way, a socket with both a vertical contact surface and a sloped contact surface can be obtained, so as to facilitate the subsequent sealing connection with the connector.

Fig. 2 is a sectional view of the overall structure of the corner bundle section designed according to the preferred embodiment of the present invention, and more specifically, it is enlarged to show the sectional shape of the part used to perform sealing connection with the annular socket, wherein the maximum width and the width are further shown. The specific section of the smallest joint site. As shown in Figure 2, the length of the corner bundle section can be determined according to the requirements of the pipe gallery, generally 400mm to 600mm, and is integrally fitted and installed at the end of the pipe section of the pipe gallery to form a ring with a circumference of _Фw . More specifically, the section of the corner bundle section used to jointly connect two adjacent straight pipes of the pipe gallery can be cut to form a section with a wedge-shaped structure, and the width of the corner bundle section is along the length of the pipe section of the pipe gallery. The circumferential direction is gradually reduced; the wedge-shaped structure consists of a horizontally extending straight upper surface (its maximum width is L _a , and its minimum width is L _b ), left and right sides symmetrical and extending and intersecting at acute angles (its 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 ridge-shaped lower surface is composed together, and the ridge-shaped lower surface has 5 on both sides of the midline. ° ~ 10 ° slope (at the maximum width, the slope is at an angle of α with the vertical; at the minimum width, the slope is at an angle of β with the vertical).

Through the above concept, when performing assembly, the left and right sides and the ridge-shaped lower surface of the corner bundle section can be coated with adhesive first, and then the pipe sections to be assembled on both sides of the to-be-assembled pipe section are paired with respect to this connector. A connection is made, whereby the bonding is performed between the annular sockets in contact with the pipe section of the pipe gallery using the wedge-like structure. On the one hand, the slope design of the end face of the connector and the pipe section of the pipe gallery 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 connection can still be performed smoothly, and it is ensured that the entire pipe gallery after the final assembly can obtain a reliable sealing connection.

In addition, according to the preferred embodiment of the present invention, the key dimension parameters of the above-mentioned corner bundle are also designed as follows: the maximum width, that is, the maximum distance from left to right of the flat upper surface, is 40mm to 80mm, and the minimum width is The minimum distance from left to right of the straight upper surface is 30mm˜50mm. More practical tests show that the above size parameters can achieve a good balance between the final sealing performance and the amount of materials used, and at the same time facilitate the processing of various types of bamboo composite pipe gallery straight pipes.

Figures 3 and 4 respectively show a cross-sectional view and a perspective view of the structure after the above-mentioned bundles are fitted and installed between two pipe gallery pipe sections by means of a corner connection. As shown in the figure, the surface of the two pipe gallery pipe sections after assembly is basically smooth, and can be used well with the pipe gallery pipe sections made of bamboo composite materials. It can perform the sealing connection between a large number of pipe sections, and can ensure the quality and performance stability in a long-term use environment, so it is especially suitable for the sealing connection application between the bamboo composite pipe gallery pipe sections.

Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.

Claims (4)

1. A structure in which the corner bundles are fitted and installed between two pipe gallery sections by corner connection. The pipe gallery sections are in the form of straight pipes with a length of L ₀ and an outer and inner diameter of Ф ₀ and D ₀ respectively. The ends are uniformly pre-machined with annular sockets; the end of the straight pipe is first cut off the pipe wall with a height of h ₂ along the vertical direction, and then formed into a length of d ₂ and a slope of 5 along the downward sloping direction. °～10° slope, and keep the thickness of the pipe wall at both ends as h ₃ ; For each pipe gallery section, it includes an inner lining layer and a structural layer adjacent to each other along the radial direction, wherein the inner lining layer is made of a non-woven fabric impregnated with adhesive, and forms a smooth and Impermeable inner wall; the structural layer is formed by multi-layer winding of a bamboo strip curtain adhered with a water-soluble resin and wrapped with a mesh cloth and cured outside the inner lining layer, and the bamboo strip curtain is formed by a plurality of bamboo strips passing through The curtain-like structure composed of braided wires, the radial tensile strength of the bamboo strips is set to 80±20MPa, and the bamboo fiber content is 40%±5%, and the moisture content is 10%±2%; The bamboo strip curtain of the structural layer includes a circumferential bamboo strip curtain and an axial bamboo strip curtain, the tensile strength of the annular bamboo strip curtain is 1500±100N, and the tensile strength of the axial bamboo strip curtain is 200±100N 20N, the non-woven fabric of the inner lining layer is a bamboo fiber non-woven fabric, wherein the bamboo fiber content is greater than or equal to 98%, the surface density is 40g/m ² ~ 50 g/m ² , and the moisture content is 8% ~ 15% , is characterized in that, the corner bundle joint is integrally fitted and installed at the annular sockets reserved at the respective ends of the adjacent two pipe gallery pipe sections, and is integrally fitted and installed at the end of the pipe gallery pipe section to form a ring; The cross-section of the joint part of the corner bundle is a wedge-shaped structure, and the wedge-shaped structure is composed of a horizontally extending flat upper surface, left-right symmetrical left and right sides that extend and intersect as acute angles, and a ridged lower surface that is also left-right symmetrical. composition, the left and right sides of the wedge-shaped structure and the straight upper surface can still smoothly perform the connection under the condition of the corners between the straight pipes to be assembled, and the ridge-shaped lower surface is along both sides of the midline. With a slope of 10°, one side of the ridged lower surface of the corner bundle section is complementary to the annular socket reserved at the end of the pipe gallery pipe section to enhance the friction between the corner bundle section and the pipe gallery section. In addition, The width of the corner bundle section decreases gradually along the circumferential direction of the pipe gallery section. The heights of the left side corresponding to the maximum width are t ₁ and the heights of the left side corresponding to the minimum width are t ₂ ; In addition, the outer sides of the corner bundles are also wrapped with bamboo fibers, thereby further enhancing its sealing performance. 2. The structure in which the corner bundle section is fitted and installed between two pipe gallery pipe sections with the corner connection as claimed in claim 1, wherein the left and right side surfaces of the corner bundle section and the ridged lower surface are Adhesive is applied, whereby the bonding is performed between said annular sockets in contact with the pipe section of the pipe gallery. 3. the structure that the corner bundle section is fitted and installed between two pipe gallery pipe sections with the corner connection as claimed in claim 1 or 2, it is characterized in that, the dimension parameter of described corner bundle section is designed as follows: its maximum width is also That is, the maximum distance from left to right of the flat upper surface is 40mm-80mm, and the minimum width, that is, the minimum distance from left to right of the flat upper surface is 30mm-50mm. 4. The structure for fitting and installing a corner bundle section between two pipe gallery pipe sections by using a corner connection as claimed in claim 1, wherein the corner bundle section sequentially includes an inner protective layer along its thickness direction from inside to outside , Bamboo winding reinforcement layer and outer protective layer, wherein the inner protective layer is made by curing the non-woven fabric impregnated with adhesive, and forms a smooth and impermeable inner wall; this bamboo winding reinforcement layer is made of adhered water-soluble resin The bamboo strips are wound around the inner protective layer and cured; the outer protective layer is at the outermost side and has anti-aging and waterproof functions.

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