CN106337436A - Rectangular concrete comprehensive pipe gallery prefabricated pipe sections and machining method - Google Patents

Abstract

The invention relates to a prefabricated segment of a rectangular concrete comprehensive pipe gallery, which belongs to the field of construction technology. The waterproof structure is retained, and the segments can be spliced into two forms of A and B to realize the staggered joint connection. The effect and advantage of the invention is that the structure is simple, and only three types of segments are needed to complete the entire component, which reduces the production of molds in the early stage. The cost can be greatly reduced; the waterproof effect is good, the application is wide, and it is suitable for open-cut construction and shield construction; the construction is convenient and the construction speed is fast, and complex operations in the construction process are avoided, and the cost can be greatly reduced.

Description

Prefabricated segment and processing method of rectangular concrete comprehensive pipe gallery

technical field

The invention belongs to the technical field of construction, in particular to a prefabricated segment of a rectangular concrete comprehensive pipe gallery.

Background technique

The concept of building underground pipeline integrated utility corridors in cities originated in Europe in the 19th century and first appeared in France. Since the birth of the world's first comprehensive underground pipeline system in Paris in 1833, it has been nearly 182 years of development. After a hundred years of exploration, research, improvement and practice, its technical level has fully matured, and has been greatly developed in many foreign cities, and has become a modern symbol of municipal construction management in developed cities abroad and a part of urban public management.

The underground comprehensive pipe gallery system not only solves the problem of urban traffic congestion, but also greatly facilitates the maintenance and repair of municipal facilities such as electricity, communications, gas, water supply and drainage. In addition, the system also has a certain effect of earthquake prevention and disaster reduction. For example, during the Great Hanshin Earthquake in Japan in 1995, a large number of houses collapsed and roads were destroyed in Kobe City, but most of the local underground utility tunnels remained intact, which greatly reduced the difficulty of disaster relief and reconstruction work after the earthquake. The underground comprehensive utility corridor plays an important role in meeting the basic needs of people's livelihood and improving the comprehensive carrying capacity of the city.

The construction of the comprehensive pipe gallery avoids the impact and interference on traffic and residents’ travel caused by frequent excavation of roads for laying and maintenance of underground pipelines, and maintains the integrity and beauty of the road capacity. It reduces the cost of multiple renovations of the road surface and the maintenance cost of engineering pipelines. Maintain the integrity of the road surface and the durability of various pipelines. It is convenient for the laying, increase and decrease, maintenance and daily management of various pipelines. The layout of pipelines in the comprehensive utility gallery is compact and reasonable, which effectively utilizes the space under the road and saves urban land. The poles of the road and the inspection wells and chambers of various pipelines are reduced, and the urban landscape is beautiful. The overhead pipelines go into the ground together to reduce the conflict between overhead lines and greening.

The construction of comprehensive pipe corridors in China started relatively late. Before the reform and opening up, generally only some pipeline corridors were set up in the underground space of large public buildings or in large industrial enterprises as needed, or only comprehensive cable trenches mainly for weak currents were simply placed. The first comprehensive municipal pipe corridor in China appeared in 1994. According to the planning requirements of high-level development and construction of Pudong New Area, after collecting necessary technical data and conducting research on related topics, the first domestic pipe gallery was built on Zhangyang Road, Pudong New Area, Shanghai. A large-scale comprehensive pipe gallery. The comprehensive pipe gallery has a total length of about 11km and is buried under the sidewalks on both sides of the road. The comprehensive pipe gallery is a reinforced concrete structure with a rectangular cross-section. It consists of two parts: a gas chamber (a separate room, where gas pipelines are laid) and a comprehensive room (where various communication, power and water pipes are laid). According to the needs of the operation and management of the comprehensive utility corridor, the auxiliary facility system of the comprehensive utility corridor on Zhangyang Road includes fire protection, ventilation, drainage, power supply and lighting, monitoring management and information collection and processing systems in the comprehensive utility corridor.

In recent years, the construction standards of municipal infrastructure have been continuously improved all over the country, and the construction of comprehensive utility corridors has been explored to achieve intensive use and sustainable development of municipal road underground space. Zhongguancun in Beijing, University City in Guangzhou, Anting New Town in Shanghai, Jinan, Ningbo, Shenzhen, Kunming, Nanning, Harbin, Hefei, Jiamusi and other large and medium-sized cities have completed or are preparing to construct comprehensive utility corridors. Among them, Guangzhou University City and Shanghai Anting New Town have learned from the experience and lessons of the construction of comprehensive pipe corridors on Zhangyang Road in Pudong, and on the basis of drawing on the more mature design standards in Japan and other countries, they have built relatively large-scale projects with a total length of 17 km and 6 km respectively. The multi-storey or single-storey comprehensive pipe corridor system has been gradually put into use.

On August 10, 2015, the General Office of the State Council announced the Guiding Opinions on Promoting the Construction of Urban Underground Comprehensive Pipe Gallery (Guobanfa [2015] No. 61). The goal is to build a number of internationally advanced underground comprehensive pipeline corridors and put them into operation by 2020. The problem of "road zippers" caused by repeated excavation of the ground has been significantly improved, the safety level of pipelines and the ability to prevent and resist disasters have been significantly improved, and the main Street spider web-like overhead lines, the city's ground landscape has improved significantly.

Contents of the invention

With the development of comprehensive utility tunnels and the need for renovation of old lines, the construction environment and conditions of comprehensive utility tunnels are becoming more and more complex. The current large-scale use of open cut and cast-in-place methods can no longer meet the needs of complex environments. The invention proposes a new segment prefabrication method, which is suitable for open-cut construction and shield construction. The segments of the invention can be industrially prefabricated in a factory and transported to the site for assembly. There is no need for complex processes such as formwork, pouring, and maintenance, which greatly improves the efficiency of construction and saves time and economic costs.

The technical scheme that the present invention adopts is as follows:

A prefabricated segment of a rectangular concrete comprehensive pipe gallery, characterized in that it includes an L-shaped component with a long-end bevel and a short-end chamfer, an in-line prefabricated component, and a long-end chamfer and a short-end bevel L-shaped component;

The two ends of the long-end bevel short-end chamfer L-shaped member and the long-end bevel short-end L-shaped member are respectively prefabricated with chamfered joints and grooved joints, and both ends of the inline prefabricated components are prefabricated with beveled joints ;

With a piece of one-shaped prefabricated component as the base, one end of the prefabricated groove of the L-shaped component with long end bevel and short end bevel, and the prefabricated bevel of the L-shaped component with long end bevel and short end bevel are connected to it, and the long end beveled and short end vertically The prefabricated chamfer interface of L-shaped components with grooves and short-end chamfered L-shaped components with long-end grooves and the prefabricated chamfers of the above-mentioned long-end The corner interface is connected, and the top is overlapped with the long-end bevel short-end chamfer L-shaped member and the long-end chamfer short-end L-shaped member with a straight prefabricated member to form a closed rectangular comprehensive pipe corridor. The segment bolts are used to connect and fix the ring through the reserved holes.

The long-end bevel short-end chamfer L-shaped member, the long-end chamfer short-end bevel L-shaped member and the in-line prefabricated member are respectively provided with longitudinal splicing bolt reserved holes and circumferential splicing bolts at both ends of the interface. There are reserved holes for bolts, and the two ends of the joint are respectively provided with a circumferential waterproof caulking groove and a circumferential waterproof elastic gasket groove. In the future, caulking will be done for waterproofing.

The long-end bevel short-end chamfer L-shaped member, the long-end chamfer short-end bevel L-shaped member and the in-line prefabricated member are all made of waterproof concrete, which are respectively spliced into A and B-shaped cross-sections. When splicing, the A-shaped section and the B-shaped section are alternately spliced to form a staggered seam structure, and waterproof gaskets are installed at the seams.

The gasket is a composite gasket made of EPDM elastic rubber and water-swellable rubber.

The processing method of the prefabricated segment of the rectangular concrete comprehensive pipe gallery of the present invention is:

1) Determine the size of the pipe gallery

Determine the cross-sectional size of the comprehensive pipe gallery according to the plan, and determine the thickness of the pipe wall. And through the thickness of the pipe wall and the size of the pipe gallery, the specification of the connecting piece and the size of the reserved hole are determined;

2) Determine the interface size

According to the size of the section of the pipe gallery and the stress of the pipe gallery, determine the size of the prefabricated chamfer interface and the size of the prefabricated groove interface;

3) Determine the size of the elastic gasket groove and caulking groove

According to the thickness of the pipe wall and the natural conditions of the pipe gallery, determine the size of the elastic gasket groove and caulking groove;

4) Correction assembly

The segments processed in step 2 are transported to the site for assembly. When the segments are spliced, they can be spliced into A-type (B-type) cross-section joints, or the A-type and B-type cross-sections can be separated to form staggered seams connect. When splicing, use a one-shaped prefabricated component as the base, and connect one end of the prefabricated groove with the long-end chamfer short-end chamfer L-shaped component 1 and the long-end chamfer short-end L-shaped component 3 respectively, vertically Respectively use the prefabricated chamfering interface of the long-end chamfer short-end bevel L-shaped member 3 and the long-end bevel short-end chamfer L-shaped member 1 and the above-mentioned long-end bevel short-end chamfer L-shaped member 1, long-end chamfer The prefabricated chamfer interface connection of the L-shaped component 3 with the bevel at the short end of the corner. Carry out lap joint capping with a piece of inline prefabricated component 2 then. Finally, the segment bolts are used to pass through the reserved holes to fix the segments together to form a ring, and the rings are connected and fixed with the segment bolts through the reserved holes.

Beneficial effects of the present invention:

The present invention adopts A-shaped section and B-shaped section to be spliced alternately to form a staggered seam structure, which is beneficial to waterproof and longitudinal force, and a waterproof elastic gasket groove and caulking groove are respectively reserved at the seams to strengthen waterproofing. The structure of the present invention is simple , Good waterproof effect, wide application range, convenient construction, fast construction speed, good economic effect, avoiding complicated operations in the construction process, and can greatly reduce the cost.

Description of drawings

Fig. 1 is the A-shaped section of the prefabricated segment of the rectangular concrete comprehensive pipe gallery of the present invention.

Fig. 2 is a B-shaped section of the prefabricated segment of the rectangular concrete comprehensive pipe gallery of the present invention.

Fig. 3 is an L-shaped member of the long-end bevel and short-end chamfer of the prefabricated segment of the rectangular concrete comprehensive pipe gallery of the present invention.

Fig. 4 is an in-line prefabricated component of the prefabricated segment of the rectangular concrete comprehensive pipe gallery of the present invention.

Fig. 5 is an L-shaped member of the long-end chamfer and short-end bevel of the prefabricated segment of the rectangular concrete comprehensive pipe gallery of the present invention.

Fig. 6 is a right side view of Fig. 1 cut along the vertical direction in the middle of the horizontal direction.

Fig. 7 is a top view of Fig. 1 cut along the horizontal direction in the middle of the vertical direction.

Fig. 8 is a detailed view of the connection between the long end bevel and the short end chamfer L-shaped component of the present invention and the prefabricated bevel interface of the inline prefabricated component.

Fig. 9 is a detailed view of the connection between the in-line prefabricated component and the prefabricated groove interface of the long-end chamfered short-end L-shaped component of the present invention.

Fig. 10 is a detailed view of the connection between the L-shaped member with long end bevel and short end bevel and the prefabricated chamfer interface of the L-shaped member with long end bevel and short end bevel according to the present invention.

In the figure, 1 is an L-shaped member with long-end bevel and short-end chamfer; 2 is a straight prefabricated member; 3 is an L-shaped member with long-end chamfer and short-end bevel; 4 is a reserved hole for longitudinal splicing bolts; 5 is Circular waterproof caulking groove; 6 is the circumferential waterproof elastic sealing gasket groove; 7 is the longitudinal waterproof caulking groove; 8 is the longitudinal waterproof elastic sealing gasket groove; 9 is the reserved hole for the circumferential splicing bolt.

detailed description

The present invention is described in detail below in conjunction with accompanying drawing and embodiment:

As shown in the figure, the technical scheme adopted by the present invention is as follows:

The prefabricated segment of the rectangular concrete integrated pipe gallery is characterized in that it includes an L-shaped member 1 with a long-end bevel and a short-end chamfer, an in-line prefabricated member 2, and a long-end chamfer and a short-end bevel L-shaped member 3;

The two ends of the long-end bevel short-end chamfer L-shaped member 1 and the long-end bevel short-end L-shaped member 3 are prefabricated with a chamfer interface and a groove interface respectively, and both ends of the inline prefabricated member 2 are prefabricated Groove interface;

With a piece of one-shaped prefabricated component 2 as the base, one end of the prefabricated groove of the long-end bevel short-end chamfer L-shaped component 1 and the long-end chamfer short-end L-shaped component 3 is connected to it, and the long end is inverted vertically. The prefabricated chamfering interface of the L-shaped member 3 with the short-end bevel and the long-end bevel and the short-end chamfer L-shaped member 1 is connected with the above-mentioned long-end bevel, short-end bevel L-shaped member 1, long-end chamfer and short-end bevel The prefabricated chamfer interface of the L-shaped component 3 is connected, and the top is overlapped with the one-shaped prefabricated component 2 and the long-end beveled short-end chamfered L-shaped component 1 and the long-end chamfered short-end beveled L-shaped component 3 respectively. A closed rectangular comprehensive pipe gallery is formed into a ring, and the rings are connected and fixed with segment bolts through reserved holes.

The L-shaped member 1 with long-end bevel and short-end bevel, the L-shaped member 3 with long-end bevel and short-end bevel, and the in-line prefabricated member 2 are respectively provided with longitudinal splicing bolt reserved holes 4 at both ends of the interface. and the reserved holes 9 for the circumferential splicing bolts, the two ends of the joint are respectively provided with a circumferential waterproof caulking groove 5 and a circumferential waterproof elastic gasket groove 6, the inner side of the component is provided with a longitudinal waterproof caulking groove 7, and the outer side is provided with The vertical waterproof elastic gasket groove 8 is used for caulking filling and waterproofing in the later stage.

The long-end bevel short-end chamfer L-shaped member 1, the long-end chamfer short-end bevel L-shaped member 3 and the in-line prefabricated member 2 are all made of waterproof concrete, and they are spliced into A and B types respectively. Cross-section, A-type cross-section and B-type cross-section are alternately spliced in longitudinal splicing to form a staggered seam structure, and waterproof gaskets are installed at the seams.

The gasket is a composite gasket made of EPDM elastic rubber and water-swellable rubber.

The processing method of the prefabricated segment of the rectangular concrete comprehensive pipe gallery of the present invention is:

1) Determine the size of the pipe gallery

Determine the cross-sectional size of the comprehensive pipe gallery according to the plan, and determine the thickness of the pipe wall. And through the thickness of the pipe wall and the size of the pipe gallery, the specifications of the connecting parts and the size of the reserved holes are determined.

2) Determine the interface size

According to the size of the section of the pipe gallery and the force of the pipe gallery, the size of the prefabricated chamfer interface and the size of the prefabricated bevel interface are determined.

3) Determine the size of the elastic gasket groove and caulking groove

According to the thickness of the pipe wall and the natural conditions of the pipe gallery, determine the size of the elastic gasket groove and caulking groove.

4) Correction assembly

The segments processed in step 2) are transported to the site for assembly. When the segments are spliced, they can be spliced into A-type (B-type) cross-section joints, or the A-type and B-type cross-sections can be separated to form a staggered Seam connection; when splicing, use a straight prefabricated component as the base, and use the long-end chamfer short-end chamfer L-shaped component 1 and the long-end chamfer short-end L-shaped component 3 to connect with one end of the prefabricated groove Vertically, the prefabricated chamfering interface of the long-end chamfer short-end bevel L-shaped member 3 and the long-end bevel short-end chamfer L-shaped member 1 and the above-mentioned long-end bevel short-end chamfer L-shaped member 1, Long-end chamfer short-end bevel L-shaped member 3 prefabricated chamfer interface connection. Then a piece of inline prefabricated component 2 is used for lap joint capping; finally, the segment bolts are used to fix the segments together through the reserved holes to form a ring, and the rings are connected and fixed with the segment bolts through the reserved holes.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (5)

1. a kind of Rectangular Concrete pipe gallery prefabricated pipe section it is characterised in that: include long hipped end mouth short end chamfering l type component, Yi word pattern prefabricated components and long chamfer short end groove l type component；

Prefabricated chamfering connects respectively for described long hipped end mouth short end chamfering l type component and long chamfer short end groove l type component two ends Mouth and groove interface, all prefabricated groove interface in yi word pattern prefabricated components two ends；

With a piece of yi word pattern prefabricated components as base, long hipped end mouth short end chamfering l type component, long chamfer short end groove l type structure Prefabricated groove one end of part is attached thereto, and vertically goes up long chamfer short end groove l type component and long hipped end mouth short end chamfering l type structure The prefabricated chamfering interface of part and above-mentioned long hipped end mouth short end chamfering l type component, long chamfer short end groove l type component prefabricated fall Corner connection mouth connect, top with yi word pattern prefabricated components respectively with long hipped end mouth short end chamfering l type component and long chamfer short end slope Mouth l type component overlap joint binds, and forms into a ring seal rectangle pipe gallery, between ring and ring with segment bolt by preformed hole even Connect fixation.

2. Rectangular Concrete pipe gallery prefabricated pipe section according to claim 1 is it is characterised in that described long hipped end mouth Short end chamfering l type component, long chamfer short end groove l type component and yi word pattern prefabricated components, are respectively arranged at two ends with vertical in interface To splice bolt preformed hole and ring splice bolt preformed hole, it is respectively arranged at two ends with ring waterproof filleting groove and ring in seam crossing Water-proof elastic gasket slot, is provided with longitudinal waterproof filleting groove inside component, outside is provided with longitudinal water-proof elastic gasket slot, in order to Later stage does filleting filling waterproof.

3. Rectangular Concrete pipe gallery prefabricated pipe section according to claim 1 is it is characterised in that described long hipped end mouth Short end chamfering l type component, long chamfer short end groove l type component and yi word pattern prefabricated components, are made by water-proof concrete, point It is not spliced into a, b amphitypy section, when longitudinal spliced, adopts a type section and b type section alternative splicing, form fissure of displacement structure, seam Place installs waterproof sealing gasket additional.

4. Rectangular Concrete pipe gallery prefabricated pipe section according to claim 3 is it is characterised in that described sealing gasket selects The composite gland bush made with epdm gum elastic and hydro-expansive rubber.

5. the processing method of Rectangular Concrete pipe gallery prefabricated pipe section according to claim 1 is:

1) determine tube lane dimension

Determine the sectional dimension of pipe gallery according to planning, determine the thickness of tube wall；

And pass through pipe thickness and tube lane dimension, determine that connector uses specification and the size of preformed hole；

2) determine interface size

Size according to piping lane section and piping lane stressing conditions, determine prefabricated chamfering interface size and prefabricated groove interface size；

3) elastic sealing gasket groove and filleting groove size are determined

Natural conditions according to residing for pipe thickness and piping lane, determine elastic sealing gasket groove and the size of filleting groove；

4) correction assembling

The section of jurisdiction that step 2 is processed is transported to Assembling, when splicing between section of jurisdiction, both can all be spliced into a type (b type) section and lead to Seam connect, also can will be spaced apart for a type b type section, formed the fissure of displacement connect；

During splicing, with yi word pattern prefabricated components as base, respectively with long hipped end mouth short end chamfering l type component 1, long chamfer The prefabricated groove one end of short end groove l type component 3 is attached thereto, vertical on use long chamfer short end groove l type component 3 respectively and grow The prefabricated chamfering interface of hipped end mouth short end chamfering l type component 1 is short with above-mentioned long hipped end mouth short end chamfering l type component 1, long chamfer The prefabricated chamfering interface of hipped end mouth l type component 3 connects；

Then carry out overlap joint with a piece of yi word pattern prefabricated components 2 to bind；

Finally by preformed hole, each section of jurisdiction is fixed together with segment bolt and forms a ring, passed through with segment bolt between each ring Preformed hole is connected.