CN205012345U - Precast reinforced concrete component that non - melting welding multisection is connected - Google Patents
Precast reinforced concrete component that non - melting welding multisection is connected Download PDFInfo
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- CN205012345U CN205012345U CN201520087289.5U CN201520087289U CN205012345U CN 205012345 U CN205012345 U CN 205012345U CN 201520087289 U CN201520087289 U CN 201520087289U CN 205012345 U CN205012345 U CN 205012345U
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 44
- 238000003466 welding Methods 0.000 title claims abstract description 25
- 238000002844 melting Methods 0.000 title claims abstract description 22
- 230000008018 melting Effects 0.000 title claims abstract description 22
- 238000010276 construction Methods 0.000 claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 238000013461 design Methods 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 9
- 239000011083 cement mortar Substances 0.000 claims abstract description 5
- 239000007937 lozenge Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract 1
- 238000005119 centrifugation Methods 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 26
- 238000000034 method Methods 0.000 description 15
- 238000013019 agitation Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 239000004568 cement Substances 0.000 description 8
- 239000002689 soil Substances 0.000 description 8
- 238000012407 engineering method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011440 grout Substances 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 4
- 238000005056 compaction Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 241001417495 Serranidae Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model relates to a precast reinforced concrete component that non - melting welding multisection is connected. The non - melting welding multisection connection structure of this precast reinforced concrete member comprises the pre -buried steel sheet of L type, constructional reinforcement and apron, will lap the laminating at the pre -buried steel sheet side of L type in the stake with a lap -joint during construction to lock with the bolt, the precast reinforced concrete member adopt 2 blocks of pre -buried steel sheets of L type, deuterogamy constructional reinforcement and 2 apron simultaneously in its joint department and form, the constructional reinforcement with the anchor of pier nose form on the pre -buried steel sheet of L type, form the precast reinforced concrete member with their casting in the concrete, the pre -buried steel sheet of L type, adopt the design to have a wedge face of 30-50, the apron design has 30-50 concave grooves, the apron, adopt the bolt to compress tightly the pre -buried steel sheet of L type with cover connection in multisection stake junction. The stake of prefabricated centrifugation side reserve the recess in the stake side, recycle cement mortar and carry out vertical stagnant water with being connected.
Description
Technical field
The utility model relates to a kind of prefabricated reinforced concrete component adopting non-melting welding more piece to connect for resisting retaining design and the construction method thereof of soil body lateral force, is mainly used in underground exterior-protected structure.
Background technology
The Application comparison of prefabricated units in major structure of construction is ripe, and stressed relatively clearer and more definite during agent structure use prefabricated units, the engineering mechanical characteristic therefore for prefabricated units is easily controlled.And in underground exterior-protected structure engineering, owing to there is a large amount of uncontrollable factor, also high all the more for use prefabricated units technological requirement.In underground exterior-protected structure, major part structural protective system component original adoption be the mode of cast-in-place, this mode has flexible operation, Components Shape, size and length can be adjusted as required, shortcoming is the space enclosing structure associated components of field fabrication, all need 28 days curing times, add the duration.In addition, the construction technology quality of field fabrication limits by on-the-spot objective condition, and quality stability is poor.Along with the development of prefabricated component, prefabricated units are produced in batches in factory, maintenance complete after, be transported to job site can directly use, compared with traditional cast-in-place, advantage is: for construction worker, and in factory, the site operation safety factor of metastable working environment more complicated is higher; The quality of building unit and technique can be controlled better by mechanization production; The standardization of preform sizes and characteristic can significantly be accelerated to install and construction work progress; Compared with conventional on-site molding, the mould in factory can repetitive cycling use, and integrated cost is lower; Mechanization production is less to work Man's Demands, and along with the continuous rising of cost of labor, the prefabricated component cost advantage of large-scale production can be further obvious; Adopt the building site field operation amount of prefabricated component obviously to reduce, dust pollution, noise pollution significantly reduce.In the factorial praluction of prefabricated prefabricated units, owing to being subject to mould specification and haulage vehicle to the restriction of component length, prefabricated units are the longest can only accomplish 17 meters, for Extra-Deep Foundation Pit, more piece stake is just needed to connect, existing technology is the overlapping mode adopting welding, the drawback of this overlapping mode is: because quality management and control is weaker in work progress, workman has welded direct pile sinking, under lap-joint is in high-temperature condition, quick cooling, causes bridging arrangement very easily to become fragile, and pile body anti-bending strength weakens.In addition, prefabricated units are in the work progress implanting agitation pile, and because pile body sectional area is comparatively large, suffered resistance is also larger, the conventional process for sinking of current use has vibration, static pressure two kinds of patterns: needed for conventional vibration technique, constructing operation face is less, but has certain vibration effect to environment; Conventional static pressure equipment sinks work progress friction, but piling position is positioned in the middle part of pile compacting equipment, and namely pile compacting equipment edge is apart from construction part >=4m, in order to meet prefabricated units construction, need research and develop targetedly and manufacturing skirt piles static pressure equipment.Skirt piles static pressure equipment, pile body construction is positioned at equipment top, and constructing operation identity distance construction part >=500mm, this kind of equipment solves the difficult problem of this construction technology preferably.Adopt the technique of digging slip casting back cover construction technology (i.e. CLP engineering method) equipment pile sinking in high-frequency electric or hydraulic vibration or concrete tubular pile core bore, solve the vibration of conventional vibration equipment on environment and involve soil compaction and affect problem.Prefabricated units in the utility model mainly refer to prefabricated reinforced concrete H type component and prefabricated offcenter squared pile, wherein prefabricated reinforced concrete H type component is implanted as the technique adopting skirt piles static pressure equipment or high-frequency electric/hydraulic vibration equipment pile sinking during retaining design structure in agitation pile, and prefabricated offcenter squared pile then to adopt in skirt piles static pressure machinery or concrete tubular pile core bore digging slip casting back cover technology (i.e. CLP engineering method) pile sinking as the construction technology of retaining design.
Utility model content
The purpose of this utility model be exactly in order to overcome that above-mentioned prior art Problems existing provides a kind of without the need to welding, reduce light pollution, improve pile extension speed, prefabricated reinforced concrete component that steadiness better adopts non-melting welding more piece to connect is for resisting retaining design and the construction method thereof of soil body lateral force.
The utility model content can realize by following technical solution:
The prefabricated reinforced concrete component that a kind of non-melting welding more piece connects, described prefabricated reinforced concrete component includes but not limited to prefabricated reinforced concrete H type component and prefabricated offcenter squared pile, the prefabricated reinforced concrete component that described non-melting welding more piece connects is made up of L-type pre-embedded steel slab, constructional reinforcement and cover plate, in stake and stake lap-joint, cover plate is fitted in L-type pre-embedded steel slab side during construction, and is tightened by bolts.
Described prefabricated reinforced concrete component adopts 2 pieces of L-type pre-embedded steel slabs in its joint, engagement formation arrangement of reinforcement and 2 pieces of cover plates form again simultaneously.
Described constructional reinforcement comprises indented bars and prestressed steel bar, be anchored on L-type pre-embedded steel slab with pier nose form, they are cast in concrete and form prefabricated reinforced concrete component, described L-type pre-embedded steel slab, adopt the lozenges designed with 30 ° ~ 50 °, deck design is with 30 ° ~ 50 ° Baltimore grooves, and described cover plate, adopts in more piece stake junction bolt to be connected with cover plate by L-type pre-embedded steel slab and compress.
Described prefabricated reinforced concrete component refers to prefabricated reinforced concrete H type component and prefabricated offcenter squared pile.
Described prefabricated offcenter squared pile reserves groove in stake side, and stake is connected with stake and recycles cement mortar and carry out longitudinal sealing.
Compared with prior art, the utility model has following beneficial effect:
1. the utility model adds prestressed steel bar, to be anchored on L-type pre-embedded steel slab and to cast in prefabricated PC steel bar concrete H type component, effectively strengthening L-type pre-embedded steel slab, can ensure that L-type pre-embedded steel slab does not produce distortion in longitudinal stress like this.
2. in the utility model, L-type pre-embedded steel slab increases the lozenges with 30 ° ~ 50 °, cover plate increases with 30 ° ~ 50 ° Baltimore grooves, make L-type pre-embedded steel slab be connected with cover plate like this to compress, transmitted by tongue and groove time stressed, reduce the shear resistance of bolt, improve resistance to tension thus play the connection function of more piece stake.
3. eliminate existing welding manner in the utility model, then be connected with cover plate with L-type pre-embedded steel slab with bolt, effectively improve pile extension speed, reduce light pollution, reduce the shear resistance of bolt, improve resistance to tension.
4. traditional vibration, static pressure pile-sinking equipment in the utility model, have been abandoned, adopt skirt piles static pressure equipment, pile body construction is positioned at equipment top, constructing operation identity distance construction part >=500mm, thoroughly solving traditional vibratory equipment piling position is positioned in the middle part of pile compacting equipment, and namely pile compacting equipment edge is apart from a difficult problem of construction part >=4m.Adopt the technique of digging slip casting back cover construction technology (i.e. CLP engineering method) equipment pile sinking in high-frequency electric or hydraulic vibration or concrete tubular pile core bore in the utility model, solve the vibration of conventional vibration equipment on environment and involve soil compaction and affect problem.
Accompanying drawing explanation
Accompanying drawing 1-4 is prefabricated reinforced concrete H type component non-melting welding multiple section conncection structure schematic diagrames in the utility model
Accompanying drawing 5-8 is prefabricated offcenter squared pile non-melting welding multiple section conncection structure schematic diagrames in the utility model
Accompanying drawing 9 is prefabricated reinforced concrete component non-melting welding multiple section conncection structure schematic diagrames in the utility model
Accompanying drawing 10 is that in the utility model, prefabricated reinforced concrete H type component adopts skirt piles machinery static pressure piling construction operation process chart
Accompanying drawing 11-14 is prefabricated reinforced concrete H type component skirt piles machinery static pressure piling construction operation schematic diagram in the utility model
Accompanying drawing 15 is prefabricated reinforced concrete H type component high-frequency electric or hydraulic vibration piling construction operation process charts in the utility model
Accompanying drawing 16-19 is prefabricated reinforced concrete H type component high-frequency electric or hydraulic vibration piling construction operation schematic diagram in the utility model
Accompanying drawing 20 is that schematic diagram in agitation pile implanted by prefabricated reinforced concrete H type component in the utility model
Accompanying drawing 21-1 ~ accompanying drawing 21-3 is in the utility model in prefabricated reinforced concrete H type component two kinds of pile sinking engineering method processes, more piece stake overlap joint operation chart
Accompanying drawing 22 is that in the utility model, prefabricated offcenter squared pile adopts skirt piles machinery static pressure piling construction operation process chart
Accompanying drawing 23 is that the prefabricated offcenter squared pile of the utility model adopts CLP engineering method machinery static pressure piling construction operation process chart
Accompanying drawing 24-27 be in the utility model prefabricated offcenter squared pile adopt in skirt piles machinery static pressure piling construction operation schematic diagram
Accompanying drawing 28-31 is that in the utility model, prefabricated offcenter squared pile adopts CLP engineering method machinery static pressure piling construction operation schematic diagram
Accompanying drawing 32 be in the utility model prefabricated offcenter squared pile as water-stop curtain sectional drawing
Accompanying drawing 33-1 ~ accompanying drawing 33-3 is prefabricated offcenter squared pile overlap joint schematic diagram in the utility model
In figure, 1 be L-type pre-embedded steel slab, 2 are cover plates, 3 are bolts, 4 are indented barss, 5 are prestressed steel bars, 6 are L-type pre-embedded steel slabs are three axles (five axles) agitation piles, 8 with inclined-plane, 7 between cover plate is prefabricated PC steel bar concrete H type components that non-melting welding more piece is connected
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.The present embodiment is implemented premised on technical solutions of the utility model, give detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Embodiment:
As Figure 1-Figure 8, a kind of prefabricated reinforced concrete component adopting non-melting welding more piece to connect, comprises L-type pre-embedded steel slab 1, cover plate 2, bolt 3, indented bars 4, prestressed steel bar 5, between L-type pre-embedded steel slab 1 and cover plate 2, inclined-plane 7 forms.Described L-type pre-embedded steel slab 1, indented bars 4 and prestressed steel bar 5 are fixed on prefabricated PC steel bar concrete H type component, inclined-plane between described L-type pre-embedded steel slab 1 and cover plate 2, the lozenges with 30 ° ~ 50 ° is increased by L-type pre-embedded steel slab 1, cover plate 2 increases with 30 ° ~ 50 ° Baltimore grooves connection compression compositions, transmitted by tongue and groove time stressed, reduce the shear resistance of bolt, improve resistance to tension.
The prefabricated reinforced concrete component adopting non-melting welding more piece to connect, for resisting retaining design and the construction method thereof of soil body lateral force, adopts following four kinds of modes for prefabricated reinforced concrete H type component retaining design:
Mode one: adopt skirt piles static pressure machinery to sink to five axle mixing pile construction methods and comprise the following steps as Figure 10:
(1) full pattern is released according to working drawing, open channels;
(2) Soil-cement pile water stopping curtain construction;
(3) skirt piles static pressure machinery equipment moving is to position to be onstructed, lifting first segment prefabricated reinforced concrete H type component 8 is as Figure 11, in five axle agitation piles 7, before cement grout initial set, utilize skirt piles static pressure equipment to be pressed in five axle agitation piles first segment prefabricated units as Figure 12, a component top mark high position 0.5 ~ 1.5m scope more than ground, the connection for component provides enough construction spaces;
(4) lift by crane second section prefabricated units as Figure 13, utilize the exact connect ion of alignment pin determination first segment, second section component;
(5) pneumatic impact spanner is utilized bolt 3, cover plate 2 to be effectively connected with upper and lower L-type pre-embedded steel slab 1;
(6) start skirt piles static pressure machinery equipment, second section prefabricated units are sunk to and specifies absolute altitude as Figure 14;
(7) one groups are terminated, and move to second group and continue construction, until complete whole retaining design
Mode two: employing skirt piles machinery static pressure sinks to the construction method in three axes agitating pile, and Specific construction flow process is as follows:
(1) full pattern is released according to working drawing, open channels,
(2) Soil-cement pile water stopping curtain construction;
(3) as Figure 11-Figure 14, skirt piles static pressure machinery equipment moving is to position to be onstructed, pile body construction is positioned at equipment top, pile compacting equipment constructing operation identity distance construction part >=500mm, lifting first segment prefabricated units 8, in three axes agitating pile 7, utilize skirt piles static pressure press-fit equipment to be pressed into as Figure 12 in three axes agitating pile by first segment prefabricated units 8 before cement grout initial set, a component top mark high position 0.5 ~ 1.5m scope more than ground, the connection for component provides enough construction spaces;
(4) as Figure 13, lifting second section prefabricated units, utilize the exact connect ion of alignment pin determination first segment, second section component; Accompanying drawing 1-4 is prefabricated reinforced concrete H type component non-melting welding multiple section conncection structure schematic diagram.
(5) bolt hole of cover plate 2 is aimed at the bolt hole of upper and lower L-type pre-embedded steel slab 1, and fit, with pneumatic impact spanner, bolt 3, cover plate 2 are carried out effectively being connected as Figure 21-1 ~ Figure 21-3 with upper and lower L-type pre-embedded steel slab 1;
(6) start skirt piles static pressure machinery equipment, second section prefabricated units 8 are sunk to appointment absolute altitude;
(7) one groups are terminated, and move to second group and continue construction, until complete whole retaining design.
Mode three: adopt high-frequency electric or hydraulic vibration equipment to sink to the construction of five axle agitation piles, Specific construction flow process is as follows in Figure 15:
(1) full pattern is released according to working drawing, open channels,
(2) Soil-cement pile water stopping curtain construction;
(3) as Figure 16, lifting first segment prefabricated units, adopt high-frequency electric or hydraulic vibration equipment, before five axle agitation pile 7 cement grout initial sets, first segment prefabricated units 8 are sunk in agitation pile as Figure 17, a component top mark high position 0.5 ~ 1.5m scope more than ground, the connection for component provides enough construction spaces;
(4) as Figure 18, lifting second section prefabricated units, utilize the exact connect ion of alignment pin determination first segment, second section component;
(5) bolt hole of cover plate 2 is aimed at the bolt hole of upper and lower L-type pre-embedded steel slab 1, and fit, with pneumatic impact spanner, bolt 3, cover plate 2 are carried out effectively being connected as Figure 21-1 ~ Figure 21-3 with upper and lower L-type pre-embedded steel slab 1;
(6) as Figure 19, utilize high-frequency electric or hydraulic vibration equipment that second section prefabricated units 8 are sunk to appointment absolute altitude;
(7) one groups are terminated, and move to second group and continue construction, until complete whole retaining design.
Mode four: adopt high-frequency electric or hydraulic vibration equipment to sink to the construction of three axes agitating pile, Specific construction flow process is as follows:
(1) full pattern is released according to working drawing, open channels,
(2) Soil-cement pile water stopping curtain construction;
(3) as Figure 16, lifting first segment prefabricated units, adopt high-frequency electric or hydraulic vibration equipment, before five axle agitation pile 7 cement grout initial sets, first segment prefabricated units 8 are sunk in agitation pile as Figure 17, a component top mark high position 0.5 ~ 1.5m scope more than ground, the connection for component provides enough construction spaces;
(4) as Figure 18, lifting second section prefabricated units, utilize the exact connect ion of alignment pin determination first segment, second section component;
(5) bolt hole of cover plate 2 is aimed at the bolt hole of upper and lower L-type pre-embedded steel slab 1, and fit, with pneumatic impact spanner, bolt 3, cover plate 2 are carried out effectively being connected as Figure 21-1 ~ Figure 21-3 with upper and lower L-type pre-embedded steel slab 1;
(6) as Figure 19, utilize high-frequency electric or hydraulic vibration equipment that second section prefabricated units 8 are sunk to appointment absolute altitude;
(7) one groups are terminated, and move to second group and continue construction, until complete whole retaining design.
The prefabricated reinforced concrete component adopting non-melting welding more piece to connect, for resisting retaining design and the construction method thereof of soil body lateral force, adopts following two kinds of modes for prefabricated offcenter squared pile retaining design:
Mode one: adopt skirt piles static pressure machinery construction method to comprise the following steps as Figure 22:
(1) full pattern is released according to working drawing, open channels;
(2) skirt piles static pressure machinery equipment moving to position to be onstructed as Figure 24, the prefabricated centrifugal rectangle pile element of lifting first segment utilizes skirt piles static pressure equipment by prefabricated for the first segment offcenter squared pile press-in soil body as Figure 25, a component top mark high position 0.5 ~ 1.5m scope more than ground, the connection for component provides enough construction spaces;
(3) lift by crane the prefabricated offcenter squared pile of second section, utilize the exact connect ion of alignment pin determination first segment, second section component as Figure 26;
(4) pneumatic impact spanner is utilized high-strength bolt 3, cover plate 2 to be carried out effectively being connected as Figure 33-1 ~ Figure 33-3 with upper and lower L-type pre-embedded steel slab 1;
(5) start skirt piles static pressure machinery equipment as Figure 27, prefabricated for second section offcenter squared pile is sunk to appointment absolute altitude;
(6) one groups are terminated, and move to second group and continue construction.
(7) utilize giant to carry out clearly behind hole to groove between stake stake, recycling cement mortar carries out sealing.Repeat above work, until complete whole retaining design.
Mode two: adopt digging slip casting back cover construction technology (i.e. CLP engineering method) plant equipment construction method in concrete tubular pile core bore to comprise the following steps as Figure 23:
(1) full pattern is released according to working drawing, open channels;
(2) CLP plant equipment moves to position to be onstructed as Figure 28, the prefabricated offcenter squared pile of construction first segment utilizes CLP plant equipment to be pressed in the soil body prefabricated for first segment offcenter squared pile as Figure 29, a component top mark high position 0.5 ~ 1.5m scope more than ground, the connection for component provides enough construction spaces;
(3) lift by crane the prefabricated offcenter squared pile of second section as Figure 30, utilize the exact connect ion of alignment pin determination first segment, second section component;
(4) pneumatic impact spanner is utilized high-strength bolt 3, cover plate 2 to be carried out effectively being connected as Figure 33-1 ~ Figure 33-3 with upper and lower L-type pre-embedded steel slab 1;
(5) start CLP plant equipment, prefabricated for second section offcenter squared pile is sunk to and specifies absolute altitude as Figure 31;
(6) one groups are terminated, and move to second group and continue construction.
(7) utilize giant to carry out clearly behind hole to groove between stake stake, recycling cement mortar carries out sealing.Repeat above work, until complete whole retaining design.
Claims (5)
1. the prefabricated reinforced concrete component of a non-melting welding more piece connection, described prefabricated reinforced concrete component includes but not limited to prefabricated reinforced concrete H type component and prefabricated offcenter squared pile, the prefabricated reinforced concrete component that described non-melting welding more piece connects is made up of L-type pre-embedded steel slab, constructional reinforcement and cover plate, in stake and stake lap-joint, cover plate is fitted in L-type pre-embedded steel slab side during construction, and is tightened by bolts.
2. the prefabricated reinforced concrete component of non-melting welding more piece connection according to claim 1, is characterized in that, described prefabricated reinforced concrete component adopts 2 pieces of L-type pre-embedded steel slabs in its joint, engagement formation arrangement of reinforcement and 2 pieces of cover plates form again simultaneously.
3. the prefabricated reinforced concrete component of non-melting welding more piece connection according to claim 1, it is characterized in that, described constructional reinforcement comprises indented bars and prestressed steel bar, be anchored on L-type pre-embedded steel slab with pier nose form, they are cast in concrete and form prefabricated reinforced concrete component, described L-type pre-embedded steel slab, adopt the lozenges designed with 30 ° ~ 50 °, deck design is with 30 ° ~ 50 ° Baltimore grooves, described cover plate, adopts in more piece stake junction bolt to be connected with cover plate by L-type pre-embedded steel slab and compresses.
4. the prefabricated reinforced concrete component of non-melting welding more piece connection according to claim 1, it is characterized in that, described prefabricated reinforced concrete component refers to prefabricated reinforced concrete H type component and prefabricated offcenter squared pile.
5. the prefabricated reinforced concrete component that connects of non-melting welding more piece according to claim 1, it is characterized in that, described prefabricated offcenter squared pile reserves groove in stake side, and stake is connected with stake and recycles cement mortar and carry out longitudinal sealing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520087289.5U CN205012345U (en) | 2015-02-06 | 2015-02-06 | Precast reinforced concrete component that non - melting welding multisection is connected |
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| CN201520087289.5U CN205012345U (en) | 2015-02-06 | 2015-02-06 | Precast reinforced concrete component that non - melting welding multisection is connected |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575962A (en) * | 2020-12-15 | 2021-03-30 | 聂运发 | Prefabricated reinforced concrete structural beam for prefabricated house building |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575962A (en) * | 2020-12-15 | 2021-03-30 | 聂运发 | Prefabricated reinforced concrete structural beam for prefabricated house building |
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Effective date of registration: 20240103 Address after: Room J815, 3rd Floor, No. 5358 Huyi Road, Jiading District, Shanghai, June 2018 Patentee after: Zhongji Engineering (Shanghai) Geotechnical Co.,Ltd. Address before: 502-1, area B, No.1, Lane 518, Hengyong Road, Jiading District, Shanghai, 201806 Patentee before: SHANGHAI CHENGDI CONSTRUCTION Co.,Ltd. Patentee before: SHANGHAI CHENGDI ROCK-SOIL DESIGN Co.,Ltd. |
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Effective date of registration: 20240219 Address after: 201306 floor 2, No. 979, Yunhan Road, Lingang xinpian District, Pudong New Area, Shanghai Patentee after: Shanghai Teyu Technology Co.,Ltd. Country or region after: China Address before: Room J815, 3rd Floor, No. 5358 Huyi Road, Jiading District, Shanghai, June 2018 Patentee before: Zhongji Engineering (Shanghai) Geotechnical Co.,Ltd. Country or region before: China |