CN103982054A - Assembly type steel underpinning device for concrete column underpinning and application thereof - Google Patents
Assembly type steel underpinning device for concrete column underpinning and application thereof Download PDFInfo
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- CN103982054A CN103982054A CN201410225686.4A CN201410225686A CN103982054A CN 103982054 A CN103982054 A CN 103982054A CN 201410225686 A CN201410225686 A CN 201410225686A CN 103982054 A CN103982054 A CN 103982054A
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Abstract
The invention discloses an assembly type steel underpinning device for concrete column underpinning and belongs to the building integral shifting technical field. The assembly type steel underpinning device mainly aims at solving the problems that the concrete column underpinning is high in cost, low in efficiency and unsafe. A pair of underpinning steel beams and a pair of connecting short beams are placed on the bilateral sides of an underpinned column respectively; four sides of a concrete column are clamped through pre-tightening bolts; part of column loads borne through a short beam which is hung in the air are transferred to the underpinning steel beams through two end portions of the short beam which is hung in the air after the concrete column and a foundation are cut off and separated from each other; loads transferred from the underpinned column are transferred to a lower rail and the foundation through travelling mechanisms which are arranged on the lower portions of the underpinning steel beams respectively. According to the assembly type steel underpinning device for the concrete column underpinning, the use is safe and reliable, block assembly is achieved, repeated use can be achieved, installation and detachment are rapid, the construction speed is high, and the concrete column underpinning structure is green and economic.
Description
Technical field
The present invention relates to whole building displacement technical field, relate in particular to concrete column and underpin with assembled steel underpinning device and application process thereof.
Background technology
Whole building displacement is a special industry of builing industry, has played very important effect in city reconstruction.Underpinning device is the important structure in building translation, and at present to underpin be mainly to adopt cast-in-situ steel reinforced concrete to underpin beam to the concrete column in domestic construction thing translation engineering, has single beam type and two-beam type under post to underpin two kinds.
The support and change method that single beam type underpins is: on the lower railway steel plate of having constructed, place roller bearing (or coaster, slide block), on roller bearing, lay the steel plate (or channel-section steel) that gets on the right track also as the bed die that underpins beam (beam gets on the right track), hole according to underpining vertical being arranged on concrete column of muscle of beam, to underpin assembling reinforcement after the vertical muscle prick post of beam, then install template and build and underpin beam concrete, reach after designing requirement wait underpining beam concrete strength, in the space underpining between beam bottom and lower railway, will be underpined post blocks with former basic separation, after post blocks, its load of bearing is by underpining beam, the roller bearing underpining under beam reaches lower railway and basis.Before building moving, need the lower railway within the scope of wide column section (or column section is high) degree (containing lower railway steel plate) to carry out.The whole load of bearing that the major defect that single beam type underpins is underpined post is mainly by reaching and underpin beam with underpining two bonding surfaces that beam is combined, and the bearing capacity of bonding surface is on the low side, is generally only applicable to the concrete column less with load and underpins.
The support and change method that two-beam type underpins is: underpinning structure underpins beam (beam gets on the right track) and is connected short beam perpendicular to two of moving direction and forms by two that are parallel to moving direction, underpin beam and be connected short beam and formed four sides packaging type thick pillar corbel and change underpining post, connect short beam and play and connect two and underpin beam and increase the effect that is underpined post and underpinning structure bonding surface.There is roller bearing the below that underpins beam, and roller bearing is vertical with moving direction, connects short beam two ends and underpins beam and be connected, unsettled below it.On the lower railway steel plate of having constructed, place roller bearing (or coaster, slide block), on roller bearing, lay the steel plate (or channel-section steel) that gets on the right track also as the bed die that underpins beam (beam gets on the right track), after underpining beam and short beam reinforcing bar binding and completing, install template and build and underpin beam, short beam concrete, reach after designing requirement wait underpining beam concrete strength, in space between underpinning structure bottom and lower railway, will be underpined post and block and separate with former basis, after post blocks, its load of bearing reaches lower railway and basis by the roller bearing that underpins beam and short beam, underpin under beam.
Underpin method with respect to single beam type under post, twin beams underpins the advantage that tool is safe, speed of application is fast; But the construction period of above-mentioned support and change method is all subject to the concrete strength restriction of rise time, and need to consume the non-renewable resources such as some cement, sandstone, template.Generally this concrete beam shortcoming is: labour intensity is large, the amount of labour used is many, consumption of natural resource is many, long construction period.
For example, Chinese utility model patent CN2490261Y discloses the shaped steel underpinning device of a kind of house post, this device forms a quadrilateral frame by two H shaped steel and two channel-section steels, between two H shaped steel, be also provided with bolt, between two channel-section steels, be provided with bolt, between H shaped steel and channel-section steel, be welded to connect, the two ends of channel-section steel are welded on the web place of H shaped steel.Underpin although use this device construction to realize, because needing to fill concrete material in two H shaped steel and two channel-section steels, therefore belong to thick pillar corbel and change mode, cast-in-place concrete is the major defect that the method exists.
For example, Chinese patent application CN102661056A discloses a kind of prestressing technique that adopts and has carried out the device that reinforced concrete post underpins, underpin bearing capacity by improving the raising of new and old concrete boundary pressure, by build reinforced concrete mount post beam in the surrounding that is underpined reinforced concrete pile, in the outside surrounding of described reinforced concrete mount post beam, constraint steel plate being set respectively goes along with sb. to guard him, presstressed reinforcing steel is through being arranged on the reserved circular hole being reserved on constraint steel plate, apply prestressing force by prestressed reinforcement of tensioning, the device of this invention has utilized the concrete principle that performance improves and interfacial pressure increasing friction force increases under three-dimensional constraints, utilize more efficiently material property, underpin load applied widely.Belong to equally thick pillar corbel and change mode, cast-in-place concrete remains the major defect that the method exists.
Chinese patent CN101429819A discloses a kind of body of wall support and change method, the steps include: first to build underpinning, body of wall is clamped in sandwich wall beam and places shift unit from body of wall both sides with sandwich wall beam again, finally body of wall is blocked, make the power of building pass to sandwich wall beam by body of wall, sandwich wall beam is passed on underpinning by shift unit again, and its contribution is: between sandwich wall beam and body of wall, also apply normal stress frictional force.The method, change although solved above-mentioned thick pillar corbel the shortcoming that mode cast-in-place concrete exists, realize easy construction, fast, construction period is short, and steel work can reusable advantage, but it is only suitable for underpining of body of wall, due to the structure of concrete column and stressed and body of wall difference is very large, cannot be applied to concrete column and underpin.
Summary of the invention
The present invention is directed to the deficiency that the steel concrete underpining for concrete column in existing building translation underpins beam, a kind of safe and reliable, piecemeal assembling, reusable, Fast Installation and dismounting, the fast concrete column of speed of application assembled steel underpinning device are provided.
The present invention also provides the concrete application process of concrete column assembled steel underpinning device.
The present invention solves the scheme that its technical problem takes:
A kind of concrete column underpins uses assembled steel underpinning device, be included in the underpining girder steel and connect and underpin the horizontal pretension bolt of girder steel of a pair of symmetry of moving direction setting, the described girder steel that underpins is placed on lower railway and basis by the walking mechanism of its underpart, it is characterized in that, a pair of symmetrically arranged short beam is connected to two by Force transmission parts and underpins between girder steel, longitudinally pretension bolt is coupled together described short beam through underpining post, is underpined post and is positioned at a pair of square structure that girder steel and a pair of short beam form and clamped that underpins; Described horizontal pretension bolt at least comprises two groups of side pretension bolts, and side pretension bolt lays respectively at and underpined post both sides and be horizontally through short beam.
Described Force transmission parts comprises being arranged on the horizontal groove of short beam both ends of the surface and being arranged on and underpins girder steel and the short beam force transmitting board near the protrusion on side, and described force transmitting board is underpining the horizontal groove that is positioned at short beam end face when girder steel and short beam are installed.
Aforesaid horizontal groove and force transmitting board adopt rectangle connected structure.
Aforesaid horizontal groove and force transmitting board adopt dovetail connected structure.
Aforementioned force transmitting board, by two sections of settings, lays respectively at the both sides that underpined post.
Described horizontal pretension bolt also comprises and is horizontally through the middle part pretension bolt that is underpined post.
Described walking mechanism be in coaster, roller bearing or sliding support one of.
A kind of concrete column underpins the application process with assembled steel underpinning device: a pair of girder steel and a pair of connection short beam of underpining is placed on and underpined the both sides of post and by pretension bolt, concrete column four sides clamped, after concrete column and basis are blocked and are separated, the part post load that unsettled short beam is born by its both ends is passed to and is underpined girder steel, underpins the walking mechanism of girder steel by its underpart and is reached lower railway and basis by underpining the whole load that post transmits.
Concrete steps are as follows:
1) hole being underpined on post by short beam bolt hole position and diameter, when being underpined column cross-section size when larger, can hole being underpined on post row again by underpining girder steel bolt hole position and diameter in another direction that is underpined post,
2) remove underpin on the cylinder of steel girder erection position plaster and dust after, water washes down, and smears the cement mortar screeding layer that approximately 5～10mm is thick, will underpin girder steel and short beam is mounted to precalculated position before mortar initial set;
When installation, should first be placed in pairs by underpining girder steel the concrete column two sides that are parallel to moving direction, underpin girder steel and be held in place in the walking mechanism on lower railway plate; Connecting short beam is underpining on the force transmitting board protruding girder steel side by the recess supports at its two ends;
The erection sequence of pretension bolt is: first horizontal pretension bolt passed and underpins girder steel, short beam, and tentatively fastening, make to underpin girder steel bottom surface or end face in level, and leveling mortar is slightly extruded below on underpining girder steel; Again longitudinal pretension bolt is underpined to post through short beam, quilt, and tentatively fastening, make short beam bottom surface or end face in level, and leveling mortar is slightly extruded below on short beam, in the time of preliminary fastening horizontal pretension bolt and longitudinal pretension bolt, should ensure to have between short beam end face and girder steel side the space of 2～3mm simultaneously;
3) after leveling mortar reaches design strength, according to the design pretightning force of pretension bolt fastening bolt alternately again, now underpined underpining girder steel and short beam and being underpined post by pretension bolt and clamp of post four sides with torque wrench, underpin steel girder erection and complete;
4) in the bottom that underpins girder steel, to be underpined post and block and separate with former basis, after being underpined post and disconnecting, be underpined post and reach the load on former basis, by underpining girder steel and short beam and being finally passed to the walking mechanism of bottom by underpining girder steel, then reach lower railway and basis by walking mechanism;
5) after building translation puts in place, will be underpined post and new basis is connected, be reached after design strength in connecting material, and unclamp pretension bolt and will underpin girder steel and short beam removal and prepare against and reuse.
The invention has the beneficial effects as follows:
The present invention is simple in structure, from heavy and light; Stressed clear and definite; Can mount and dismount easily; Can repeatedly reuse; Can effectively reduce the workload that in frame structure building translation engineering, concrete column underpins; Reduce labour intensity; Shorten the engineering time.This underpins girder steel in the situation that being equal to concrete and underpining beam section size, its deadweight only has 1/2～1/3 of concrete beam, steel using amount is about 3～5 times of concrete beam, consider in the situation of whole underpinning structure construction costs, its cost is about concrete and underpins 2～3 times of beam, if reuse 10 times, cost is only for concrete underpins 1/5～1/3 of beam, in the situation that being repeatedly used, economic benefit is obvious; After underpining steel girder erection and completing, both can carry out being underpined the construction of blocking of concrete column, reduce the stand-by period that while adopting concrete to underpin beam, concrete strength increases, therefore the underpinning construction duration can reduce to and adopt concrete to underpin 1/3～1/4 of beam, can effectively shorten the engineering time of frame structure building translation, save a large amount of labour cost.Building moves to after assigned address, is connected with the basis of reposition underpining post, and the strength of materials to be connected reaches after designing requirement, can will underpin beam, coaster or roller bearing and lower railway plate and reclaim, in order to using next time.
The present invention has not only overcome long, large shortcoming influenced by ambient temperature (impact that low temperature increases concrete strength is larger) of current frame structure building translation engineering time mid-early stage, and reduced a large amount of resources and labour's consumption than adopting concrete to underpin beam, be the underpinning structure of a kind of green, economy.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is that structure composition of the present invention splits schematic diagram;
Fig. 3 is underpined post to block front front view;
Fig. 4 is by the front view after underpining post and blocking;
Fig. 5 is by the left view after underpining post and blocking.
In figure: 1 underpins girder steel, 2 short beams, 3 horizontal pretension bolts, 31 horizontal pre-load nuts, 4 in length and breadth to pretension bolt, and 5 are underpined post, 6 lower railway, 7 track plates, 8 coasters, 11 force transmitting boards, 21 grooves.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated:
As shown in Figure 1 and Figure 2.
A kind of concrete column underpins uses assembled steel underpinning device, be included in the underpining girder steel 1 and connect and underpin the horizontal pretension bolt 3 of girder steel of a pair of symmetry of moving direction setting, the described girder steel 1 that underpins is placed on lower railway 6 and basis by the walking mechanism of its underpart, a pair of symmetrically arranged short beam 2 is connected to two by Force transmission parts and underpins between girder steel 1, and longitudinally pretension bolt 4 is coupled together described short beam 2 through underpining post 5.Underpined post 5 and be positioned at a pair of square structure that girder steel 1 and a pair of short beam 2 formed and clamped that underpins.Described horizontal pretension bolt 3 at least comprises two groups of side pretension bolts, and side pretension bolt lays respectively at and underpined post both sides and be horizontally through short beam.After concrete column (by being underpined post) and basis are blocked and are separated, the post load that unsettled short beam 2 is born by its both ends is passed to and is underpined girder steel, underpins the walking mechanism of girder steel by its underpart and is reached lower railway 6 and basis by underpining the whole load that post 5 transmits.Described walking mechanism is coaster 8 or adopts roller bearing or sliding support.On lower railway 6, be provided with track plates 7, coaster 8 is placed on track plates 7.
Conventionally, laterally pretension bolt 3 only depends on two groups of (6 every group, above-below direction is uniform) side pretension bolts, affects to reduce because underpined boring on post 5 at quilt the intensity that is underpined post.When being underpined post 5 sectional dimensions when larger, described horizontal pretension bolt 3 also comprises and is horizontally through the middle part pretension bolt (a group 3, above-below direction is uniform) that is underpined post.Laterally pretension bolt 3 is connected with horizontal pre-load nut 31.Longitudinally pretension bolt 4 is connected with longitudinal pre-load nut 41.
Described Force transmission parts comprises being arranged on the horizontal groove 21 of short beam 2 both ends of the surface and being arranged on and underpins girder steel 1 and the force transmitting board 11 of short beam near the protrusion on side, and described force transmitting board 11 is underpining the horizontal groove 21 that is positioned at short beam end face when girder steel 1 and short beam 2 are installed.Horizontal groove 21 and force transmitting board 11 adopt rectangle connected structure, also can adopt dovetail connected structure.Aforementioned force transmitting board 11, by two sections of settings, lays respectively at the both sides that underpined post 5, in same level position.
In the structural representation of the present invention providing at Fig. 1, Fig. 2, underpin girder steel 1 (girder steel gets on the right track) for steel work box cuts section bar, underpin girder steel 1 mounted in pairs in the two sides that underpined post 5 that are parallel to moving direction; Short beam 2 mounted in pairs are underpining two other side that is underpined post 5 between girder steel 1, and are supported on the force transmitting board 11 that underpins girder steel 1 by horizontal groove 21.Underpin on girder steel 1 and short beam 2 webs and all have pre-drilled bolt hole, be respectively used to install horizontal pretension bolt 3 and longitudinal pretension bolt 4, laterally pretension bolt 3 and longitudinal pretension bolt 4 are high-strength bolt, its effect be by underpining girder steel 1, short beam 2 is clamped in the side that is underpined post 5, and realize effectively the underpining of concrete column (test shows that the coefficient of maximum static friction of steel plate and concrete surface is 0.65～0.70) with being underpined stiction that post side produced by girder steel side, the while dowel action of prick post bolt also can transmitting portions vertical force.After installation, short beam 2 end faces and underpin the space that retains 2～3mm between girder steel 1 side, all act on by underpining girder steel 1 side that is underpined post with the pretightning force that ensures horizontal pretension bolt 3.
Described underpin girder steel and short beam adopts steel work box to cut section bar, technique is simple, and cost is low.
Concrete implementation step is as follows:
1) underpined boring on post 5 by short beam 2 bolt hole positions and diameter, totally 2 of above-below directions, to install longitudinal pretension bolt 4; When being underpined column cross-section size when larger, can underpined row boring again on post by underpining girder steel 1 bolt hole position and diameter in another direction that is underpined post 5, totally 3 of above-below directions, to install the horizontal pretension bolt 3 in middle part.
2) remove underpin girder steel 1 installation position underpined on post 5 cylinders plaster and dust after, water washes down, and smears the cement mortar screeding layer that approximately 5～10mm is thick, will underpin girder steel 1 and short beam 2 is mounted to precalculated position before mortar initial set;
When installation, should first be placed in pairs by underpining girder steel 1 the concrete column two sides that are parallel to moving direction, underpin girder steel 1 and be held in place on the coaster 8 on lower railway plate 7; Connecting short beam 2 is supported on and is underpined on the force transmitting board 11 protruding girder steel side by the groove 21 at its two ends.
The erection sequence of pretension bolt is: first horizontal pretension bolt 3 passed and underpins girder steel 1, short beam 2, and tentatively fastening, make to underpin girder steel 1 bottom surface (or end face) in level, and leveling mortar is slightly extruded below on underpining girder steel 1; Again longitudinal pretension bolt 4 is underpined to post 5 through short beam 2, quilt, and tentatively fastening, make short beam 2 bottom surfaces (or end face) in level, and leveling mortar is slightly extruded below on short beam 2, in the time of preliminary fastening horizontal pretension bolt 3 and longitudinal pretension bolt 4, should ensure to have between short beam 2 end plates and girder steel 1 side the space of 2～3mm simultaneously.
3) after leveling mortar reaches design strength, with torque wrench according to the design pretightning force of pretension bolt fastening bolt alternately again, now underpined underpining girder steel 1 and short beam 2 and being underpined post by pretension bolt and clamp of post 5 four sides, underpin steel girder erection and complete, Fig. 3 is underpined post to block front front view.
4) in the bottom that underpins girder steel, to be underpined post and block and separate with former basis, after being underpined post and disconnecting, be underpined post and reach the load on former basis, by underpining girder steel and short beam and being finally passed to the walking mechanism of bottom by underpining girder steel, then reach lower railway and basis by walking mechanism; Fig. 4 is by the front view after underpining post and blocking; Fig. 5 is by the left view after underpining post and blocking.
5) after building translation puts in place, will be underpined post and new basis is connected, be reached after design strength in connecting material, and unclamp pretension bolt and will underpin girder steel and short beam removal and prepare against and reuse.
Claims (9)
1. a concrete column underpins and uses assembled steel underpinning device, be included in the underpining girder steel and connect and underpin the horizontal pretension bolt of girder steel of a pair of symmetry of moving direction setting, the described girder steel that underpins is placed on lower railway and basis by the walking mechanism of its underpart, it is characterized in that, a pair of symmetrically arranged short beam is connected to two by Force transmission parts and underpins between girder steel, longitudinally pretension bolt is coupled together described short beam through underpining post, is underpined post and is positioned at a pair of square structure that girder steel and a pair of short beam form and clamped that underpins; Described horizontal pretension bolt at least comprises two groups of side pretension bolts, and side pretension bolt lays respectively at and underpined post both sides and be horizontally through short beam.
2. concrete column according to claim 1 underpins and uses assembled steel underpinning device, it is characterized in that, described Force transmission parts comprises being arranged on the horizontal groove of short beam both ends of the surface and being arranged on and underpins girder steel and the short beam force transmitting board near the protrusion on side, and described force transmitting board is underpining the horizontal groove that is positioned at short beam end face when girder steel and short beam are installed.
3. concrete column according to claim 2 underpins and uses assembled steel underpinning device, it is characterized in that, described horizontal groove and force transmitting board adopt rectangle connected structure.
4. concrete column according to claim 2 underpins and uses assembled steel underpinning device, it is characterized in that, described horizontal groove and force transmitting board adopt dovetail connected structure.
5. underpin and use assembled steel underpinning device according to the concrete column described in claim 2 or 3, it is characterized in that, described force transmitting board, by two sections of settings, lays respectively at the both sides that underpined post.
6. concrete column according to claim 5 underpins and uses assembled steel underpinning device, it is characterized in that, described horizontal pretension bolt also comprises and is horizontally through the middle part pretension bolt that is underpined post.
7. concrete column according to claim 1 underpins and uses assembled steel underpinning device, it is characterized in that, described walking mechanism be in coaster, roller bearing or sliding support one of.
8. a concrete column underpins the application process with assembled steel underpinning device, it is characterized in that, a pair of girder steel and a pair of connection short beam of underpining is placed on and underpined the both sides of post and by pretension bolt, concrete column four sides clamped, after concrete column and basis are blocked and are separated, the part post load that unsettled short beam is born by its both ends is passed to and is underpined girder steel, underpins the walking mechanism of girder steel by its underpart and is reached lower railway and basis by underpining the whole load that post transmits.
9. application process according to claim 8, is characterized in that, concrete steps are as follows:
1) hole being underpined on post by short beam bolt hole position and diameter, when being underpined column cross-section size when larger, can hole being underpined on post row again by underpining girder steel bolt hole position and diameter in another direction that is underpined post;
2) remove underpin on the cylinder of steel girder erection position plaster and dust after, water washes down, and smears the cement mortar screeding layer that approximately 5～10mm is thick, will underpin girder steel and short beam is mounted to precalculated position before mortar initial set;
When installation, should first be placed in pairs by underpining girder steel the concrete column two sides that are parallel to moving direction, underpin girder steel and be held in place in the walking mechanism on lower railway plate; Connecting short beam is underpining on the force transmitting board protruding girder steel side by the recess supports at its two ends;
The erection sequence of pretension bolt is: first horizontal pretension bolt passed and underpins girder steel, short beam, and tentatively fastening, make to underpin girder steel bottom surface or end face in level, and leveling mortar is slightly extruded below on underpining girder steel; Again longitudinal pretension bolt is underpined to post through short beam, quilt, and tentatively fastening, make short beam bottom surface or end face in level, and leveling mortar is slightly extruded below on short beam, in the time of preliminary fastening horizontal pretension bolt and longitudinal pretension bolt, should ensure to have between short beam end plate and girder steel side the space of 2～3mm simultaneously;
3) after leveling mortar reaches design strength, according to the design pretightning force of pretension bolt fastening bolt alternately again, now underpined underpining girder steel and short beam and being underpined post by pretension bolt and clamp of post four sides with torque wrench, underpin steel girder erection and complete;
4) in the bottom that underpins girder steel, to be underpined post and block and separate with former basis, after being underpined post and disconnecting, be underpined post and reach the load on former basis, by underpining girder steel and short beam and being finally passed to the walking mechanism of bottom by underpining girder steel, then reach lower railway and basis by walking mechanism;
5) after building translation puts in place, will be underpined post and new basis is connected, be reached after design strength in connecting material, and unclamp pretension bolt and will underpin girder steel and short beam removal and prepare against and reuse.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410225686.4A CN103982054B (en) | 2014-05-26 | 2014-05-26 | Concrete column underpins with assembled steel underpinning device and application thereof |
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| CN201410225686.4A CN103982054B (en) | 2014-05-26 | 2014-05-26 | Concrete column underpins with assembled steel underpinning device and application thereof |
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| CN108005404A (en) * | 2018-01-15 | 2018-05-08 | 上海建工四建集团有限公司 | Cylinder underpinning device and construction method |
| CN109972857A (en) * | 2019-04-30 | 2019-07-05 | 同济大学建筑设计研究院(集团)有限公司 | A kind of embedded fashioned iron formula underpins node |
| CN110056204A (en) * | 2019-04-19 | 2019-07-26 | 同济大学建筑设计研究院(集团)有限公司 | A kind of out no-conhesion prestressing underpins node |
| CN110158983A (en) * | 2019-05-30 | 2019-08-23 | 同济大学建筑设计研究院(集团)有限公司 | A kind of self-balancing type steel underpinning device |
| CN110541582A (en) * | 2019-09-09 | 2019-12-06 | 河南文博建设工程有限公司 | Stepping type building translation method |
| CN112963013A (en) * | 2021-02-20 | 2021-06-15 | 龙菊蓉 | Concrete column replacement device and method |
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| CN110056204A (en) * | 2019-04-19 | 2019-07-26 | 同济大学建筑设计研究院(集团)有限公司 | A kind of out no-conhesion prestressing underpins node |
| CN110056204B (en) * | 2019-04-19 | 2024-03-19 | 同济大学建筑设计研究院(集团)有限公司 | External unbonded prestress underpinning node |
| CN109972857A (en) * | 2019-04-30 | 2019-07-05 | 同济大学建筑设计研究院(集团)有限公司 | A kind of embedded fashioned iron formula underpins node |
| CN109972857B (en) * | 2019-04-30 | 2024-03-19 | 同济大学建筑设计研究院(集团)有限公司 | Embedded steel type underpinning node |
| CN110158983A (en) * | 2019-05-30 | 2019-08-23 | 同济大学建筑设计研究院(集团)有限公司 | A kind of self-balancing type steel underpinning device |
| CN110158983B (en) * | 2019-05-30 | 2024-03-19 | 同济大学建筑设计研究院(集团)有限公司 | Self-balancing steel underpinning device |
| CN110541582A (en) * | 2019-09-09 | 2019-12-06 | 河南文博建设工程有限公司 | Stepping type building translation method |
| CN112963013A (en) * | 2021-02-20 | 2021-06-15 | 龙菊蓉 | Concrete column replacement device and method |
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| CN103982054B (en) | 2016-04-13 |
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