CN108331367A - The Basement reconstruction structure of raft foundation - Google Patents

The Basement reconstruction structure of raft foundation Download PDF

Info

Publication number
CN108331367A
CN108331367A CN201810152604.6A CN201810152604A CN108331367A CN 108331367 A CN108331367 A CN 108331367A CN 201810152604 A CN201810152604 A CN 201810152604A CN 108331367 A CN108331367 A CN 108331367A
Authority
CN
China
Prior art keywords
original
stake
bearing column
joint bar
basement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810152604.6A
Other languages
Chinese (zh)
Inventor
朱奎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201810152604.6A priority Critical patent/CN108331367A/en
Publication of CN108331367A publication Critical patent/CN108331367A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/0007—Base structures; Cellars
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0266—Enlarging
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/48—Foundations inserted underneath existing buildings or constructions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02—Protective 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D37/00—Repair of damaged foundations or foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/64—Repairing piles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Hydrology & Water Resources (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The invention discloses a kind of Basement reconstruction structures of raft foundation, it is characterized in that using original as basement bearing column, and removably lower chamber part bit position stake, reinforcing is carried out to original stake and forms bearing column, effective connection is carried out using special connecting structure between bearing column and original stake.Shearing resistance muscle is arranged in bearing column position in basement bottom board, and shearing resistance muscle shape is split heads shape.Watertight rubber ring is arranged in original outer surface in concrete floor, and watertight rubber ring installation position is ring seal slot to be arranged along original outer surface, ring seal slot is embedded in watertight rubber ring in the middle part of concrete floor；Polyurethane water-proof mortar is set above concrete floor.Structure of the invention performance is good, securely and reliably.

Description

The Basement reconstruction structure of raft foundation
Technical field
The present invention relates to a kind of Basement reconstruction method, more particularly to the Basement reconstruction structure of a kind of raft foundation.
Background technology
With the development of the city, parking difficulty becomes the problem of puzzlement common people.It is necessary to have transformation condition to some Building is transformed, and resets basement.For band raft foundation building, Basement reconstruction structure is due in raft plate base Stake is disposed below in plinth, and stake spacing is relatively close, and stake spacing is generally between 1.8~2.5mm, and these stakes are main vertical How load-carrying member can ensure that the safety of building and can ensure that the use function of basement, be engineering staff's class to be faced Topic.
Invention content
The present invention is to provide a kind of Basement reconstruction structure of raft foundation, solves asking for safety during Basement reconstruction Topic.
The present invention during Basement reconstruction of building using original as basement bearing column, and removably under Room site portion stake carries out reinforcing to original stake and forms bearing column, bearing column and original for the situation that original dowel section area is inadequate Have and effective connection is carried out using special connecting structure between stake.Original stake easily becomes infiltration with concrete floor contact site and leads to Road carries out waterproof using watertight rubber ring.
Bearing column is the cylinder after original stake is reinforced, the original half 120~300mm of path length of stake of bearing column radius ratio, i.e., It is 120~300mm that annular concrete width is reinforced in bearing column, and the principal rod that annular concrete is reinforced in bearing column uses diameter For the reinforcing bar of 22~25mm, adjacent load intercolumniation is 3.5~6mm；The total sectional area of bearing column and former all piles are total after reinforcing Sectional area is identical or difference is less than 10%；Basement bottom board thickness is 400~550mm, and basement bottom board is in bearing column position Shearing resistance muscle is set, and it is split heads shape that shearing resistance muscle diameter, which uses 32~35mm, shearing resistance muscle shape,.Original outer surface in concrete floor Watertight rubber ring is set, and watertight rubber ring installation position is that ring seal is arranged along original outer surface in the middle part of concrete floor Slot, ring seal slot 3~5mm of indent, ring seal slot are embedded in watertight rubber ring；Polyurethane water-proof is set above concrete floor Mortar, polyurethane water-proof mortar thickness are 15~25mm.
When original stake is hollow shell pill, annular concrete is reinforced in bearing column with original connecting structure using as follows： Hollow shell pill is inserted into joint bar, and joint bar hole is arranged in hollow shell pill, and joint bar hole is arranged symmetrically, and joint bar bore dia is 28~31mm, joint bar A diameter of 25~28mm；If reinforcing annular concrete section width is less than or equal to 150mm, joint bar combines to form cross, such as Fruit reinforces ring section width and is more than 150mm, and joint bar combines to form M shape；Joint bar is evenly arranged along stake length direction, joint bar edge The spacing of stake length direction arrangement is 500~600mm, and gap is closed using high-strength epoxy resin between joint bar and joint bar hole.
Construction procedure includes：
(1) foundation soil is excavated to basement bottom board elevation of bottom position；
(2) casting concrete bottom plate
Ring seal slot is dug out in original outer surface, and watertight rubber ring is embedded in annular water stopping trough；Bind concrete floor Reinforcing bar, shearing resistance muscle, supporting module are simultaneously poured；
(3) in concrete raft plate following settings temporary steel support, temporary steel support uses I-steel, I-steel that spacing is arranged For 2~2.5mm, setting cross bar is attached between adjacent I-steel, to ensure the globality of I-shaped bracing members；Topmost cross bar It is 0.6~0.8mm from concrete raft plate distance from bottom, remaining cross bar distance is 1.8~2.2mm；
(4) original stake is reinforced, bearing column is formed；
Bearing column by original of part as basement, and original stake is reinforced；It is hollow pipe for original stake When stake, joint bar hole is set in hollow shell pill, joint bar is inserted into behind joint bar hole and is closed using high-strength epoxy resin, binding is held The principal rod of power column is simultaneously welded with joint bar, and supporting module, is then poured and is reinforced annular concrete in bearing column；
Concrete raft plate and pile concrete of the basement bottom board in addition to bearing column are cut, and cuts off a reinforcing bar；
(5) the hollow shell pill hollow parts of the positions concrete floor and concrete floor or less 500mm are stretched into using strong Concrete of the degree more than or equal to C30 is closed, and steel pallet is first transferred before concrete enclosing, steel pallet is as closed concrete Bracket, steel pallet thickness are 15~18mm；
(6) the brushing polyurethane water-proof mortar on concrete floor.
Structure of the invention performance is good, securely and reliably.
Description of the drawings
Fig. 1 is the raft foundation schematic diagram excavated after foundation soil, and Fig. 2 is Basement reconstruction formwork system schematic diagram, and Fig. 3 is Basement reconstruction structural schematic diagram, Fig. 4 are hollow shell pill ruggedized construction schematic diagram.
In each attached drawing：1, concrete raft plate, 2, Yuan Youzhuan, 3, bearing column, 4, basement bottom board, 5, watertight rubber ring, 6, I-steel, 7, cross bar, 8, polyurethane water-proof mortar, 9, shearing resistance muscle, 10, joint bar, 11, principal rod, 12, connection stirrup, 13, reinforce Annular concrete, 14, hollow shell pill.
Specific implementation mode
Embodiment
Bearing column 3 is the cylinder after original stake 2 is reinforced, original 2 half path length of stake of 3 radius ratio of bearing column in embodiment 120mm, i.e., it is 120mm that 13 width of annular concrete is reinforced in bearing column 3, and the stress of annular concrete 13 is reinforced in bearing column 3 For muscle 11 using the reinforcing bar of a diameter of 22~25mm, 3 spacing of adjacent bearing column is 3.5~6mm；The total cross section of bearing column 3 after reinforcing Product is identical as former all piles total sectional area or difference is less than 10%；4 thickness of basement bottom board is 400~550mm, basement bottom For plate 4 in 3 position of bearing column setting shearing resistance muscle 9, it is split heads shape that 9 diameter of shearing resistance muscle, which uses 32~35mm, 9 shape of shearing resistance muscle,.Coagulation 2 outer surface of original stake setting watertight rubber ring 5 in native bottom plate, 5 installation position of watertight rubber ring is in the middle part of concrete floor, along original There is 2 outer surface of stake that ring seal slot, ring seal slot 3~5mm of indent are set, ring seal slot is embedded in watertight rubber ring 5；Coagulation Native substrate setting polyurethane water-proof mortar 8,8 thickness of polyurethane water-proof mortar is 15~25mm.
Annular concrete 13 is reinforced when original stake 2 is hollow shell pill 14, in bearing column 3 to adopt with 2 connecting structure of original stake With as follows：Hollow shell pill 14 is inserted into joint bar 10, and joint bar hole is arranged in hollow shell pill 14, and joint bar hole is arranged symmetrically, and joint bar bore dia is 28~31mm, 10 a diameter of 25~28mm of joint bar；Reinforcing 13 cross-sectional width of annular concrete is 120mm, and the combination of joint bar 10 is formed Cross；Joint bar 10 is evenly arranged along stake length direction, and joint bar 10 is 500~600mm, joint bar 10 along the spacing that stake length direction is arranged Gap is closed using high-strength epoxy resin between joint bar hole.
Construction procedure includes：
(1) foundation soil is excavated to 4 elevation of bottom position of basement bottom board；
(2) casting concrete bottom plate
Ring seal slot is dug out in 2 outer surface of original stake, and watertight rubber ring 5 is embedded in annular water stopping trough；Bind concrete bottom Slab muscle, shearing resistance muscle 9, supporting module are simultaneously poured；
(3) in 1 following settings temporary steel support of concrete raft plate, temporary steel support uses I-steel 6, I-steel 6 to be arranged Spacing is 2~2.5mm, and cross bar 7, which is arranged, between adjacent I-steel 6 is attached, to ensure the globality of the support of I-steel 6；Most Upper cross bar 7 is 0.6~0.8mm from 1 distance from bottom of concrete raft plate, remaining cross bar 7 is apart from for 1.8~2.2mm；
(4) original stake 2 is reinforced, bearing column 3 is formed；
Bearing column 3 by the original stake 2 in part as basement, and original stake 2 is reinforced；It is sky for original stake 2 When heart pile pile 14, joint bar 10 is inserted into behind joint bar hole and is carried out using high-strength epoxy resin by the setting joint bar hole in hollow shell pill 14 Closing binds the principal rod 11 of bearing column 3 and is welded with joint bar 10, and supporting module, then pours and reinforces annular in bearing column 3 Concrete 13.
Concrete raft plate 1 and pile concrete of the basement bottom board 4 in addition to bearing column 3 are cut, and cuts off a reinforcing bar；
(5) 14 hollow parts of hollow shell pill for stretching into the positions concrete floor and concrete floor or less 500mm use Concrete of the intensity more than or equal to C30 is closed, and steel pallet is first transferred before concrete enclosing, steel pallet is as closed concrete Bracket, steel pallet thickness be 15~18mm.
(6) the brushing polyurethane water-proof mortar 8 on concrete floor.

Claims (1)

1. a kind of Basement reconstruction structure with raft foundation, it is characterized in that using original as basement bearing column, and go Except basement site portion stake, reinforcing is carried out to original stake and forms bearing column, special connection is used between bearing column and original stake Construction carries out effective connection；Original stake carries out waterproof with concrete floor contact site using watertight rubber ring；
Bearing column is the cylinder after original stake is reinforced, the original half 120~300mm of path length of stake of bearing column radius ratio, i.e. load It is 120~300mm that annular concrete width is reinforced in column, and the principal rod that annular concrete is reinforced in bearing column uses a diameter of 22 The reinforcing bar of~25mm, adjacent load intercolumniation are 3.5~6mm；The total sectional area of bearing column and former all piles total cross section after reinforcing Product is identical or difference is less than 10%；Basement bottom board thickness is 400~550mm, and basement bottom board is arranged in bearing column position Shearing resistance muscle, it is split heads shape that shearing resistance muscle diameter, which uses 32~35mm, shearing resistance muscle shape,；Original outer surface setting in concrete floor Watertight rubber ring, watertight rubber ring installation position are that ring seal slot, ring is arranged along original outer surface in the middle part of concrete floor Shape water stopping trough 3~5mm of indent, ring seal slot are embedded in watertight rubber ring；Polyurethane water-proof mortar is set above concrete floor, Polyurethane water-proof mortar thickness is 15~25mm；
Special connecting structure is using as follows：When original stake is hollow shell pill, annular concrete and original stake are reinforced in bearing column Connecting structure is using as follows：Hollow shell pill is inserted into joint bar, and joint bar hole is arranged in hollow shell pill, and joint bar hole is arranged symmetrically, and joint bar hole is straight Diameter is 28~31mm, a diameter of 25~28mm of joint bar；If reinforcing annular concrete section width is less than or equal to 150mm, joint bar Combination forms cross；Joint bar is evenly arranged along stake length direction, and joint bar is 500~600mm along the spacing that stake length direction is arranged, is inserted Gap is closed using high-strength epoxy resin between muscle and joint bar hole.
CN201810152604.6A 2016-07-26 2016-07-26 The Basement reconstruction structure of raft foundation Pending CN108331367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810152604.6A CN108331367A (en) 2016-07-26 2016-07-26 The Basement reconstruction structure of raft foundation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810152604.6A CN108331367A (en) 2016-07-26 2016-07-26 The Basement reconstruction structure of raft foundation
CN201610637962.7A CN106193644B (en) 2016-07-26 2016-07-26 Basement reconstruction structure with raft foundation building

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201610637962.7A Division CN106193644B (en) 2016-07-26 2016-07-26 Basement reconstruction structure with raft foundation building

Publications (1)

Publication Number Publication Date
CN108331367A true CN108331367A (en) 2018-07-27

Family

ID=57513583

Family Applications (4)

Application Number Title Priority Date Filing Date
CN201810152604.6A Pending CN108331367A (en) 2016-07-26 2016-07-26 The Basement reconstruction structure of raft foundation
CN201810152607.XA Pending CN108360561A (en) 2016-07-26 2016-07-26 The Basement reconstruction of raft foundation constructs
CN201610637962.7A Active CN106193644B (en) 2016-07-26 2016-07-26 Basement reconstruction structure with raft foundation building
CN201810152603.1A Pending CN108331154A (en) 2016-07-26 2016-07-26 Basement reconstruction construction method with raft foundation building

Family Applications After (3)

Application Number Title Priority Date Filing Date
CN201810152607.XA Pending CN108360561A (en) 2016-07-26 2016-07-26 The Basement reconstruction of raft foundation constructs
CN201610637962.7A Active CN106193644B (en) 2016-07-26 2016-07-26 Basement reconstruction structure with raft foundation building
CN201810152603.1A Pending CN108331154A (en) 2016-07-26 2016-07-26 Basement reconstruction construction method with raft foundation building

Country Status (1)

Country Link
CN (4) CN108331367A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285032B (en) * 2016-07-26 2018-12-14 朱奎 Basement reconstruction construction with raft foundation building
CN109610882B (en) * 2018-12-26 2020-09-29 北京建工四建工程建设有限公司 Support structure for building translation and construction method thereof
CN110984226B (en) * 2019-11-19 2021-08-03 山东建固特种专业工程有限公司 Waterproof construction method for frame column in reverse construction method
CN111411791A (en) * 2020-01-21 2020-07-14 武大巨成结构股份有限公司 Existing foundation upper and lower column connecting structure and method for expanding underground space

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1257149A (en) * 1998-12-11 2000-06-21 北京市第七城市建设工程公司 Integral foundation underpinning technology for building added floor
JP2002115260A (en) * 2000-10-11 2002-04-19 Shimizu Corp Extension method for basement
CN102127974A (en) * 2011-04-18 2011-07-20 上海现代建筑设计(集团)有限公司 Design and construction method of additional cellar under existing building
CN102444142A (en) * 2011-09-20 2012-05-09 新世纪建设集团有限公司 Pile group column replacement expanded basement and construction method of same
CN203222817U (en) * 2013-05-11 2013-10-02 王镛 Connecting structure of basement stand column
CN104878835A (en) * 2015-05-19 2015-09-02 叶长青 Strip-shaped foundation house rear basement structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100338315C (en) * 2005-06-09 2007-09-19 上海市城市建设设计研究院 Construction method of reconstrating existant underground space into subway station
JP4722783B2 (en) * 2006-07-03 2011-07-13 株式会社竹中工務店 Foundation reinforcement method for existing buildings
CN106285032B (en) * 2016-07-26 2018-12-14 朱奎 Basement reconstruction construction with raft foundation building

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1257149A (en) * 1998-12-11 2000-06-21 北京市第七城市建设工程公司 Integral foundation underpinning technology for building added floor
JP2002115260A (en) * 2000-10-11 2002-04-19 Shimizu Corp Extension method for basement
CN102127974A (en) * 2011-04-18 2011-07-20 上海现代建筑设计(集团)有限公司 Design and construction method of additional cellar under existing building
CN102444142A (en) * 2011-09-20 2012-05-09 新世纪建设集团有限公司 Pile group column replacement expanded basement and construction method of same
CN203222817U (en) * 2013-05-11 2013-10-02 王镛 Connecting structure of basement stand column
CN104878835A (en) * 2015-05-19 2015-09-02 叶长青 Strip-shaped foundation house rear basement structure

Also Published As

Publication number Publication date
CN108331154A (en) 2018-07-27
CN108360561A (en) 2018-08-03
CN106193644B (en) 2018-12-14
CN106193644A (en) 2016-12-07

Similar Documents

Publication Publication Date Title
CN106013172B (en) Double-row pile combines Deep Foundation Pit Support for Soft Soil structure and construction method with diagonal brace
CN101298782B (en) Method and system for basement engineering water proof and water drain
CN105178357A (en) Prefabricated subsurface structure under foundation trench open cutting condition and construction method for prefabricated subsurface structure under foundation trench open cutting condition
CN101117800A (en) Method for one-pile-three-use in underground engineering
CN103510540B (en) Mortar flag stone retaining wall reinforcement construction method and structure thereof
CN106193644B (en) Basement reconstruction structure with raft foundation building
CN102162258B (en) Concrete-filled steel tubular high-pile tower footing structure of tower crane and construction method thereof
CN106193047B (en) Big width base pit stand construction
CN108612110A (en) A kind of Deep Foundation Pit of Metro Stations combined type construction method for supporting
CN106285032B (en) Basement reconstruction construction with raft foundation building
CN208717934U (en) A kind of tower-crane foundation structure
CN104652495A (en) Waterproof construction process for joint of inner support upright post of foundation pit and bottom plate
CN206204954U (en) Double-row pile combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace
CN207662389U (en) A kind of sedimentation and deformation observation base point using covered culvert
CN106088762B (en) A kind of prefabricated assembled round underground granary of insertion slot type encased steel plate
KR20020060351A (en) Pier revolution apparatus and T-type pier construction method using the same
CN105155867B (en) A kind of underpinning device of the existing large diameter pile building of Tunnel Passing
KR970070352A (en) New construction method of underground structures under non-installation
CN102322065B (en) Bottom channel inner support of foundation pit supporting structure
CN206768879U (en) A kind of poured band of outer wall of basement structure
CN106193744B (en) The round prefabricated assembled underground granary of equal steel plated inside and outside one kind
CN106088759B (en) The equal stepped prefabricated assembled circular underground granary of steel plated inside and outside one kind
CN110468862A (en) A kind of plugging structure for subway station precipitation well head
CN110318419A (en) The construction method of the lining door opening supporting of underpass type piping lane one
CN215562584U (en) Pre-tensioning method prestress anti-floating anchor rod construction node

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180727