CN108277937A - A kind of reinforced concrete stairs seismic reinforcing structure and its remodeling method - Google Patents
A kind of reinforced concrete stairs seismic reinforcing structure and its remodeling method Download PDFInfo
- Publication number
- CN108277937A CN108277937A CN201810267265.6A CN201810267265A CN108277937A CN 108277937 A CN108277937 A CN 108277937A CN 201810267265 A CN201810267265 A CN 201810267265A CN 108277937 A CN108277937 A CN 108277937A
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- Prior art keywords
- steel plate
- staircase boards
- groove
- platform pedestal
- lower platform
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- 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
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 21
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007634 remodeling Methods 0.000 title claims abstract description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229920001971 elastomer Polymers 0.000 claims abstract description 32
- 239000005060 rubber Substances 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 239000004567 concrete Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000011505 plaster Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/027—Preventive constructional measures against earthquake damage in existing buildings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
A kind of reinforced concrete stairs seismic reinforcing structure and its remodeling method are related to a kind of stair seismic reinforcing structure and its remodeling method.It is fixed with staircase boards between upper mounting plate pedestal and lower platform pedestal, lower platform pedestal is arranged with the cut-out of staircase boards link position level, the section of lower platform pedestal is set along its width direction there are two lower groove, the section of staircase boards is set along its width direction there are two upper groove, per installation between corresponding upper groove and lower groove, there are one lead core rubber supports, and staircase boards bottom is pasted with FRP and is reinforced.Structure power transmission mechanism is clear, reasonable, is flexibly connected using lead core rubber support between staircase boards and lower platform pedestal, mitigates geological process.
Description
Technical field
The present invention relates to a kind of stair seismic reinforcing structure and its remodeling method, especially a kind of reinforced concrete stairs is anti-
Shake ruggedized construction and its remodeling method.
Background technology
All previous seimic disaster census is found both at home and abroad, and reinforced concrete frame structure stair often occur under geological process
Serious destruction, most common failure mode are exactly and landing slab（Beam）Connected frame column destroys, this is because stair
And landing slab（Beam）Presence to frame can play the role of " K " type support, make frame column formed short column, it is pre- to change frame column
The force modes of phase, occur failure by shear under geological process or curved scissors destroys, since the failure of staircase frame column is exited
Work may also cause the continuous collapse of total.In actual seismic, there is complexity between stair and agent structure component
Interaction force, but in seismic design of structures, stair are the seismic Calculations that structure is not involved in as non-structural element, are ignored
Adverse effect of the presence of stair to structure.
In view of the experience of all previous earthquake, earthquake resistant code in 2010 has explicitly pointed out：" in view of the gangboard etc. of stair has
The stress of diagonal brace has obvious influence, it is proposed that give with due regard in Structure Calculation to the overall stiffness of structure ",
Therefore the junction of floor and agent structure is used sliding support connection type by various fabricated constructions newly-built at present, to disappear
Except stair are to the active force and adverse effect of agent structure component.
However, for the reinforced concrete frame structure largely built according to old Specification Design, how to mitigate
Stair are to the adverse effect of agent structure shock resistance, the problem of being current urgent need to resolve.
Invention content
To solve the problems in the background art, the present invention provide a kind of reinforced concrete stairs seismic reinforcing structure and
Its remodeling method.
Realize that above-mentioned purpose, the present invention take following technical proposals：A kind of reinforced concrete stairs seismic reinforcing structure, packet
Lower platform pedestal, staircase boards, upper mounting plate pedestal are included, stair are fixedly installed between the upper mounting plate pedestal and lower platform pedestal
Plate, the reinforced concrete stairs seismic reinforcing structure further include two lead core rubber supports, the lower platform pedestal with
The cut-out setting of staircase boards link position level, the section of lower platform pedestal set that there are two lower grooves along its width direction, described
The sections of staircase boards set there are two upper groove along its width direction, described two upper grooves and two lower grooves
Be arranged in a one-to-one correspondence, and two upper grooves with staircase boards rear penetrate through be arranged, two lower grooves with lower platform pedestal rear
Perforation setting, per installation between corresponding upper groove and lower groove, there are one lead core rubber supports, and staircase boards bottom is pasted with FRP
It is reinforced.
A kind of remodeling method of reinforced concrete stairs seismic reinforcing structure of the present invention, includes the following steps：
Step 1：Existing lower platform pedestal and staircase boards link position concrete are removed and cut off reinforcing bar；
Step 2：Two lower grooves are dug along its width direction in the section of lower platform pedestal, are dug in the section of staircase boards
If two and the one-to-one upper groove of lower groove；
Step 3：Two lead core rubber supports are respectively put between corresponding upper groove and lower groove, and pass through fixing bolt
Installation is fixed；
Step 4：Fireproof foam adhesive is filled between lower platform pedestal and staircase boards；
Step 5：FRP is pasted in staircase boards bottom to be reinforced, is first surface-treated staircase boards bottom, removes plastering
Layer exposes concrete and polishes flat, and then FRP is pasted onto on the concrete to polish flat by high-strength epoxy resin.
Compared with prior art, the beneficial effects of the invention are as follows：
1. structure of the invention power transmission mechanism is clear, reasonable, flexible using lead core rubber support between staircase boards and lower platform pedestal
Connection, can both allow that relative deformation occurs between staircase boards and lower platform pedestal under geological process, but also can pass through
Lead core rubber support consume energy, mitigate geological process, due to lead core rubber support energy-dissipating and shock-absorbing act on, staircase relative to its
Adjacent structure division is safer, can be used as the temporary shelter place in earthquake, while also can preferably play it as emergent
The effect of fire escape；
2. the prior art after being transformed reinforcing to stair, does not consider its stress after the boundary condition change of staircase boards both ends
Variation, staircase boards itself may destroy under live load and self gravitation effect, and the present invention is to avoid staircase boards two
After holding boundary condition to change, the variation of staircase boards stress itself and the deficiency of arrangement of reinforcement reinforce staircase boards using FRP, side
Just safety；
3., can be by replacing fast quick-recovery normal usage function after major injury occurs for lead core rubber support under geological process.
Description of the drawings
Fig. 1 is the structural schematic diagram of the reinforced concrete stairs seismic reinforcing structure of the present invention；
Fig. 2 is the axonometric drawing of the lead core rubber support of the present invention；
Fig. 3 is the A direction views of Fig. 1.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in the present invention
It states, it is clear that described embodiment is only a part of the embodiment of invention, instead of all the embodiments, based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
Specific implementation mode one：As shown in Fig. 1 ~ Fig. 3, the invention discloses a kind of reinforced concrete stairs seismic hardening knots
Structure, including lower platform pedestal 1, staircase boards 2, upper mounting plate pedestal 3, it is fixed between the upper mounting plate pedestal 3 and lower platform pedestal 1
Staircase boards 2 are provided with, the reinforced concrete stairs seismic reinforcing structure further includes two lead core rubber supports 6, described
Lower platform pedestal 1 is arranged with the cut-out of 2 link position level of staircase boards, and the section of lower platform pedestal 1 is equipped with along its width direction
Two lower grooves 5, the sections of the staircase boards 2 set that there are two upper groove 4, described two upper grooves along its width direction
4 are arranged in a one-to-one correspondence with two lower grooves 5, and two upper grooves 4 penetrate through with 2 rear of staircase boards and are arranged, under two
Groove 5, which is penetrated through with 1 rear of lower platform pedestal, to be arranged, and per installation between corresponding upper groove 4 and lower groove 5, there are one lead for retractable pencil rubbers
Glue bearing 6,2 bottom of staircase boards are pasted with FRP7 and are reinforced.
Specific implementation mode two：As shown in Fig. 2, present embodiment is made furtherly to specific implementation mode one
It is bright, two lead core rubber supports 6 include upper junction steel plate 6-1, rubber protection cylinder 6-2, lower junction steel plate 6-3,
Lead for retractable pencil 6-6, more internal rubber 6-4 and more internal steel plate 6-5, the upper junction steel plate 6-1 and lower junction steel plate 6-3 are equal
For circular steel plate and horizontal alignment setting up and down, the lower surfaces upper junction steel plate 6-1 center are fixedly installed round sealing plate 6-8,
The upper surfaces the lower junction steel plate 6-3 center is fixedly installed lower round sealing plate 6-7, and the rubber protects cylinder 6-2 to insert
Between the upper circle sealing plate 6-8 and lower round sealing plate 6-7, the lead for retractable pencil 6-6 shapes are round bar shape and coaxially set
It being placed in inside rubber protection cylinder 6-2, the more internal rubber 6-4 and more internal steel plate 6-5 shapes are annular shape,
And it is arranged alternatively up and down between rubber protects cylinder 6-2 and lead for retractable pencil 6-6.
Specific implementation mode three：As shown in Figure 1 and 2, present embodiment is made furtherly to specific implementation mode two
Bright, the upper junction steel plate 6-1 and lower junction steel plate 6-3 of each lead core rubber support 6 are uniform along its circumferencial direction respectively
Equipped with multiple bolt mounting holes, each bolt mounting holes are corresponding with a fixing bolt, the upper junction steel plate 6-1
And lower junction steel plate 6-3 is affixed by fixing bolt described in more and corresponding upper groove 4 and 5 groove bottom of lower groove respectively.
Specific implementation mode four：As shown in Fig. 1 ~ 3, present embodiment, which discloses in a kind of specific implementation mode one ~ tri-, appoints
A kind of remodeling method of reinforced concrete stairs seismic reinforcing structure described in one specific implementation mode, the remodeling method packet
Include following steps：
Step 1：Existing lower platform pedestal 1 and 2 link position concrete of staircase boards are removed and cut off reinforcing bar；
Step 2：Two lower grooves 5 are dug along its width direction in the section of lower platform pedestal 1, in the section of staircase boards 2
Dig two and 5 one-to-one upper groove 4 of lower groove；
Step 3：Two lead core rubber supports 6 are respectively put between corresponding upper groove 4 and lower groove 5, and pass through fixed spiral shell
Installation is fixed in bolt；
Step 4：Fireproof foam adhesive is filled between lower platform pedestal 1 and staircase boards 2；
Step 5：FRP7 is pasted in 2 bottom of staircase boards to be reinforced, and is first surface-treated 2 bottom of staircase boards, removing is smeared
Grieshoch exposes concrete and polishes flat, and then FRP7 is pasted onto on the concrete to polish flat by high-strength epoxy resin.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in the form of others dress bodies.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all in the meaning and scope of the condition of equivalent of claim by falling
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (4)
1. a kind of reinforced concrete stairs seismic reinforcing structure, including lower platform pedestal（1）, staircase boards（2）, upper mounting plate pedestal
（3）, the upper mounting plate pedestal（3）With lower platform pedestal（1）Between be fixedly installed staircase boards（2）, it is characterised in that：It is described
Reinforced concrete stairs seismic reinforcing structure further include two lead core rubber supports（6）, the lower platform pedestal（1）With building
Gangboard（2）The cut-out setting of link position level, lower platform pedestal（1）Section set there are two lower groove along its width direction
（5）, the staircase boards（2）Section set there are two upper groove along its width direction（4）, two upper grooves（4）
With two lower grooves（5）It is arranged in a one-to-one correspondence, and two upper grooves（4）And staircase boards（2）Rear perforation setting, two
A lower groove（5）With lower platform pedestal（1）Rear perforation setting, per corresponding upper groove（4）With lower groove（5）Between install
There are one lead core rubber supports（6）, staircase boards（2）Bottom is pasted with FRP（7）It is reinforced.
2. a kind of reinforced concrete stairs seismic reinforcing structure according to claim 1, it is characterised in that：Described two
Lead core rubber support（6）It include upper junction steel plate（6-1）, rubber protect cylinder（6-2）, lower junction steel plate（6-3）, lead for retractable pencil
（6-6）, more internal rubber（6-4）And more internal steel plate（6-5）, the upper junction steel plate（6-1）And lower junction steel plate
（6-3）It is circular steel plate and horizontal alignment setting up and down, upper junction steel plate（6-1）Lower surface center is fixedly installed circle
Sealing plate（6-8）, the lower junction steel plate（6-3）Upper surface center is fixedly installed lower round sealing plate（6-7）, the rubber
Protect cylinder（6-2）It is inserted into the upper round sealing plate（6-8）And lower round sealing plate（6-7）Between, the lead for retractable pencil（6-6）
Shape is round bar shape and is coaxially disposed in rubber protection cylinder（6-2）Inside, the more internal rubber（6-4）And in multilayer
Portion's steel plate（6-5）Shape is annular shape, and is arranged protects cylinder in rubber alternatively up and down（6-2）With lead for retractable pencil（6-6）Between.
3. a kind of reinforced concrete stairs seismic reinforcing structure according to claim 2, it is characterised in that：Described in each
Lead core rubber support（6）Upper junction steel plate（6-1）And lower junction steel plate（6-3）It is uniformly provided with respectively along its circumferencial direction multiple
Bolt mounting holes, each bolt mounting holes are corresponding with a fixing bolt, the upper junction steel plate（6-1）And lower company
Connect steel plate（6-3）Pass through fixing bolt described in more and corresponding upper groove respectively（4）And lower groove（5）Groove bottom is affixed.
4. a kind of transformation of reinforced concrete stairs seismic reinforcing structure according to any claim in claim 1 ~ 3
Method, it is characterised in that：The remodeling method includes the following steps：
Step 1：By existing lower platform pedestal（1）With staircase boards（2）Link position concrete removes and cuts off reinforcing bar；
Step 2：In lower platform pedestal（1）Section dig two lower grooves along its width direction（5）, in staircase boards（2）'s
Section digs two and lower groove（5）One-to-one upper groove（4）；
Step 3：By two lead core rubber supports（6）It is respectively put into corresponding upper groove（4）With lower groove（5）Between, and pass through
Installation is fixed in fixing bolt；
Step 4：In lower platform pedestal（1）With staircase boards（2）Between fill fireproof foam adhesive；
Step 5：In staircase boards（2）Paste FRP in bottom（7）It is reinforced, first by staircase boards（2）Bottom is surface-treated,
It removes coat of plaster and exposes concrete and simultaneously polish flat, then by high-strength epoxy resin by FRP（7）Be pasted onto polish flat it is mixed
On solidifying soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810267265.6A CN108277937A (en) | 2018-03-28 | 2018-03-28 | A kind of reinforced concrete stairs seismic reinforcing structure and its remodeling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810267265.6A CN108277937A (en) | 2018-03-28 | 2018-03-28 | A kind of reinforced concrete stairs seismic reinforcing structure and its remodeling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108277937A true CN108277937A (en) | 2018-07-13 |
Family
ID=62810812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810267265.6A Pending CN108277937A (en) | 2018-03-28 | 2018-03-28 | A kind of reinforced concrete stairs seismic reinforcing structure and its remodeling method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108277937A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915180A (en) * | 2018-08-20 | 2018-11-30 | 柏林 | A kind of steel building stair |
| CN109594833A (en) * | 2018-11-28 | 2019-04-09 | 浙江理工大学 | Prefabricated concrete structure Interlayer seismic isolation method |
| CN110656768A (en) * | 2019-07-24 | 2020-01-07 | 黄瑞鑫 | Shallow foundation stair revolving stage building is rectified and is consolidated and prevent structure of ftractureing |
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| JP2013087427A (en) * | 2011-10-13 | 2013-05-13 | Taisei Corp | Earthquake strengthening structure of building |
| CN203923889U (en) * | 2014-06-17 | 2014-11-05 | 南京同杰桥梁工程技术有限公司 | The high-strength fine and closely woven gauze wire cloth lead core rubber support of putting more energy into |
| CN105421687A (en) * | 2015-12-10 | 2016-03-23 | 广州大学 | Reinforced concrete stair seismic isolation mode and construction method |
| CN105672591A (en) * | 2016-04-12 | 2016-06-15 | 福州大学 | Existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology |
| CN107246159A (en) * | 2017-08-15 | 2017-10-13 | 上海上银置业发展有限公司 | A kind of existing building adds the shockproof ruggedized construction of layer |
| CN206752892U (en) * | 2017-04-12 | 2017-12-15 | 崔赢 | A kind of prefabricated shock insulation staircase structure |
| CN206958154U (en) * | 2017-06-18 | 2018-02-02 | 高峰 | A kind of Architectural Equipment earthquake isolating equipment |
| CN208023855U (en) * | 2018-03-28 | 2018-10-30 | 中国地震局工程力学研究所 | A kind of reinforced concrete stairs seismic reinforcing structure |
-
2018
- 2018-03-28 CN CN201810267265.6A patent/CN108277937A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013087427A (en) * | 2011-10-13 | 2013-05-13 | Taisei Corp | Earthquake strengthening structure of building |
| CN203923889U (en) * | 2014-06-17 | 2014-11-05 | 南京同杰桥梁工程技术有限公司 | The high-strength fine and closely woven gauze wire cloth lead core rubber support of putting more energy into |
| CN105421687A (en) * | 2015-12-10 | 2016-03-23 | 广州大学 | Reinforced concrete stair seismic isolation mode and construction method |
| CN105672591A (en) * | 2016-04-12 | 2016-06-15 | 福州大学 | Existing reinforced concrete plate type stair aseismatic reconstruction structure and construction technology |
| CN206752892U (en) * | 2017-04-12 | 2017-12-15 | 崔赢 | A kind of prefabricated shock insulation staircase structure |
| CN206958154U (en) * | 2017-06-18 | 2018-02-02 | 高峰 | A kind of Architectural Equipment earthquake isolating equipment |
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| CN208023855U (en) * | 2018-03-28 | 2018-10-30 | 中国地震局工程力学研究所 | A kind of reinforced concrete stairs seismic reinforcing structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915180A (en) * | 2018-08-20 | 2018-11-30 | 柏林 | A kind of steel building stair |
| CN109594833A (en) * | 2018-11-28 | 2019-04-09 | 浙江理工大学 | Prefabricated concrete structure Interlayer seismic isolation method |
| CN109594833B (en) * | 2018-11-28 | 2020-09-08 | 浙江理工大学 | Interlayer shock insulation method for prefabricated concrete structure |
| CN110656768A (en) * | 2019-07-24 | 2020-01-07 | 黄瑞鑫 | Shallow foundation stair revolving stage building is rectified and is consolidated and prevent structure of ftractureing |
| CN110656768B (en) * | 2019-07-24 | 2021-05-18 | 绍兴嘉越纺织机械有限公司 | Shallow foundation stair revolving stage building is rectified and is consolidated and prevent structure of ftractureing |
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Application publication date: 20180713 |
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