WO2017071111A1 - Underground pipe gallery protection structure - Google Patents

Abstract

An underground pipe gallery protection structure comprising two cement-soil mixing pile walls (1) arranged opposite each other. The cement-soil mixing pile walls (1) are formed by several cement-soil mixing piles connected with each other in the radial direction. An underground pipe gallery accommodating cavity (2) is formed between the two cement-soil mixing pile walls (1).

Description

Underground pipe gallery protection structure Technical field

The invention belongs to the technical field of construction and relates to an underground pipe gallery protection structure, which is suitable for protecting an underground pipe gallery.

Background technique

The underground pipe gallery, also known as the common ditch, is a municipal public facility that implements unified planning, design, construction, and maintenance, and is built underground in the city for laying municipal public pipelines. It refers to a public tunnel used for centralized laying of municipal, pipelines such as electricity, communications, radio and television, water supply, drainage, heat, and gas in underground cities.

As early as the 1920s, the Tokyo Metropolitan Government of Japan, under the main roads in the Jiu Duan area of the city center, concentrated the pipelines of electricity, telephone, water supply and gas to form the first underground integrated pipe gallery in Tokyo. Since then, the "Special Measures for the Construction of Common Ditch", enacted in 1963, has stipulated at the legal level that the relevant Japanese departments need to build a "common ditch" in the main trunk roads with large traffic volume and possible future congestion. The National Highway Office of the Ministry of Land, Infrastructure, Transport and Tourism is responsible for the construction and management of the underground integrated pipe gallery in the Tokyo area. The underground integrated pipe gallery of the secondary line is under the responsibility of the Tokyo Metropolitan Construction Bureau.

As early as 1958, Beijing laid a comprehensive pipe gallery of more than 1,000 meters under Tiananmen Square. In 2006, the second modern integrated corridor in mainland China was built in the West District of Zhongguancun. The main line of the integrated pipe gallery is 2 kilometers long and the branch line is 1 kilometer long, including municipal pipelines such as water, electricity, cold, heat, gas and communication. In 1994, the Shanghai Municipal Government planned and built the first largest and longest integrated pipe gallery in the mainland, the Zhangyang Road Comprehensive Pipe Gallery in Pudong New Area. The comprehensive pipe gallery has a total length of 11.125 kilometers and houses four urban pipelines such as water, electricity, information and gas. Shanghai has also built a comprehensive underground corridor system for the demonstration underground complex pipe corridor project of Songjiang New Town (Phase I) and Anting New Town in Jiading District with a total length of about 6 kilometers. After 10 years of development, the infrastructure construction of Suzhou Industrial Park jointly developed by China and Singapore has begun to take shape.

The State Council attaches great importance to the promotion of the construction of urban underground integrated pipe corridors. Since 2013, it has issued the "Opinions of the State Council on Strengthening Urban Infrastructure Construction" and the "Guiding Opinions of the General Office of the State Council on Strengthening the Management of Urban Underground Pipelines". Pilot work on the construction of the pipe gallery.

The Chinese patent document discloses an integrated underground pipe gallery with a compensating device [Application No.: 201410559745.1], comprising a plurality of pipe joint sealing strips and a plurality of pipe joint units connected end to end, the pipe joint sealing strips being arranged adjacent to each other Between the pipe joint units, the pipe joint unit includes a pipe joint and a plurality of pipes arranged in parallel, and the pipe is disposed on a bottom surface of the pipe joint through a fixing seat, and the pipe joints are respectively provided at both ends of the pipe joint a pipe joint telescopic connecting pipe having a shape of a pipe joint, wherein the pipe ends are respectively provided with a pipe expansion joint pipe, and the pipe joint expansion pipe is provided with a flange one end away from the pipe joint, the pipe A flange 2 is disposed at one end of the telescopic connecting pipe away from the pipe. The above solution effectively reduces the difficulty of construction and installation, improves the installation efficiency of the pipe gallery and the pipeline, saves a lot of construction time and cost, and at the same time, the prefabricated pipe joint has large bearing capacity and good compression resistance. However, the protective effect of the soil around the pipe gallery on the pipe gallery is ignored.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide an underground pipe gallery protection structure for protecting an underground pipe gallery in response to the above problems.

In order to achieve the above object, the present invention adopts the following technical solutions: an underground pipe gallery protection structure, comprising two opposite cement soil mixing pile walls, the cement soil mixing pile wall is made of a plurality of cement soil mixing piles in the radial direction Interconnected, two underground soil mixing pile walls form an underground pipe gallery receiving cavity.

In the above-mentioned underground pipe gallery protection structure, the two cement-soil mixing pile walls are respectively provided with a plurality of prefabricated piles on the side close to the underground pipe gallery accommodating cavity, and the prefabricated piles are closely attached to the cement soil mixing pile wall.

In the above-mentioned underground pipe gallery protection structure, the prefabricated piles are connected to each other in the radial direction to form a prefabricated pile wall having the same length as the cement soil mixing pile wall.

In the above-mentioned underground pipe gallery protection structure, the prefabricated pile is provided with a concave-convex engaging mechanism, and the adjacent pre-formed piles are closely adhered to each other through the concave-convex engaging mechanism.

In the underground pipe gallery protection structure, the concave-convex engaging mechanism includes a protrusion extending outside the pre-pile and a recess recessed into the interior of the pre-pile, the shape of the protrusion and the recess It is sized to fit two adjacent prefabricated piles in close contact.

In the above-mentioned underground pipe gallery protection structure, the prefabricated pile is provided with a longitudinal reinforcing rib and a lateral reinforcing rib, and the lateral reinforcing rib is adjacent to the end of the underground pipe arranging cavity and has an energy and an underground pipe gallery. The connecting member is connected to the rib connecting mechanism.

In the above-mentioned underground pipe gallery protection structure, the rib connecting mechanism includes a connecting nut located inside the prefabricated pile and fixedly connected to the end of the lateral rib, and the connecting nut has an internal thread.

In the above-described underground pipe gallery protection structure, the rib connection mechanism includes a connection end extending outside the precast pile.

In the above-mentioned underground pipe gallery protection structure, the connecting end is fixed with a connecting nut, or the end of the connecting end has a collar protruding outward in the radial direction of the connecting end, or the connecting end is bent After folding, a hook is formed.

In the above-mentioned underground pipe gallery protection structure, the prefabricated pile has a connecting portion protruding to the outside of the precast pile, and the connecting portion is inserted into the cement soil mixing pile wall and fixedly connected with the cement soil mixing pile wall.

Compared with the prior art, the invention has the advantages that the cement soil mixing pile wall plays a role in hardening and strengthening the soil around the underground pipe gallery, and plays a horizontal positioning of the pipe gallery, and the prefabricated pile and the cement soil mixing pile wall become The integrated structure further strengthens the soil around the underground pipe gallery; in addition, the prefabricated piles and the underground pipe gallery are connected by the rib connection mechanism to prevent the settlement of the underground pipe gallery.

DRAWINGS

Figure 1 is a schematic view of the structure provided by the present invention;

Figure 2 is a schematic diagram of the present invention;

Figure 3 is a schematic cross-sectional view of a precast pile;

Figure 4 is a schematic cross-sectional view of another precast pile;

Figure 5 is a schematic cross-sectional view of another precast pile;

Figure 6 is a schematic cross-sectional view of another precast pile;

Figure 7 is a schematic cross-sectional view of another precast pile;

Figure 8 is a schematic cross-sectional view of another precast pile;

Figure 9 is a schematic cross-sectional view of another precast pile;

Figure 10 is a schematic cross-sectional view of another precast pile;

Figure 11 is an enlarged view of A of Figure 1;

Figure 12 is an enlarged view of B of Figure 1;

Figure 13 is an enlarged view of a portion C of Figure 1;

Figure 14 is an enlarged view of D of Figure 1;

Figure 15 is an enlarged view of E at Figure 2.

In the figure: cement soil mixing pile wall 1, underground pipe gallery receiving cavity 2, prefabricated pile 3, concave and convex locking mechanism 4, protruding portion 5, recessed portion 6, longitudinal reinforcing rib 7, transverse reinforcing rib 8, reinforcing rib The connecting mechanism 9, the connecting nut 10, the connecting end 11, the collar 12, the hook 13, the connecting portion 14, the underground pipe gallery 100, the connecting rib 101, and the soil layer 102.

detailed description

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

As shown in FIG. 1 , an underground pipe gallery protection structure includes two opposite cement soil mixing pile walls 1 located in the soil layer 102, and the cement soil mixing pile wall 1 is formed by a plurality of cement soil mixing piles. Connected to each other, there is no gap between the cement-soil mixing piles, and an underground pipe gallery accommodating cavity 2 is formed in the middle of the two cement-soil mixing pile walls 1, as shown in Fig. 2, the underground pipe gallery 100 is placed in the underground pipe gallery In the chamber 2, the underground pipe gallery 100 may be cast in the underground pipe gallery accommodating chamber 2, or may be prefabricated into various shapes of pipes and then placed into the underground pipe porch accommodating chamber 2. It should be understood by those skilled in the art that according to the shape of the underground pipe gallery 100, the shape of the cement-soil mixing pile wall 1 should be changed accordingly. Therefore, the two cement-soil mixing pile walls 1 are not necessarily parallel, and may be curved, or The distance between the two cement-soil mixing pile walls 1 is adjusted according to the width of the underground pipe gallery 100.

The cement soil mixing pile is made by the prior art and is a method for reinforcing the low foundation of the saturated soft clay. It uses cement as a curing agent, and the soft soil and the curing agent are forced in the depth of the foundation through a special mixing machine. Stirring, using a series of physical and chemical reactions between the curing agent and the soft soil, the soft soil is hardened into a high-quality foundation with integrity, water stability and a certain strength. The Chinese patent No. [201210445899.9] provides a six-axis cement-soil mixing pile. When six cement-soil mixing piles are formed at the same time, seamless joints can be achieved, and the joint formed by the original single-shaft or two-shaft cement-soil mixing pile can be reduced. Improve water stopping effect and construction efficiency and reduce labor consumption.

Two cement soil mixing pile walls 1 are respectively provided with a plurality of prefabricated piles 3 on one side of the underground pipe gallery accommodating chamber 2, and the prefabricated piles 3 are closely attached to the cement soil mixing pile wall 1. The prefabricated piles 3 may be spaced apart on the side of the cement soil mixing pile wall. In the present embodiment, the precast piles 3 are connected to each other in the radial direction to form a prefabricated pile wall having the same length as the cement soil mixing pile wall 1, thereby prefabricating The pile wall and the cement-soil mixing pile wall 1 form an integrated structure, and the underground pipe gallery 100 inside the underground pipe arranging cavity 2 has a stronger and reliable protection effect.

As shown in FIG. 3, the precast pile 3 is provided with a concave-convex engaging mechanism 4, and the adjacent precast piles 3 are closely adhered to each other by the concave-convex engaging mechanism 4, thereby forming an integrated prefabricated pile wall. The concave-convex engaging mechanism 4 includes a projection 5 extending outside the precast pile 3 and a recessed portion 6 recessed into the interior of the precast pile 3, the projection 5 being adapted to the shape and size of the recessed portion 6 to enable Two adjacent precast piles 3 are brought into close contact with each other.

As for the cross-sectional shape of the precast pile 3, the embodiment is not limited. As shown in FIG. 3 and FIG. 4, the cross section of the precast pile 3 is triangular, as shown in FIG. 5, FIG. 6, and FIG. As a polygon, as shown in Fig. 7, the precast pile 3 has a T-shaped cross section, and as shown in Figs. 9 and 10, the precast pile 3 has a circular cross section.

As shown in FIG. 4, FIG. 5 and FIG. 10, the prefabricated pile 3 has a connecting portion 14 projecting to the outside of the prefabricated pile 3, and the connecting portion 14 is inserted into the cement-soil mixing pile wall 1 and is mixed with the cement-soil mixing pile wall. 1 fixed connection. In addition, as shown in Figure 7 The T-pillar shown can be inserted into the cement-soil mixing pile wall 1 and fixedly connected thereto.

As shown in FIG. 1 , the prefabricated pile 3 is provided with a longitudinal reinforcing rib 7 and a lateral reinforcing rib 8 , which are combined with FIGS. 11-14 , and the transverse reinforcing rib 8 is adjacent to the end of the underground pipe gallery accommodating cavity 2 . There is a rib connection mechanism 9 that can be connected to a connector in the underground pipe gallery.

As shown in Fig. 11, the rib connecting mechanism 9 includes a coupling nut 10 which is located inside the precast pile 3 and is fixedly coupled to the end of the lateral rib 8, and the coupling nut 10 has an internal thread.

As shown in Figure 1, the rib attachment mechanism 9 includes a connection end 11 that extends out of the exterior of the precast pile 3. As shown in FIG. 12, a coupling nut 10 is fixed to the connecting end 11. As shown in FIG. 13, the end of the connecting end 11 has a collar 12 projecting outward in the radial direction of the connecting end 11, as shown in FIG. The connecting end 11 is bent to form a hook 13 . As shown in FIG. 2, when there is a lateral connecting rib 101 in the inner lower pipe gallery 100, as shown in FIG. 15, the connecting end 11 can overlap, snap or screw the connecting ribs 101 of the underground pipe gallery 100. Thus, the precast pile 3 and the underground pipe gallery 100 form an interaction in the horizontal direction to prevent the underground pipe gallery 100 from settling.

It should be understood by those skilled in the art that the material of the longitudinal reinforcing rib 7, the lateral reinforcing rib 8, the connecting rib 101, and the like may be steel bars, steel bars, steel strands, chemical profiles such as carbon fibers, and the like.

The specific embodiments described herein are merely illustrative of the spirit of the invention. A person skilled in the art can make various modifications or additions to the specific embodiments described or in a similar manner, without departing from the spirit of the invention or as defined by the appended claims. The scope.

Claims (10)

The utility model relates to an underground pipe gallery protection structure, which is characterized in that it comprises two opposite cement soil mixing pile walls (1), and the cement soil mixing pile wall (1) is connected to each other by a plurality of cement soil mixing piles in a radial direction. In the middle, two cement soil mixing pile walls (1) form an underground pipe gallery receiving cavity (2). The underground pipe gallery protection structure according to claim 1, wherein the two cement-soil mixing pile walls (1) are respectively provided with a plurality of prefabricated piles on one side of the underground pipe gallery receiving cavity (2) ( 3) The precast pile (3) is in close contact with the cement soil mixing pile wall (1). The underground pipe gallery protection structure according to claim 2, characterized in that the precast piles (3) are radially connected to each other to form a prefabricated pile wall having the same length as the cement soil mixing pile wall (1). The underground pipe gallery protection structure according to claim 2, wherein the prefabricated pile (3) is provided with a concave-convex engaging mechanism (4), and the adjacent prefabricated piles (3) pass through the concave-convex engaging mechanism ( 4) Close to each other. The underground pipe gallery protection structure according to claim 4, wherein the concave-convex engaging mechanism (4) comprises a protrusion (5) extending to the outside of the precast pile (3) and a prefabricated pile (3) The recessed recess (6), the projection (5) is adapted to the shape and size of the recess (6) so that two adjacent precast piles (3) can be brought into close contact. The underground pipe gallery protection structure according to claim 2, wherein the precast pile (3) is provided with a longitudinal reinforcing rib (7) and a lateral reinforcing rib (8), and the transverse reinforcing rib ( 8) The end of the accommodating chamber (2) adjacent to the underground pipe gallery has a rib connection mechanism (9) connectable to the connecting member in the underground pipe gallery. The underground pipe gallery protection structure according to claim 6, characterized in that the rib connection mechanism (9) comprises a connection inside the precast pile (3) and fixedly connected to the end of the lateral rib (8) The nut (10), the connecting nut (10) has an internal thread. The underground pipe gallery protection structure according to claim 6, characterized in that the rib connection mechanism (9) comprises a connection end (11) extending outside the precast pile (3). The underground pipe gallery protection structure according to claim 8, characterized in that the connecting end (11) is fixed with a connecting nut (10), or the end of the connecting end (11) has a connecting end The radially outwardly projecting collar (12) of (11) or the connecting end (11) is bent to form a hook (13). The underground pipe gallery protection structure according to claim 2, characterized in that the prefabricated pile (3) has a connecting portion (14) protruding to the outside of the prefabricated pile (3), and the connecting portion (14) Inserted into the cement soil mixing pile wall (1) and fixedly connected with the cement soil mixing pile wall (1).

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