CN102864946A - Process for supporting existing buildings through structural steel and horizontal rachel rod member and additionally adding multilayer basement - Google Patents
Process for supporting existing buildings through structural steel and horizontal rachel rod member and additionally adding multilayer basement Download PDFInfo
- Publication number
- CN102864946A CN102864946A CN2012104075084A CN201210407508A CN102864946A CN 102864946 A CN102864946 A CN 102864946A CN 2012104075084 A CN2012104075084 A CN 2012104075084A CN 201210407508 A CN201210407508 A CN 201210407508A CN 102864946 A CN102864946 A CN 102864946A
- Authority
- CN
- China
- Prior art keywords
- shaped steel
- basement
- tie bar
- existing building
- horizontal tie
- 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.)
- Granted
Links
Images
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a process for supporting existing buildings through structural steel and a horizontal rachel rod member and additionally adding a multilayer basement. The process includes drilling embedded structural steel to support the existing buildings; excavating earthwork under the existing buildings, wherein along with the increasing of the earthwork excavation depth, the restraining effect on the structural steel of the soil weakens, and stability of the structural steel is reduced; additionally adding the horizontal rachel rod member between the structural steel to improve stability of the excavated structural steel. By means of the process, deep excavation of the earthwork under the existing buildings can be achieved, and the multilayer basement can be additionally added. Underground layer adding project of the multilayer basement of the strip-shaped foundation buildings can be achieved by means of the process, safety of an underpinning structure is ensured, the structural steel and the horizontal rachel rod member can be recycled, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of Building technology, especially a kind of shaped steel adds horizontal tie bar support existing building and sets up multi-storey basement technique.
Background technology
At present, develop in order, rationally, comprehensively, efficiently the existing building Underground Space Resource, become and expand the infrastructure capacity, improve the Comprehensive Disaster Prevention for Cities ability, improve land utilization efficiency and the most effectively one of the approach that economizes the land resource.How New Buildings has considered the development and utilization of the underground space according to the requirement of urban planning.Yet a large amount of existing buildings is because historical reason, lacks perspective and do not design underground parking etc., along with parking difficulty has appearred in the increase of automobile quantity.Therefore, be an arduousness and urgent task to the exploitation of the existing building underground space.
Patent of invention " method for supporting and replacing bed plate foundation " (ZL200610045257.4), " static pressure pile process of construction of existing building basement " (ZL200710116226.8), " frame structure building single footing by root underpin the underground layer process that increases of method " (ZL201010226555.X), to increase layer method (ZL201110075492.7) etc. all are underground layer methods that increase for the frame construction single footing to frame construction single footing existing building basement, but are not suitable for being applied to strip foundation.In paper " experimental study and the numerical analysis of a high pile cap steel pile tube Compression Stability " literary composition, proposed to utilize wall both sides steel pipe support body of wall, the method that cuts former basis and set up basement.But the method is suitable for the underground layer that increases of strip foundation building, but does not consider the drawknot between the steel pipe, to increase the stable of steel pipe, therefore is not suitable for degree of depth excavation, to set up multi-storey basement.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of shaped steel to add horizontal tie bar support existing building and set up multi-storey basement technique, utilize this technique can realize the underground layer engineering that add of strip foundation building multi-storey basement, guaranteed the safety of underpinning structure, shaped steel and horizontal tie bar and recycling have reduced cost.
For achieving the above object, the present invention adopts following technical proposals:
A kind of shaped steel adds horizontal tie bar support existing building and sets up multi-storey basement technique, hole pre-buried shaped steel to support existing building, the earthwork of excavation existing building below, along with the increase of the soil excavation degree of depth, soil weakens the effect of contraction of shaped steel, the stability of shaped steel reduces, between shaped steel, set up horizontal tie bar, can improve by the stability of excavation shaped steel, utilize the method can realize the deep excavation of the existing building below earthwork, and can set up multi-storey basement, concrete steps are as follows:
(1) with rig mud off pore-forming, depth of pore forming is to bearing stratum;
(2) behind the clear hole, in the bottom in hole concrete perfusion or cement mortar, until plan to build the basement bottom board position;
(3) construction underpins beam and clamps the existing building body of wall in both sides;
(4) planning to build basement altitude range insertion shaped steel; The shaped steel lower end anchors in the bearing stratum of planning to build under the basement bottom board at least 1m, and the upper end support and connection underpin the underpinning cap of pile of beam;
(5) in the boring of inserting shaped steel, pour into the concrete of sand, stone or label C15, shaped steel is produced constraint, guarantee the stability of shaped steel;
(6) excavate the earthwork of existing building below, remove simultaneously the concrete of shaped steel sand, stone or label C15 all around; After the earthwork of below, basis was excavated, the load transfer of existing building can be with former basic amputation to shaped steel;
(7) for guaranteeing the stability of shaped steel, the earthwork of 2 to 3 meters degree of depth of every excavation namely arranges together horizontal tie bar, to guarantee the stability of shaped steel between shaped steel; The method of attachment of shaped steel and horizontal tie bar can be welding, also can be that bolt connects; In order the joint of protecting shaped steel and horizontal tie bar not polluted by the sand of mud or landfill, stone, concrete, before shaped steel inserts boring, with the joint with parcels such as Polypropylence Sheet or malthoids;
(8) be excavated to the floor level place of multi-storey basement, construction concrete cushion, base plate waterproofing and basement bottom board;
(9) at every group of shaped steel centre position construction basement wall, make on basement wall and the existing building wall plane position consistent;
(10) when the horizontal tie bar bottom, embedded bar links to each other with shaped steel basement wall in the concrete basement body of wall, removes former horizontal tie bar through concreting, and embedded bar replaces horizontal tie bar, guarantees that shaped steel is stable; Removed horizontal tie bar, formed large space, to guarantee the construction of concrete wall, beam, plate;
(11) basement wall is built to former existing building body of wall place, with stiff cement mortar or expansive concrete both is connected;
(12) reclaim shaped steel and horizontal tie bar.
The invention has the beneficial effects as follows, the present invention is based on bearing between the shaped steel of vertical load (steel pipe or H shaped steel) and add horizontal tie bar, improve the principle of vertical pressurized shaped steel stability, proposed the underground technique that increases layer of horizontal drawknot type steel support existing building: the pre-buried shaped steel of holing is to support existing building, the earthwork of excavation building below.Along with the increase of the soil excavation degree of depth, soil weakens the effect of contraction of shaped steel, and the stability of shaped steel reduces.Between shaped steel, set up horizontal tie bar, can improve by the stability of excavation shaped steel.Utilize the method can realize the deep excavation of the existing building below earthwork, and can set up multi-storey basement.
Utilize the method can realize the underground layer engineering that add of strip foundation building multi-storey basement, guaranteed the safety of underpinning structure, shaped steel and horizontal tie bar and recycling have reduced cost.
Description of drawings
Fig. 1 is the underpinning structure layout plan;
Fig. 2 is mud off pore-forming schematic diagram;
Fig. 3 inserts the shaped steel schematic diagram;
Fig. 4 is earth excavation and horizontal tie bar is set;
Fig. 5 is the horizontal arrangement figure of horizontal tie bar;
Fig. 6 is that the basement soil excavation is complete and build underplate concrete figure;
Fig. 7 builds the pre-buried horizontal tie bar of basement wall body and function to link to each other with shaped steel and remove former horizontal tie bar;
Fig. 8 be continue to build basement wall and floor until with existing building wall connecting figure;
Fig. 9 removes and reclaims steel pipe figure;
Wherein 1---the existing building body of wall; 2---underpin beam; 3---underpinning cap of pile; 4---shaped steel; 5---plan to build the soil layer that basement need excavate; 6---bearing stratum; 7---boring; 8---horizontal tie bar; 9---basement bottom board; 10---basement wall; 11---the basement floor.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Shown in Fig. 1-9, shaped steel adds horizontal tie bar support existing building and sets up multi-storey basement technique, hole 7 pre-buried shaped steel 4 to support existing building, the earthwork of the soil layer 5 that basement need excavate is planned to build in excavation existing building below, increase along with the soil excavation degree of depth, soil weakens the effect of contraction of shaped steel 4, the stability of shaped steel 4 reduces, set up horizontal tie bar 84 of shaped steel, can improve by the stability of excavation shaped steel 4, utilize the method can realize the deep excavation of the existing building below earthwork, and can set up multi-storey basement, concrete steps are as follows:
(1) with rig mud off pore-forming, depth of pore forming is to bearing stratum 6;
(2) behind the clear hole, in the bottom in hole concrete perfusion or cement mortar, until plan to build basement bottom board 9 positions;
(3) construction underpins beam 2 and clamps existing building body of wall 1 in both sides;
(4) planning to build basement altitude range insertion shaped steel 4; Shaped steel 4 lower ends anchor in the bearing stratum 6 of planning to build under the basement bottom board 9 at least 1m, and the upper end support and connection underpin the underpinning cap of pile 3 of beam 2;
(5) in the boring 7 of inserting shaped steel 4, pour into the concrete of sand, stone or C15, shaped steel 4 is produced constraint, guarantee the stability of shaped steel 4;
(6) earthwork of the soil layer 5 that basement need excavate is planned to build in excavation existing building below, removes simultaneously the concrete of shaped steel 4 sand, stone or C15 all around; After the earthwork of below, basis was excavated, the load transfer of existing building can be with former basic amputation to shaped steel 4;
(7) for guaranteeing the stability of shaped steel 4, the earthwork that every excavation is 2 to 3 meters namely arranges together horizontal tie bar 84 of shaped steel, determines with the stability that guarantees shaped steel; Shaped steel 4 can be welding with the method for attachment of horizontal tie bar 8, also can be that bolt connects; In order to protect shaped steel 4 and the joint of horizontal tie bar 8 not to be polluted by the sand of mud or landfill, stone, concrete, before shaped steel 4 inserts boring, with the joint with parcels such as Polypropylence Sheet or malthoids;
(8) be excavated to the floor level place of multi-storey basement, construction concrete cushion, base plate waterproofing and basement bottom board 9;
(9) at every group of shaped steel 4 centre positions constructions basement wall 10, make on basement wall 10 and the existing building wall plane position consistent;
(10) when horizontal tie bar 8 bottom, embedded bar links to each other with shaped steel 4 basement wall 10 in concrete basement body of wall 10, removes former horizontal tie bar through concreting, and embedded bar replaces horizontal tie bar, guarantees that shaped steel is stable; Removed horizontal tie bar, formed large space, to guarantee the construction of concrete basement body of wall, basement beam, basement floor 11;
(11) basement wall 10 is built to former existing building body of wall place, with stiff cement mortar or expansive concrete both is connected;
(12) reclaim shaped steel 4 and horizontal tie bar 8.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (3)
1. a shaped steel adds horizontal tie bar and supports existing building and set up multi-storey basement technique, it is characterized in that the pre-buried shaped steel of holing is to support existing building, and horizontal tie bar is set up in the earthwork of excavation existing building below between shaped steel, and concrete steps are as follows:
(1) with rig mud off pore-forming, depth of pore forming is to bearing stratum;
(2) behind the clear hole, in the bottom in hole concrete perfusion or cement mortar, until plan to build the basement bottom board position;
(3) construction underpins beam and clamps the existing building body of wall in both sides;
(4) planning to build basement altitude range insertion shaped steel; Shaped steel upper end support and connection underpin the underpinning cap of pile of beam;
(5) in the boring of inserting shaped steel, pour into sand, stone or C15 concrete, shaped steel is produced constraint, guarantee the stability of shaped steel;
(6) excavate the earthwork of existing building below, remove simultaneously the concrete of shaped steel sand, stone or C15 all around; After the earthwork of below, basis was excavated, the load transfer of existing building was to shaped steel, with former basic amputation;
(7) for guaranteeing the stability of shaped steel, the earthwork that every excavation is 2 to 3 meters namely arranges together horizontal tie bar, to guarantee the stability of shaped steel between shaped steel;
(8) be excavated to the floor level place of multi-storey basement, construction concrete cushion, base plate waterproofing and basement bottom board;
(9) at every group of shaped steel centre position construction basement wall, make on basement wall and the existing building wall plane position consistent;
(10) when the horizontal tie bar bottom, embedded bar links to each other with shaped steel basement wall in the concrete basement body of wall, removes former horizontal tie bar through concreting, and embedded bar replaces horizontal tie bar, guarantees that shaped steel is stable; Removed horizontal tie bar, formed large space, to guarantee the construction of concrete wall, beam, plate;
(11) basement wall is built to former existing building body of wall place, with stiff cement mortar or expansive concrete both is connected;
(12) reclaim shaped steel and horizontal tie bar.
2. technique as claimed in claim 1 is characterized in that, described step (4) Shaped Steel lower end anchors in the bearing stratum of planning to build under the basement bottom board at least 1m.
3. technique as claimed in claim 1 is characterized in that, described step (7) Shaped Steel is that welding or bolt are connected with the method for attachment of horizontal tie bar; Before shaped steel inserts boring, the shaped steel joint is wrapped up with Polypropylence Sheet or malthoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210407508.4A CN102864946B (en) | 2012-10-23 | 2012-10-23 | Process for supporting existing buildings through structural steel and horizontal rachel rod member and additionally adding multilayer basement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210407508.4A CN102864946B (en) | 2012-10-23 | 2012-10-23 | Process for supporting existing buildings through structural steel and horizontal rachel rod member and additionally adding multilayer basement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102864946A true CN102864946A (en) | 2013-01-09 |
| CN102864946B CN102864946B (en) | 2014-07-16 |
Family
ID=47444053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210407508.4A Active CN102864946B (en) | 2012-10-23 | 2012-10-23 | Process for supporting existing buildings through structural steel and horizontal rachel rod member and additionally adding multilayer basement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102864946B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104102A (en) * | 2013-01-31 | 2013-05-15 | 中国建筑第八工程局有限公司 | Construction method for underground storey-addition reconstruction |
| CN103912134A (en) * | 2014-03-21 | 2014-07-09 | 上海建工四建集团有限公司 | Construction in-situ underground space structure and construction method |
| CN104453274A (en) * | 2014-11-25 | 2015-03-25 | 山东建筑大学 | Method for supporting underground layer increasing of existing building by supporting structure and underpinning structure |
| CN104532957A (en) * | 2014-12-08 | 2015-04-22 | 江苏中南建筑产业集团有限责任公司 | Inversed construction method for adding basement in existing building |
| CN104652839A (en) * | 2015-01-30 | 2015-05-27 | 中国矿业大学 | Method for reducing height of reinforced concrete frame structure |
| CN104878835A (en) * | 2015-05-19 | 2015-09-02 | 叶长青 | Strip-shaped foundation house rear basement structure |
| CN106013834A (en) * | 2016-06-03 | 2016-10-12 | 河海大学 | Device and method for storey addition of basement |
| CN107143149A (en) * | 2017-05-24 | 2017-09-08 | 广东省建筑科学研究院集团股份有限公司 | A kind of existing masonry structure building sets up the construction method of basement |
Citations (11)
| 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 |
| CN1687536A (en) * | 2005-06-07 | 2005-10-26 | 上海市城市建设设计研究院 | Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board |
| CN101397852A (en) * | 2007-09-26 | 2009-04-01 | 上海市第二建筑有限公司 | Construction method for increasing to build multi-storey basement to original building |
| WO2009146129A2 (en) * | 2008-04-03 | 2009-12-03 | Hawes Raymond W | System and method for modifying existing structures to provide improved resistance to extreme environmental conditions |
| CN101725258A (en) * | 2008-10-30 | 2010-06-09 | 上海天演建筑物移位工程有限公司 | Integral jacking method of heritage buildings |
| CN101886479A (en) * | 2010-07-14 | 2010-11-17 | 山东建筑大学 | Underground storey-adding process of frame structural building by one-by-one independent foundation underpinning method |
| CN201738595U (en) * | 2010-06-24 | 2011-02-09 | 张航 | Original house independent floor-adding facility without dismantlement or land increasing |
| CN102182325A (en) * | 2011-03-28 | 2011-09-14 | 东南大学 | Storey adding method for existing building basement with frame structure and independent foundation |
| CN102220769A (en) * | 2011-04-15 | 2011-10-19 | 上海天演建筑物移位工程有限公司 | System and method for underpinning and jacking building and adding storeys downwards |
| JP4823268B2 (en) * | 2008-05-02 | 2011-11-24 | 株式会社豊四季 | Retrofitting method for anti-vibration foundation structure |
| CN102587412A (en) * | 2012-02-13 | 2012-07-18 | 中天建设集团有限公司 | Stage construction basement support change method using underground continuous wall as separation containment |
-
2012
- 2012-10-23 CN CN201210407508.4A patent/CN102864946B/en active Active
Patent Citations (12)
| 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 |
| CN1687536A (en) * | 2005-06-07 | 2005-10-26 | 上海市城市建设设计研究院 | Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board |
| CN101397852A (en) * | 2007-09-26 | 2009-04-01 | 上海市第二建筑有限公司 | Construction method for increasing to build multi-storey basement to original building |
| WO2009146129A2 (en) * | 2008-04-03 | 2009-12-03 | Hawes Raymond W | System and method for modifying existing structures to provide improved resistance to extreme environmental conditions |
| WO2009146129A3 (en) * | 2008-04-03 | 2010-03-18 | Hawes Raymond W | System and method for modifying existing structures to provide improved resistance to extreme environmental conditions |
| JP4823268B2 (en) * | 2008-05-02 | 2011-11-24 | 株式会社豊四季 | Retrofitting method for anti-vibration foundation structure |
| CN101725258A (en) * | 2008-10-30 | 2010-06-09 | 上海天演建筑物移位工程有限公司 | Integral jacking method of heritage buildings |
| CN201738595U (en) * | 2010-06-24 | 2011-02-09 | 张航 | Original house independent floor-adding facility without dismantlement or land increasing |
| CN101886479A (en) * | 2010-07-14 | 2010-11-17 | 山东建筑大学 | Underground storey-adding process of frame structural building by one-by-one independent foundation underpinning method |
| CN102182325A (en) * | 2011-03-28 | 2011-09-14 | 东南大学 | Storey adding method for existing building basement with frame structure and independent foundation |
| CN102220769A (en) * | 2011-04-15 | 2011-10-19 | 上海天演建筑物移位工程有限公司 | System and method for underpinning and jacking building and adding storeys downwards |
| CN102587412A (en) * | 2012-02-13 | 2012-07-18 | 中天建设集团有限公司 | Stage construction basement support change method using underground continuous wall as separation containment |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104102B (en) * | 2013-01-31 | 2015-07-01 | 中国建筑第八工程局有限公司 | Construction method for underground storey-addition reconstruction |
| CN103104102A (en) * | 2013-01-31 | 2013-05-15 | 中国建筑第八工程局有限公司 | Construction method for underground storey-addition reconstruction |
| CN103912134A (en) * | 2014-03-21 | 2014-07-09 | 上海建工四建集团有限公司 | Construction in-situ underground space structure and construction method |
| CN104453274B (en) * | 2014-11-25 | 2016-02-17 | 山东建筑大学 | Utilize supporting and protection structure and underpinning structure to support existing building underground and increase layer method |
| CN104453274A (en) * | 2014-11-25 | 2015-03-25 | 山东建筑大学 | Method for supporting underground layer increasing of existing building by supporting structure and underpinning structure |
| CN104532957A (en) * | 2014-12-08 | 2015-04-22 | 江苏中南建筑产业集团有限责任公司 | Inversed construction method for adding basement in existing building |
| CN104652839A (en) * | 2015-01-30 | 2015-05-27 | 中国矿业大学 | Method for reducing height of reinforced concrete frame structure |
| CN104878835A (en) * | 2015-05-19 | 2015-09-02 | 叶长青 | Strip-shaped foundation house rear basement structure |
| CN107119917A (en) * | 2015-05-19 | 2017-09-01 | 叶长青 | Increase the construction method of basement structure behind strip footing house |
| CN106013834A (en) * | 2016-06-03 | 2016-10-12 | 河海大学 | Device and method for storey addition of basement |
| CN106013834B (en) * | 2016-06-03 | 2018-07-24 | 河海大学 | Device and method for basement increasing layer |
| CN107143149A (en) * | 2017-05-24 | 2017-09-08 | 广东省建筑科学研究院集团股份有限公司 | A kind of existing masonry structure building sets up the construction method of basement |
| CN107143149B (en) * | 2017-05-24 | 2019-02-15 | 广东省建筑科学研究院集团股份有限公司 | A kind of existing masonry structure building adds the construction method of basement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102864946B (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102864946B (en) | Process for supporting existing buildings through structural steel and horizontal rachel rod member and additionally adding multilayer basement | |
| CN1837506B (en) | Construction method for excavating box-shape structure over an operating tunnel | |
| CN104652443B (en) | Construction method of the interim horizontal support of deep basal pit as permanent structure beam | |
| CN101509263A (en) | Digging method foundation pit structure of steel cover and plate cover, and construction method | |
| CN104131565B (en) | A kind of against making the construction method that the earthwork is just made to excavate | |
| CN103397660A (en) | Underground construction constructed in assembled mode and construction method of underground construction | |
| CN112575670B (en) | T-shaped rigid frame bridge suitable for tunnel to pass through giant karst cave and construction technology thereof | |
| CN106245927B (en) | A kind of method and building suitable for frame structure building underground increasing layer | |
| CN103410152B (en) | A kind of construction method for long and narrow deep foundation pit earthwork digging | |
| CN102660955B (en) | Quick construction method for foundation pit slope support | |
| CN103711056B (en) | Steel tool-type temporary construction road and construction method thereof | |
| CN103290847A (en) | Inner oblique beam supporting structure for oversized-area deep foundation pit and construction method | |
| CN103114595A (en) | Support method and device of support pile preformed core-soil double-buttress inclined inner-strut foundation ditch | |
| CN212294747U (en) | Pipe jacking well structure | |
| CN111851588A (en) | Pipe jacking well structure and construction method thereof | |
| CN104532957A (en) | Inversed construction method for adding basement in existing building | |
| KR100832490B1 (en) | A foundation method of continuous and cut off wall by overlap casing | |
| CN102359112A (en) | Method for bracing foundation pit by using steel box piles | |
| CN105926642A (en) | Urban underground comprehensive pipe gallery foundation pit support and underground structure external mold integrated structure and construction method | |
| CN209941754U (en) | High-voltage power pipe culvert in-situ protection structure | |
| CN205382942U (en) | Multilayer underground space curtain posture subsurface excavated construction's supporting construction under existing facility | |
| CN210002410U (en) | ring frame support enclosure system capable of being used as retaining wall | |
| CN112627002B (en) | Continuous beam bridge suitable for tunnel to pass through giant karst cave and construction technical method thereof | |
| CN215715515U (en) | Municipal pipe network construction supporting integrated structure under unfavorable geological conditions | |
| CN110863496B (en) | Method for replacing, supporting, excavating and constructing arch center foundation by concrete supporting in stone-filled island building area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |