CN208733869U - Precast shear wall wall vertical connection structure - Google Patents
Precast shear wall wall vertical connection structure Download PDFInfo
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- CN208733869U CN208733869U CN201821399359.0U CN201821399359U CN208733869U CN 208733869 U CN208733869 U CN 208733869U CN 201821399359 U CN201821399359 U CN 201821399359U CN 208733869 U CN208733869 U CN 208733869U
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- 238000005266 casting Methods 0.000 claims abstract description 118
- 239000004567 concrete Substances 0.000 claims abstract description 60
- 238000011065 in-situ storage Methods 0.000 claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000003032 molecular docking Methods 0.000 claims abstract description 33
- 238000005452 bending Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 8
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000011374 ultra-high-performance concrete Substances 0.000 description 3
- 241001669679 Eleotris Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model discloses precast shear wall wall vertical connection structure, including Cast-in-situ Beam and shear wall wall, there is Cast-in-situ Beam beam to dock end, and there is shear wall wall wall to dock end；Pouring basin with upper end opening in the beam docking end of Cast-in-situ Beam, the first casting channel above pouring basin is provided in shear wall wall, end is docked through wall in the first casting channel, it is connected to pouring basin, first casting channel is formed with casting entrance on shear wall, end docking is docked with the beam of Cast-in-situ Beam in the wall docking end of shear wall wall, the concrete being poured from casting entrance flows into pouring basin along the first casting channel, until by being filled up in the first casting channel and pouring basin, after concrete setting, shear wall wall is fixed with Cast-in-situ Beam, construction is simple；Also, being welded and fixed for the butting steel plate of end setting is docked with beam by the angle steel of wall docking end setting, fixes shear wall wall with Cast-in-situ Beam more stable.
Description
Technical field
The utility model relates to the technical fields of shear wall, especially precast shear wall wall vertical connection structure.
Background technique
Shear wall is also known as wind-resistant wall, seismic structural wall, earthquake resistant wall or structural wall, is that wind load or earthquake are primarily subjected in house or structures
The wall of horizontal loading and vertical load (gravity) caused by acting on prevents structure shear (being cut) from destroying, generally mixed with reinforcing bar
Solidifying soil is made into.
Currently, government is higher and higher to the prefabricated rate requirement of assembled architecture, even, certain areas require prefabricated rate to reach
50%.Assembled high-layer shear force wall occupies great component in assembled architecture, and precast shear wall just becomes necessary,
In the prior art, precast shear wall wall vertical connection structure is mainly sleeve grouting connection, sleeve grouting connection
Have the following deficiencies: 1), connector it is excessive, constructing operation is cumbersome；2), grouting leakiness, and can not detect；3), reinforcing bar positions not
Standard, scene perforation difficulty are big；4), more demanding to the sense of responsibility of construction personnel.The above problem can all cause quality to ask
Topic, final buried security risk, causes precast shear wall wall vertically to connect built on the sand.
Utility model content
The purpose of this utility model is to provide precast shear wall wall vertical connection structures, it is intended to solve the prior art
In, the problem of the vertical connection construction complexity of precast shear wall wall.
The utility model is realized in this way precast shear wall wall vertical connection structure, including Cast-in-situ Beam and shearing
There is beam to dock end for wall wall, the Cast-in-situ Beam, and the shear wall wall has the wall butt end connecting with cast-in-place beam end
Portion；There is the pouring basin of upper end opening in the beam docking end of the Cast-in-situ Beam, be provided in the shear wall wall positioned at institute
The first casting channel above pouring basin is stated, the first casting channel docks end through the wall, is connected to the casting
Slot, first casting channel are formed with casting entrance on shear wall, lead in the first casting channel and the pouring basin
The casting entrance fill concrete is crossed, the shear wall wall is connected as one with Cast-in-situ Beam；The beam pair of the Cast-in-situ Beam
Connect end and be provided with butting steel plate, the wall docking end of the shear wall wall is fixedly installed angle steel, the angle steel with it is described
Butting steel plate welding.
Further, first casting channel includes the first straight line section and the first arc segment being vertically arranged, described
The side of the shear wall wall is run through in one end of first arc segment, forms the casting entrance, first arc segment it is another
One end is vertically arranged downward；End is docked through the wall in the bottom of the first straight line section, is connected to the pouring basin, and described the
It is docked with the other end of first arc segment at the top of one straightway.
Further, along the casting entrance to the direction of pouring basin, the diameter in first casting channel is gradually increased.
Further, the second casting channel above the pouring basin is provided in the shear wall wall, it is described
End is docked through the wall in second casting channel, is connected to the pouring basin, second casting channel is in the shear wall wall
It is formed with casting outlet with it, second casting channel passes through the casting entrance fill concrete.
Further, second casting channel includes the second straight line section and the second arc segment being vertically arranged, described
The side of the shear wall wall is run through in one end of second arc segment, forms the casting and exports, second arc segment it is another
One end is vertically arranged downward；End is docked through the wall in the bottom of the second straight line section, is connected to the pouring basin, and described the
It is docked with the other end of second arc segment at the top of two straightways.
Further, the direction of pouring basin, the reduced diameter in second casting channel are exported to along the casting.
Further, the first casting channel is arranged in the both ends of the pouring basin with the second casting channel, in opposite
Arrangement.
Further, the casting entrance and casting outlet respectively correspond two opposition for being formed in the shear wall wall
Side, in positioned opposite.
Further, the angle steel has outer bending part, along the direction for deviating from the shear wall wall, the outer bending part
Extending outwardly has extension, and the extension and the butting steel plate are welded.
Further, the beam docking end of the Cast-in-situ Beam has the notch to lower recess, and the butting steel plate is placed in institute
It states in notch, and the butting steel plate docks end flush arrangement with the beam.
Compared with prior art, it is provided by the utility model by shear wall wall dock Cast-in-situ Beam on when, shear wall wall
Wall docking end dock with the beam of Cast-in-situ Beam end docking, shear wall wall first be poured channel and Cast-in-situ Beam pouring basin
Connection, then, the concrete being poured from casting entrance flow into pouring basin along the first casting channel, until the first casting is logical
It is filled up in road and pouring basin, after concrete setting, forms a keyway, shear wall wall is fixed with Cast-in-situ Beam, it is fixed stably
It is fixed, it is not easy to collapse, while construction is simple is convenient；Also, butting steel plate is set in the beam of Cast-in-situ Beam docking end, in shear wall wall
Angle steel is arranged in the wall docking end of body, by being welded and fixed for angle steel and butting steel plate, further make shear wall wall with it is cast-in-place
Beam is fixed more stable, while being convenient for accurate positioning；It solves in the prior art, the vertical connection construction of precast shear wall wall
Complicated problem.
Detailed description of the invention
Fig. 1 is the overall structure diagram of precast shear wall wall vertical connection structure provided by the utility model；
Fig. 2 is the cross section structure schematic diagram of precast shear wall wall vertical connection structure provided by the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The realization of the utility model is described in detail below in conjunction with specific embodiment.
The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment；In retouching for the utility model
In stating, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion institute
The device or element of finger must have a particular orientation, be constructed and operated in a specific orientation, therefore position pass is described in attached drawing
The term of system only for illustration, should not be understood as the limitation to this patent, for those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term as the case may be.
It is preferred embodiment provided by the utility model shown in referring to Figures 1 and 2.
The precast shear wall wall vertical connection structure that the utility model provides, it is cast-in-place shear wall wall 11 to be fixed to
When on beam 12, pouring basin is set by the first casting channel 111 being arranged from shear wall wall 11 and on Cast-in-situ Beam 12
121, make Concrete Filled in the first casting channel 111 and pouring basin 121, concrete setting becomes one, makes to cut
Power wall wall 11 is stably fixed on Cast-in-situ Beam 12, construction is simple.
Precast shear wall wall vertical connection structure provided in this embodiment, including Cast-in-situ Beam 12 and shear wall wall
11, there is Cast-in-situ Beam 12 beam to dock end, and shear wall wall 11 has the wall docking end connecting with 12 end of Cast-in-situ Beam；It is cast-in-place
There is the pouring basin 121 of upper end opening in the beam docking end of beam 12, be provided on pouring basin 121 in shear wall wall 11
End is docked through wall in first casting channel 111 of side, the first casting channel 111, is connected to pouring basin 121, and the first casting is logical
Road 111 is formed with casting entrance 1111 on shear wall, passes through casting entrance in the first casting channel 111 and pouring basin 121
Shear wall wall 11 and Cast-in-situ Beam 12 are connected as one by 1111 fill concretes；The beam docking end of Cast-in-situ Beam 12 is provided with
122 plate of steel is docked, the wall docking end of shear wall wall 11 is fixedly installed angle steel 113, and angle steel 113 is welded with 122 plate of steel is docked
It connects.
In this way, by shear wall wall 11 dock Cast-in-situ Beam 12 on when, shear wall wall 11 wall docking end with it is cast-in-place
First casting channel 111 of the beam docking end docking of beam 12, shear wall wall 11 is connected to the pouring basin 121 of Cast-in-situ Beam 12,
Then, the concrete being poured from casting entrance 1111 flows into pouring basin 121 along the first casting channel 111, until by first
Casting channel 111 and pouring basin 121 in fill up, after concrete setting, form a keyway, by shear wall wall 11 with it is cast-in-place
Beam 12 is fixed, and fixing-stable is not easy to collapse, while construction is simple is convenient；Also, in the beam of Cast-in-situ Beam 12 docking end setting pair
122 plate of steel is connect, angle steel 113 is set in the wall docking end of shear wall wall 11, passes through angle steel 113 and the weldering for docking 122 plate of steel
Fixation is connect, fixes shear wall wall 11 with Cast-in-situ Beam 12 more stable, while being convenient for accurate positioning.
In the present embodiment, the concrete being poured is the superpower concrete of UHPC, and the superpower concrete of UHPC has the resistance to of superelevation
The mechanical property of long property and superelevation, strengthens the fixation between shear wall wall 11 and Cast-in-situ Beam 12.
In addition, the side walls collapse in pouring basin 121 is formed with casting notch, Concrete Filled is poured notch, so that shearing
Wall wall 11 and Cast-in-situ Beam 12, which are stablized, to be fixed.
In addition, the first casting channel 111 includes the first straight line section 1113 and the first arc segment 1112 being vertically arranged, the
One end of one arc segment 1112 run through shear wall wall 11 side, formed casting entrance 1111, the first arc segment 1112 it is another
One end is vertically arranged downward；End is docked through wall in the bottom of first straight line section 1113, is connected to pouring basin 121, first straight line section
1113 top is docked with the other end of the first arc segment 1112, i.e., when being poured concrete, concrete gradually fills pouring basin
121 and the first casting channel 111, the first arc segment 1112 of setting can be poured to avoid concrete too fast and overflow first and pour
Channel 111 is infused, and first straight line section 1113 gos deep into concrete in shear wall wall 11, the concrete after solidification makes shear wall
Wall 11 is more stable with the fixation of Cast-in-situ Beam 12, also, gos deep into concrete in the concrete of the first arc segment 1112 solidification
Shear wall wall 11 has bending part, avoids directly lifting shear wall wall 11 from Cast-in-situ Beam 12, further makes the two solid
Fixed is more stable, and 1112 collective effect of such first straight line section 1113 and the first arc segment engages shear wall wall 11,
Stablize and fixes.
In other embodiments, the first casting inclined arrangement in channel 111, i.e., by the first casting of concrete injection channel
When 111, the concrete solidified in the first casting channel 111 can prevent simultaneously shear wall wall 11 from lifting displacement.
In addition, the inner sidewall in the first casting channel 111 is formed with recessed groove, in this way, Concrete Filled recessed groove, makes to solidify
Concrete afterwards lives 11 inlay card of shear wall wall, with more stable.
Also, along casting entrance 1111 to the direction of pouring basin 121, the diameter in the first casting channel 111 is gradually increased, this
Sample, the keyway volume formed after concrete setting is bigger, fixes shear wall wall 11 with Cast-in-situ Beam 12 more stable, and
Concrete is not easy to overflow.
Likewise, the second casting channel being provided with above pouring basin 121 in shear wall wall 11, the second casting are logical
Road docks end through wall, is connected to pouring basin 121, and the second casting channel is formed with casting outlet in shear wall wall 11
1121, the second casting channel is by casting 1111 fill concrete of entrance, i.e., by casting 1111 fill concrete of entrance, from pouring
The outflow of mouth 1121 is outpoured, so that concrete is simultaneously filled with the first casting channel 111 and the second casting channel, in this way, making concrete
It can be poured channel and pouring basin 121 full of the first casting channel 111, second, keep the concrete of filling more closely knit, after solidification
Concrete it is more stable, easy to operate, quick construction, Concrete Filled is sufficient.
Specifically, when being poured concrete, from casting 1111 penetration concrete of entrance, until 1121 outflow of casting outlet is mixed
Until solidifying soil, stopping casting concrete, casting and constructing is simple, convenient for judgement, and after being poured 1121 outflow concrete of outlet, casting
Slot 121, first, which is poured channel 111 and the second casting channel, must fill up concrete, ensure that concrete tamps.
In this way, the second casting channel includes the second straight line section 1123 being vertically arranged and the second arc segment 1122, second
One end of arc segment 1122 run through shear wall wall 11 side, formed casting outlet 1121, the second arc segment 1122 it is another
End is vertically arranged downward；End is docked through wall in the bottom of second straight line section 1123, is connected to pouring basin 121, second straight line section
1123 top is docked with the other end of the second arc segment 1122, i.e., when being poured concrete, concrete gradually fills pouring basin
121 and the second casting channel, second straight line section 1123 gos deep into concrete in shear wall wall 11, and the concrete after solidification makes
Shear wall wall 11 is more stable with the fixation of Cast-in-situ Beam 12, also, makes coagulation in the concrete of the second arc segment 1122 solidification
Soil gos deep into shear wall wall 11 with bending part, avoids directly lifting shear wall wall 11 from Cast-in-situ Beam 12, further make
Fixed more stable, 1122 collective effect of such second straight line section 1123 and the second arc segment, by shear wall wall 11 of the two
Engage, stablizes and fix.
In other embodiments, the second casting inclined arrangement in channel, i.e., when concrete injection second being poured channel, the
The concrete solidified in two casting channels can prevent simultaneously shear wall wall 11 from lifting displacement.
In addition, being formed with guide groove on the inner wall in the second casting channel, guide groove is exported along pouring basin 121 toward casting
1121 direction is disposed to extend, in this way, Concrete Filled guide groove, makes the concrete after solidifying by 11 inlay card of shear wall wall
Firmly, with more stable, meanwhile, the guide groove of setting is convenient for concrete flowing, to fill up casting channel.
Also, it is poured the reduced diameter in channel along casting outlet 1121 to the direction of pouring basin 121, second, in this way,
The keyway volume formed after concrete setting is bigger, fixes shear wall wall 11 with Cast-in-situ Beam 12 more stable.
In the present embodiment, the first casting channel 111 and second is poured the both ends that channel is arranged in pouring basin 121, in opposite
Arrangement with beam docks end and is provided with two concrete and coagulate that is, in the same position in the wall docking end of shear wall wall 11
Solid keyway, further stablize shear wall wall 11 and Cast-in-situ Beam 12.
Specifically, above-mentioned casting entrance 1111 is respectively corresponded with casting outlet 1121 is formed in two of shear wall wall 11
Oppose side, is in positioned opposite, in this way, it is consistent with the height that casting exports 1121 to be poured entrance 1111, ensure that concrete energy
Stablize while the first casting channel 111 of filling and second is poured channel.
In the present embodiment, first is poured channel 111 and the second casting channel along the extending direction cloth of shear wall wall 11
Be equipped with it is multiple, specifically, the first casting channel 111 of every 600mm setting and second being poured along the extending direction of wall docking end
Channel is infused, first first casting channel 111 and second are poured channel and are not less than 500mm away from wall edge, in this way, uniform cloth
The multiple first casting channels 111 and the second casting channel set, dock shear wall wall 11 with Cast-in-situ Beam 12 more anxious firm.
In addition, angle steel 113 has outer bending part, along the direction for deviating from shear wall wall 11, outer bending part extends outwardly and has
Extension, extension are welded with 122 plate of steel is docked, and increase the bonding area of extension and steel plate, stablize the two welding.
Also, the beam docking end of Cast-in-situ Beam 12 has the notch to lower recess, and docking 122 plate of steel is placed in notch, and
Docking 122 plate of steel docks end flush arrangement with beam, so that the wall of shear wall wall 11 is docked end face and docks the stable patch in end face with beam
It closes, fixing-stable.
In the present embodiment, angle steel 113 be disposed with along the extending direction of shear wall wall 11 it is multiple, specifically, along wall dock
Every 600mm is arranged an angle steel 113 on the extending direction of end, and first angle steel 113 be away from wall edge 400mm, in this way,
Multiple angle steel 113 of even arrangement are welded and fixed with the steel 122 that docks on Cast-in-situ Beam 12, keep shear wall wall 11 and Cast-in-situ Beam 12 right
It connects more anxious firm.
During the implementation method of the present embodiment, 1) pouring basin 121 is reserved on Cast-in-situ Beam 12, and clean out；2)
Shear wall wall 11 is lifted, wall docking end face is docked with beam butt end face, makes the first casting channel 111 and the second casting channel
Accurately it is connected to the contraposition of pouring basin 121；3) sleeper reinforcing bar, ring beam reinforcing steel bar are installed；4) angle steel 113 is welded admittedly with steel 122 is docked
It is fixed, weld width 6mm；5) the superpower concrete of UHPC is injected from casting entrance 1111, until 1121 outflow concrete of casting outlet
Slurries；6) it is poured sleeper armored concrete；7) shear wall wall 11 installs.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. precast shear wall wall vertical connection structure, which is characterized in that described cast-in-place including Cast-in-situ Beam and shear wall wall
There is beam beam to dock end, and the shear wall wall has the wall docking end connecting with cast-in-place beam end；The Cast-in-situ Beam
Beam docks the pouring basin in end with upper end opening, the be provided in the shear wall wall above the pouring basin
End is docked through the wall in one casting channel, the first casting channel, is connected to the pouring basin, and first casting is logical
Road is formed with casting entrance on shear wall, is filled in the first casting channel and the pouring basin by the casting entrance
The shear wall wall is connected as one by concrete with Cast-in-situ Beam；The beam docking end of the Cast-in-situ Beam is provided with docking steel
The wall docking end of plate, the shear wall wall is fixedly installed angle steel, and the angle steel and the butting steel plate are welded.
2. precast shear wall wall vertical connection structure as described in claim 1, which is characterized in that first casting channel
Including the first straight line section and the first arc segment being vertically arranged, the shear wall wall is run through in one end of first arc segment
Side, form the casting entrance, the other end of first arc segment is vertically arranged downward；The bottom of the first straight line section
End is docked through the wall in portion, is connected to the pouring basin, the top of the first straight line section is another with first arc segment
One end docking.
3. precast shear wall wall vertical connection structure as claimed in claim 1 or 2, which is characterized in that be poured into along described
Mouth to the direction of pouring basin, the diameter in first casting channel is gradually increased.
4. precast shear wall wall vertical connection structure as claimed in claim 3, which is characterized in that in the shear wall wall
It is provided with the second casting channel being located above the pouring basin, end is docked through the wall in the second casting channel, even
Lead to the pouring basin, second casting channel is formed with casting outlet in the shear wall wall, and second casting is logical
Road passes through the casting entrance fill concrete.
5. precast shear wall wall vertical connection structure as claimed in claim 4, which is characterized in that second casting channel
Including the second straight line section and the second arc segment being vertically arranged, the shear wall wall is run through in one end of second arc segment
Side, form the casting and export, the other end of second arc segment is vertically arranged downward；The bottom of the second straight line section
End is docked through the wall in portion, is connected to the pouring basin, the top of the second straight line section is another with second arc segment
One end docking.
6. precast shear wall wall vertical connection structure as claimed in claim 4, which is characterized in that be exported to along the casting
The direction of pouring basin, the reduced diameter in second casting channel.
7. precast shear wall wall vertical connection structure as claimed in claim 4, which is characterized in that first casting channel
The both ends of the pouring basin are arranged in the second casting channel, in positioned opposite.
8. precast shear wall wall vertical connection structure as claimed in claim 4, which is characterized in that the casting entrance with pour
It outpours mouth and respectively corresponds two opposition sides for being formed in the shear wall wall, in positioned opposite.
9. precast shear wall wall vertical connection structure as described in claim 1, which is characterized in that the angle steel has excurvation
Folding part, along the direction for deviating from the shear wall wall, the outer bending part extends outwardly and has extension, the extension with it is described
Butting steel plate welding.
10. precast shear wall wall vertical connection structure as described in claim 1, which is characterized in that the beam of the Cast-in-situ Beam
End is docked with the notch to lower recess, the butting steel plate is placed in the notch, and the butting steel plate and the beam
Dock end flush arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821399359.0U CN208733869U (en) | 2018-08-27 | 2018-08-27 | Precast shear wall wall vertical connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821399359.0U CN208733869U (en) | 2018-08-27 | 2018-08-27 | Precast shear wall wall vertical connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208733869U true CN208733869U (en) | 2019-04-12 |
Family
ID=66031631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821399359.0U Active CN208733869U (en) | 2018-08-27 | 2018-08-27 | Precast shear wall wall vertical connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208733869U (en) |
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2018
- 2018-08-27 CN CN201821399359.0U patent/CN208733869U/en active Active
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Address after: 518000 2001, building 2, chuangxiang building, Oct, North Station community, Minzhi street, Longhua District, Shenzhen, Guangdong Province Patentee after: Shenzhen Municipal Group Co.,Ltd. Country or region after: China Address before: 518109 Guangdong Shenzhen Longhua New District, Longhua street, Heping Road East, dragon science park, science and technology incubator, 6 floor, D and G Patentee before: SHENZHEN MUNICIPAL ENGINEERING Corp. Country or region before: China |