CN113774961B - Waterproof method for underground gallery type structure jacking relay room - Google Patents

Waterproof method for underground gallery type structure jacking relay room Download PDF

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Publication number
CN113774961B
CN113774961B CN202110605387.3A CN202110605387A CN113774961B CN 113774961 B CN113774961 B CN 113774961B CN 202110605387 A CN202110605387 A CN 202110605387A CN 113774961 B CN113774961 B CN 113774961B
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rubber belt
waterproof rubber
face
type structure
waterproof
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CN113774961A (en
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王天野
许英杰
张志敏
谭志斌
蒋新建
王瑜
李雨均
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China MCC20 Group Corp Ltd
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China MCC20 Group Corp Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/045Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/16Arrangement or construction of joints in foundation structures

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Building Environments (AREA)

Abstract

The invention relates to the field of protection devices for preventing underground moisture or underground water for foundations or foundation structures, in particular to a waterproof method for jacking underground tunnel type structures into a relay room. A waterproof method for a underground gallery type structure jacking relay room is characterized by comprising the following steps: the method is implemented in sequence according to the following steps: firstly, manufacturing a waterproof rubber belt; installing a notch; and installing a waterproof rubber ring. The invention has reliable waterproof performance and wide application range.

Description

Waterproof method for underground gallery type structure jacking relay room
Technical Field
The invention relates to the field of protection devices for preventing underground moisture or underground water for foundations or foundation structures, in particular to a waterproof method for jacking underground tunnel type structures into a relay room.
Background
The underground gallery type structure is used as a form of underground space, and has strict requirements on the leakage prevention of the structure. Because its structure is the line type setting and the size is great, generally divide a plurality of district sections with it during engineering design, except that the structure outside sets up the coiled material waterproof layer, the waterproof of settlement joint or movement joint between each district section structure mainly adopts the rubber waterstop to predetermine when the structure is pour the construction, and the construction effect who obtains is also comparatively ideal. However, in actual construction, due to different construction conditions, the adopted construction methods are also different, typically, a jacking relay station is arranged during jacking construction of a gallery type structure, and due to jacking operation, the rubber water stop belt preset in the relay station for water prevention cannot be realized at all.
Disclosure of Invention
The invention discloses a method for waterproofing a jacking relay room of an underground gallery type structure, which aims to overcome the defects of the prior art and provide a structure construction method with reliable waterproof performance and wide application range.
The invention achieves the purpose by the following technical scheme:
a waterproof method for a underground gallery type structure jacking relay room is characterized by comprising the following steps: the method is implemented in sequence according to the following steps:
manufacturing a waterproof rubber belt:
the waterproof rubber belt is made of rubber, the cross section of the waterproof rubber belt, namely the section vertical to the central axis of the waterproof rubber belt, is in a ring shape, the longitudinal section of the waterproof rubber belt, namely the upper half part and the lower half part of the section passing through the central axis of the waterproof rubber belt, is in axial symmetry by taking the central axis of the waterproof rubber belt as a symmetry axis, the upper half part of the longitudinal section of the waterproof rubber belt is composed of a base strip, an upper convex block and a lower convex block, the upper convex block is sequentially fixed in the middle of the top surface of the base strip, and the lower convex block is sequentially fixed in the middle of the bottom surface of the base strip;
installing a notch:
the notch comprises four straight line sections and four circular arc sections, wherein the two straight line sections and the four circular arc sections are perpendicular to each other and are smoothly connected through the circular arc sections so as to be spliced into a rounded rectangle, and the cross sections of the two straight line sections and the two circular arc sections are in a shape like a Chinese character 'ji', namely the cross sections consist of concave groove parts and flanges at two sides of an opening of the groove parts;
the method comprises the following steps of: adhering and fixing a wood base plate on the end surface of the gallery structure, abutting and supporting the wood base plate by using wood ridges, arranging grooves matched with the notches on the end surface of the gallery structure and the wood base plate, inserting wood pads into the grooves of the notches, embedding the grooves into the grooves, adhering the flanges of the notches to the wood base plate respectively, and fixing the flanges on the wood base plate by using screws;
installing a waterproof rubber ring:
establish the corridor formula structure of two relative settings and be A corridor formula structure and B corridor formula structure respectively, and two terminal surfaces of establishing waterproof rubber area are a face and B face respectively, clear up the slot part of notch in two corridor formula structures, the cap is established to the B face cover in waterproof rubber area, make the a face of waterproof rubber area aim at the slot part of A corridor formula structure terminal surface department notch, strike the cap of B face department in waterproof rubber area, in the slot part of A face embedding A corridor formula structure terminal surface department notch with waterproof rubber area, the cap is lifted off, scribble emollient on the lateral surface that waterproof rubber area exposes the slot part, make the B face of waterproof rubber area aim at the slot part of B corridor formula structure terminal surface department notch, push away A corridor formula structure, make two corridor formula structure terminal surfaces fold, in the slot part of B face embedding B corridor formula structure terminal surface department notch with waterproof rubber area.
The waterproof method for the underground gallery type structure jacking relay room is characterized in that:
in the first step, the waterproof rubber belt is prepared by the following steps:
firstly, two layers of rubber belt vertical units are aligned, pasted and bonded to form a rubber belt unit, when bonding is carried out, SK313 type cold vulcanization glue is respectively smeared on bonding surfaces of the two layers of rubber belt vertical units, so that the bonding surfaces of the two layers of rubber belt vertical units are aligned and pasted, the top surface and the bottom surface of the vertical unit of the two layers of the adhered rubber belts are respectively provided with a pressing plate, the two ends of the two pressing plates are respectively fastened by a group of bolt-nut components, the bolt-nut components and the pressing plates are removed after the SK313 type cold vulcanization glue is solidified to form the rubber belt unit, the two sides of the rubber belt unit are respectively provided with a step as a tongue-and-groove connecting port, the step of the tongue-and-groove connecting port on one side faces upwards, the step of the tongue-and-groove connecting port on the other side faces downwards, the tongue-and-groove connecting ports of two adjacent rubber belt units are mutually spliced to form an interface with the top surface and the bottom surface respectively flush, and thus at least two rubber belt units are sequentially spliced end to form an annular waterproof rubber belt;
step two, bending the straight line section and the circular arc section by adopting a stainless steel plate and forming a notch by welding;
the terminal surface of corridor formula structure includes the roof at top, the bottom plate of bottom and the side wall of both sides connection roof and bottom plate, respectively establishes a straightway on roof, bottom plate and the side wall of corridor formula structure, respectively establishes an arc section on the linkage segment of corridor formula structure roof and side wall, the linkage segment of bottom plate and side wall.
The method comprises the steps of customizing a waterproof rubber belt, presetting a steel notch before the end part of the corridor-type structure jacking trunk is poured, processing the customized rubber belt into a waterproof rubber ring before the corridor-type structure trunk is folded, and then installing the waterproof rubber ring into the notch, so that the problem of leakage prevention of the corridor-type structure trunk is effectively solved.
The invention has the following beneficial effects: the principle is simple, the method is easy to master by common constructors, the used material has strong durability, the waterproof performance is reliable, and the application range is wide.
Drawings
Figure 1 is a schematic view of the upper half of a longitudinal section of a rubber flashing tape according to the invention,
FIG. 2 is an enlarged partial view of the lower projection of the waterproof rubber tape of the present invention,
figure 3 is a schematic view of a rubber flashing tape according to the invention,
FIG. 4 is a schematic sectional view of a rubber band unit formed by bonding vertical units of a rubber band in the present invention,
figure 5 is a schematic cross-sectional view of a tongue-and-groove connection port of the present invention,
figure 6 is a cross-sectional view of two adjacent rubber belt units bonded together through a tongue-and-groove connection port according to the present invention,
figure 7 is a schematic view of the invention in which two adjacent straight line segments are smoothly connected by a circular arc segment,
figure 8 is a cross-sectional view taken along line a-a and line B-B of figure 7,
figure 9 is a cross-sectional view taken along line C-C of figure 7,
figure 10 is a schematic view of the present invention with the notches secured to the end faces of the porch structure,
figure 11 is a schematic view of the present invention with a waterproof rubber band inserted into the notch,
figure 12 is an enlarged view of a portion of the area D in figure 11,
fig. 13 is a schematic view of the present invention of inserting a waterproof rubber band into the notches of two porch structures.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
A waterproof method for a underground gallery type structure jacking relay room is characterized by comprising the following steps: the method is implemented in sequence according to the following steps:
manufacturing a waterproof rubber belt:
the waterproof rubber belt 1 is made of rubber, and the cross section of the waterproof rubber belt 1, namely the cross section perpendicular to the central axis of the waterproof rubber belt 1, is in a ring shape, as shown in fig. 1 and 2: the longitudinal section of the waterproof rubber belt 1 is axially symmetric with a central axis of the waterproof rubber belt 1 as a symmetry axis through the upper half part and the lower half part of the section of the central axis of the waterproof rubber belt 1, the upper half part of the longitudinal section of the waterproof rubber belt 1 is composed of a base strip 11, an upper convex block 12 and a lower convex block 13, the upper convex block 12 is sequentially fixed in the middle of the top surface of the base strip 11, and the lower convex block 13 is sequentially fixed in the middle of the bottom surface of the base strip 11.
The waterproof rubber belt 1 adopted in the embodiment is a rounded rectangle as shown in fig. 3, is a non-standard product, needs to be customized according to special processing of a section type, can be processed into a closed annular rubber ring according to a structural size in a rubber product factory, and can also be processed into the closed annular rubber ring by adopting a bonding method according to field conditions, and is specifically manufactured according to the following steps:
as shown in fig. 4: firstly, two layers of rubber belt vertical units 15 are aligned, pasted and bonded to form a rubber belt unit 16, the total length intercepted by the rubber belt vertical units 15 is calculated according to a formula L =2B +2H +2 π r +200, and the unit is mm, as shown in FIG. 3: b is the length of one straight edge of the waterproof rubber belt 1, H is the length of the other straight edge of the waterproof rubber belt 1, r is the middle arc length of an arc connecting two adjacent straight edges of the waterproof rubber belt 1, the middle arc length is the average value of the sum of the inner arc length and the outer arc length of the arc, when in bonding, SK313 type cold vulcanization glue is respectively smeared on the bonding surfaces of the two layers of rubber belt vertical units 15, the bonding surfaces of the two layers of rubber belt vertical units 15 are aligned and attached, a pressing plate 17 is respectively arranged on the top surface and the bottom surface of the attached two layers of rubber belt vertical units 15, two ends of the two pressing plates 17 are respectively fastened by a group of bolt-nut assemblies 18, after the SK313 type cold vulcanization glue is solidified, the bolt-nut assemblies 18 and the pressing plate 17 are removed to form the rubber belt unit 16, the rubber belt unit is dried at normal temperature by more than 48hour, and the drying time can be properly shortened when the ambient temperature is higher than 30 ℃.
As shown in fig. 5: the rubber belt unit 16 is provided with steps on both sides as the tongue-and-groove connection ports 19, wherein the step of the tongue-and-groove connection port 19 on one side faces upwards, the step of the tongue-and-groove connection port 19 on the other side faces downwards, the thickness of the rubber belt unit 16 at the tongue-and-groove connection port 19 is 30mm, the step height of the tongue-and-groove connection port 19 is 15mm, and the step length is not less than 200mm, as shown in fig. 6: the tongue-and-groove connecting ports 19 of two adjacent rubber belt units 16 are spliced with each other to form an interface with the top surface and the bottom surface being respectively flush, so that at least two rubber belt units 16 are spliced end to end in sequence to form the annular waterproof rubber belt 1.
Installing a notch:
the notch 2 includes a straight line section 21 and a circular arc section 22, and the straight line section 21 and the circular arc section 22 each have four sections, as shown in fig. 7: two adjacent straight line segments 21 are perpendicular to each other and are smoothly connected through a circular arc segment 22 so as to be spliced into a rounded rectangle, as shown in fig. 8 and 9: the cross sections of the straight line section 21 and the circular arc section 22 are in a shape like a Chinese character 'ji', namely the cross sections are composed of a concave groove part 23 and flanges 24 at two sides of the opening of the groove part 23, and the straight line section 21 and the circular arc section 22 are both bent by stainless steel plates with the thickness of 1mm and are welded to form the notch 2. During welding, the straight line section 21 and the circular arc section 22 are placed on the ground with the length and width of the notches downwards and the length and width of the notches slightly larger than the cross section of the mounting structure to be subjected to flat hardening for splicing, the splicing of the notches is required to be smooth and straight, the interfaces are tight and have no staggered platforms, after the splicing, the welding, spot welding and fixing are carried out preliminarily, the sizes are corrected again, the welding is carried out after the design requirements are met, no welding beading exists in the welded notches 2, and the welding beading is required to be polished smoothly when the welding beading appears. In order to ensure that the notch 2 is firmly pre-set in the structure, a 25mm long steel wire with an outer diameter of 4mm is welded in sequence as fluke 27 on the outer side of the groove 23.
The following steps are performed on the end faces of two oppositely arranged gallery structures 3, as shown in fig. 10: paste on gallery type structure 3's terminal surface and cover and fix wooden backing plate 41, wooden backing plate 41 and gallery type structure 3's template all supports the support with stupefied 42 of wood outward, be equipped with on gallery type structure 3's terminal surface and wooden backing plate 4 with the recess that notch 2 matches each other, imbed slot part 23 after pouring into lumber skid 25 in slot part 23 of notch 2 in the recess, and make the flange 24 of notch 2 paste respectively and cover on wooden backing plate 4, fix flange 24 on wooden backing plate 4 with screw 26, a fender soil steel sheet can be covered at two gallery type structure 3's top.
The terminal surface of corridor formula structure 3 includes the side wall that roof and bottom plate are connected to the bottom plate and the both sides of roof, bottom at top, respectively establishes a straightway 21 on roof, bottom plate and the side wall of corridor formula structure 3, respectively establishes an arc section 22 on the linkage segment of linkage segment, bottom plate and the side wall of 3 roof of corridor formula structure and side wall.
Installing a waterproof rubber ring:
as shown in fig. 11: the method comprises the following steps that two opposite gallery type structures 3 are respectively an A gallery type structure 3 and a B gallery type structure 3, two end faces of a waterproof rubber belt 1 are respectively an a face and a B face, groove portions 23 of notches 2 in the two gallery type structures 3 are cleaned, particularly, granular sundries are not required to be left, a cap 14 is sleeved on the B face of the waterproof rubber belt 1, the a face of the waterproof rubber belt 1 is aligned to the groove portions 23 of the notches 2 at the end faces of the A gallery type structure 3, the cap 14 at the B face of the waterproof rubber belt 1 is knocked, and the a face of the waterproof rubber belt 1 is embedded into the groove portions 23 of the notches 2 at the end faces of the A gallery type structure 3 along the direction shown by an arrow E in figure 12; as shown in fig. 13: the cap 14 is detached, the lubricant is smeared on the outer side surface of the exposed groove part 23 of the waterproof rubber belt 1, the B surface of the waterproof rubber belt 1 is aligned with the groove part 23 of the notch 2 at the end surface of the B-gallery type structure 3, the sealing gasket 31 is pasted between the two gallery type structures 3, the A-gallery type structure 3 is pushed along the direction shown by the arrow F in figure 13, the end surfaces of the two gallery type structures 3 are folded, and the B surface of the waterproof rubber belt 1 is embedded into the groove part 23 of the notch 2 at the end surface of the B-gallery type structure 3.
Because the waterproof rubber belt 1 after bonding is heavier, adopt bracket 5 that the scaffold steel pipe set up to assist the installation during the installation, put into notch 2 on bracket gradually with waterproof rubber belt 1 support hanging.
Preferably, the installation of waterproof rubber belt 1 begins from the roof of corridor formula structure 3 earlier, later carries out side wall, bottom plate installation in proper order.

Claims (2)

1. A waterproof method for a underground gallery type structure jacking relay room is characterized by comprising the following steps: the method is implemented in sequence according to the following steps:
manufacturing a waterproof rubber belt:
the waterproof rubber belt (1) is made of rubber, the cross section of the waterproof rubber belt (1) is annular, the upper half part and the lower half part of the longitudinal section of the waterproof rubber belt (1) are axially symmetrical by taking a central axis of the waterproof rubber belt (1) as a symmetry axis, the upper half part of the longitudinal section of the waterproof rubber belt (1) is composed of a base strip (11), an upper convex block (12) and a lower convex block (13), the upper convex block (12) is sequentially fixed in the middle of the top surface of the base strip (11), and the lower convex block (13) is sequentially fixed in the middle of the bottom surface of the base strip (11);
installing a notch:
the notch (2) comprises straight line sections (21) and circular arc sections (22), the straight line sections (21) and the circular arc sections (22) are respectively provided with four sections, two adjacent straight line sections (21) are perpendicular to each other and are smoothly connected through the circular arc sections (22) to be spliced into a rounded rectangle, the cross sections of the straight line sections (21) and the circular arc sections (22) are in a shape like a Chinese character ' ji ', namely the cross sections are formed by groove parts (23) in a shape like a Chinese character ' ji and blocking edges (24) on two sides of an opening of the groove parts (23);
the method comprises the following steps of: the wooden cushion plate (41) is pasted and fixed on the end face of the gallery structure (3), the wooden cushion plate (41) is supported by wood ridges (42) externally, grooves matched with the notches (2) are formed in the end face of the gallery structure (3) and the wooden cushion plate (4), the groove parts (23) are embedded into the grooves after the wood pad (25) is plugged into the groove parts (23) of the notches (2), the flanges (24) of the notches (2) are respectively pasted and covered on the wooden cushion plate (4), and the flanges (24) are fixed on the wooden cushion plate (4) by screws (26);
installing a waterproof rubber ring:
the method comprises the steps of arranging two opposite gallery type structures (3) to be an A gallery type structure (3) and a B gallery type structure (3) respectively, arranging two end faces of a waterproof rubber belt (1) to be an a face and a B face respectively, cleaning a groove part (23) of a notch (2) in the two gallery type structures (3), sleeving a cap (14) on the B face of the waterproof rubber belt (1), enabling the a face of the waterproof rubber belt (1) to be aligned to the groove part (23) of the notch (2) at the end face of the A gallery type structure (3), knocking the cap (14) at the B face of the waterproof rubber belt (1), embedding the a face of the waterproof rubber belt (1) into the groove part (23) of the notch (2) at the end face of the A gallery type structure (3), dismounting the cap (14), smearing lubricating agents on the outer side face of the groove part (23) exposed out of the waterproof rubber belt (1), enabling the B face of the waterproof rubber belt (1) to be aligned to the groove part (23) of the notch (2) at the end face of the B gallery type structure (3), pushing the A-corridor-type structure (3) to enable the end faces of the two corridor-type structures (3) to be folded, and embedding the B-face of the waterproof rubber belt (1) into the groove part (23) of the notch (2) at the end face of the B-corridor-type structure (3).
2. The method for preventing water in the jacking trunk room of the underground gallery type structure as claimed in claim 1, wherein:
in the step I, the waterproof rubber belt (1) is prepared by the following steps:
firstly, two layers of rubber belt vertical units (15) are aligned, pasted and bonded to form a rubber belt unit (16), when bonding is carried out, glue is respectively smeared on bonding surfaces of the two layers of rubber belt vertical units (15), bonding surfaces of the two layers of rubber belt vertical units (15) are aligned and pasted, a pressing plate (17) is respectively arranged on the top surface and the bottom surface of the two layers of rubber belt vertical units (15) after the two layers of rubber belt vertical units are pasted, two ends of the two pressing plates (17) are respectively fastened by a group of bolt-nut assemblies (18), the bolt-nut assemblies (18) and the pressing plates (17) are removed after the glue is solidified to form the rubber belt unit (16), steps are respectively arranged on two sides of the rubber belt unit (16) to serve as tongue-and groove connecting ports (19), wherein the step surface of the tongue-and-groove connecting port (19) on one side faces upwards, the step surface of the tongue-and-groove connecting port (19) on the other side faces downwards, and the tongue-and groove connecting ports (19) of the two adjacent rubber belt units (16) are mutually spliced to form a top surface and a bottom surface which are respectively flush with the same level The at least two rubber belt units (16) are sequentially spliced end to form the annular waterproof rubber belt (1);
in the second step, both the straight line section (21) and the circular arc section (22) are bent by adopting stainless steel plates and form a notch (2) by welding,
the end face of the corridor-type structure (3) comprises a top plate at the top, a bottom plate at the bottom and side walls, wherein the two sides of the bottom plate are connected with the top plate, the side walls of the bottom plate, a straight line segment (21) is respectively arranged on the top plate, the bottom plate and the side walls of the corridor-type structure (3), and an arc segment (22) is respectively arranged on the connecting segments of the top plate and the side walls, the connecting segments of the bottom plate and the side walls of the corridor-type structure (3).
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1560391A (en) * 2004-02-27 2005-01-05 武汉理工大学 Construction technology of relay jacking for glass fiber reinforced plastics sand-inclusion pipe-jacking and apparatus of device thereof
CN2903620Y (en) * 2004-12-20 2007-05-23 陕西唐都水泥制品有限责任公司 Relaying intermediate pipe for machine head jacking method in mechanical construction
CN102912720A (en) * 2012-10-16 2013-02-06 中铁十局集团有限公司 Induced crack structure of frame bridge
CN203176535U (en) * 2013-04-12 2013-09-04 天津超威千斤顶有限公司 Intermediate jacking station of relay jacking steel pipes
CN103292036A (en) * 2012-03-02 2013-09-11 上海市政工程设计研究总院(集团)有限公司 Assembled curved steel jacking pipe joint and jacking method thereof
CN205226624U (en) * 2015-09-07 2016-05-11 中国石油天然气集团公司 Combination wherein of push pipe then within a definite time
EP3296605A1 (en) * 2015-09-08 2018-03-21 Zhejiang Xinzhou Bamboo-Based Composites Technology Co., Ltd. Prefabricated bamboo composite pipe gallery
CN211925017U (en) * 2020-04-08 2020-11-13 中铁上海工程局集团有限公司 Interval plugging device is relayed to push pipe section first cover

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1560391A (en) * 2004-02-27 2005-01-05 武汉理工大学 Construction technology of relay jacking for glass fiber reinforced plastics sand-inclusion pipe-jacking and apparatus of device thereof
CN2903620Y (en) * 2004-12-20 2007-05-23 陕西唐都水泥制品有限责任公司 Relaying intermediate pipe for machine head jacking method in mechanical construction
CN103292036A (en) * 2012-03-02 2013-09-11 上海市政工程设计研究总院(集团)有限公司 Assembled curved steel jacking pipe joint and jacking method thereof
CN102912720A (en) * 2012-10-16 2013-02-06 中铁十局集团有限公司 Induced crack structure of frame bridge
CN203176535U (en) * 2013-04-12 2013-09-04 天津超威千斤顶有限公司 Intermediate jacking station of relay jacking steel pipes
CN205226624U (en) * 2015-09-07 2016-05-11 中国石油天然气集团公司 Combination wherein of push pipe then within a definite time
EP3296605A1 (en) * 2015-09-08 2018-03-21 Zhejiang Xinzhou Bamboo-Based Composites Technology Co., Ltd. Prefabricated bamboo composite pipe gallery
CN211925017U (en) * 2020-04-08 2020-11-13 中铁上海工程局集团有限公司 Interval plugging device is relayed to push pipe section first cover

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