CN110528711A - The connecting node of caisson - Google Patents
The connecting node of caisson Download PDFInfo
- Publication number
- CN110528711A CN110528711A CN201910916714.XA CN201910916714A CN110528711A CN 110528711 A CN110528711 A CN 110528711A CN 201910916714 A CN201910916714 A CN 201910916714A CN 110528711 A CN110528711 A CN 110528711A
- Authority
- CN
- China
- Prior art keywords
- caisson
- boss
- waterproof
- connecting node
- side plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011065 in-situ storage Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 14
- 230000009977 dual effect Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The present invention relates to a kind of connecting nodes of caisson, including wainscot sheathing, caisson, in-situ layer and the first waterproof case.Caisson is located at the side of the wainscot sheathing, and the caisson includes bottom plate and the side plate that is fixedly connected on the upside of the bottom plate, and the top of the side plate is convexly equipped with first boss；First waterproof case is embedded in the side plate in advance, and first waterproof case is stretched out from the top of the first boss；In-situ layer takes shape in the top of the wainscot sheathing and the side plate so that the first boss and first waterproof case be pierced by the first boss be partially submerged into the in-situ layer.By the connecting node that above-mentioned caisson is arranged, being formed in the first boss of caisson side plate top and being set to the first waterproof case of first boss can be fixedly connected when cast-in-place concrete forms in-situ layer with in-situ layer, the water in caisson, which can be effectively prevented, did not had the side plate of caisson to enter in wall, achieve the effect that dual waterproof, it is ensured that caisson has good waterproof effect.
Description
Technical field
The present invention relates to assembled architecture field of engineering technology, more particularly to a kind of connecting node of caisson.
Background technique
Existing assembled toilet generallys use caisson way, i.e., toilet is done to integral full precast caisson, In
Main body partly or wholly sinks toilet structure sheaf apart from corresponding flooring certain altitude when building, so that toilet horizontal drainage
Pipe is embedded to wherein, then is backfilled with light material, and structural plane only needs to be arranged a hole and passes through as soil stack.But
After mounting due to existing caisson, the case where being easy to happen leak.
Summary of the invention
Based on this, it is necessary to aiming at the problem that the case where being easy to happen leak after existing caisson placing, provide a kind of energy
Enough ensure the connecting node of the caisson of the good waterproof performance of full precast caisson.
A kind of connecting node of caisson, including；
Wainscot sheathing；
Caisson, positioned at the side of the wainscot sheathing, the caisson includes bottom plate and is fixedly connected on the upside of the bottom plate
The top of side plate, the side plate is convexly equipped with first boss；
First waterproof case is embedded in the side plate in advance, and first waterproof case is stretched out from the top of the first boss；
In-situ layer takes shape in the top of the wainscot sheathing and the side plate, so that the first boss and described first anti-
What water part was pierced by the first boss is partially submerged into the in-situ layer.
By the way that the connecting node of above-mentioned caisson is arranged, it is formed in the first boss of caisson side plate top and is set to the
First waterproof case of one boss can be fixedly connected when cast-in-place concrete forms in-situ layer with in-situ layer, and it is heavy to can be effectively prevented
Water in case did not had the side plate of caisson to enter in wall, achieved the effect that dual waterproof, it is ensured that caisson is imitated with good waterproof
Fruit.Meanwhile the setting of first boss can also preferably to be combined between in-situ layer and caisson, to ensure the connection section of the caisson
The structural behaviour of point.
The first boss extends along the longitudinally of the side plate in one of the embodiments, first waterproof
Part extends along the longitudinally of the first boss.
In one of the embodiments, first waterproof case include the first waterproof portion and the first fixed part, described first
Waterproof portion top is pierced by the first boss, and the bottom end in first waterproof portion is protruded into the side plate, first fixed part
Angularly it is fixedly connected on the bottom end in first waterproof portion.
The connecting node of the caisson further includes taking shape in the in-situ layer far under described in one of the embodiments,
The plugged zone of the side of wallboard and the second boss for protruding from the plugged zone top；
The connecting node of the caisson further includes cornice sheathing, and the cornice sheathing is set to the top of the plugged zone, and institute
Second boss is stated to be embedded in the cornice sheathing.
The connecting node of the caisson further includes the second waterproof case in one of the embodiments, second waterproof case
One end is fixedly connected on the second boss, and the other end is pierced by the plugged zone and protrudes into the in-situ layer, with it is described cast-in-place
Layer is fixedly connected.
The wainscot sheathing includes lower wall and the connection that is pierced by from the lower wall top in one of the embodiments,
Muscle, the cornice sheathing include upper wall and are set to the intracorporal sleeve of upper wall, and the dowel is arranged in the sleeve, institute
It states second boss and is located at side of the sleeve far from the caisson.
In one of the embodiments, second waterproof case include the second waterproof portion and the second fixed part, described second
The top in waterproof portion is protruded into the second boss, and the bottom end in second waterproof portion is protruded into the in-situ layer, and described second
Fixed part is angularly fixedly connected on the bottom end in second waterproof portion.
First waterproof case and second waterproof case are L shape steel plate in one of the embodiments,.
First waterproof case is rubber fastening band in one of the embodiments,.
The quantity of the side plate is multiple in one of the embodiments, and multiple side plates and the bottom plate enclose and set shape
It is the uncovered structure of opening at side, the shape of first waterproof case is identical as the shape of the opening.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the connecting node for the caisson that one embodiment of the invention provides；
Fig. 2 is the caisson of the connecting node of caisson shown in FIG. 1 and the connection relationship diagram of the first waterproof case.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " it include one or more phases
Any and all combinations of the listed item of pass.
As shown in Figures 1 and 2, the connecting node 10 for the caisson 14 that one embodiment of the invention provides, including it is wainscot sheathing 12, heavy
Case 14, in-situ layer 16 and the first waterproof case 18.
Caisson 14 is located at the side of wainscot sheathing 12, and caisson 14 includes bottom plate 142 and the side for being fixedly connected on 142 upside of bottom plate
Plate 144,144 top of side plate are convexly equipped with first boss 141.
First waterproof case 18 is embedded in side plate 144 in advance, and the first waterproof case 18 is stretched out from the top of first boss 141.
In-situ layer 16 takes shape in the top of wainscot sheathing 12 and side plate 144, so that first boss 141 and the first waterproof case 18 are worn
First boss 141 is partially submerged into in-situ layer 16 out.
By the way that the connecting node of above-mentioned caisson is arranged, be convexly equipped in 14 side plate of caisson, 144 top first boss 141 and
The first waterproof case 18 for being set to first boss 141, which can be fixed when cast-in-place concrete forms in-situ layer 16 with in-situ layer 16, to be connected
It connects, the water in caisson 14 can be effectively prevented and do not had the side plate 144 of caisson 14 to enter in wall, achieve the effect that dual waterproof,
Ensure that caisson 14 has good waterproof effect.Meanwhile the setting of first boss 141 can also make in-situ layer 16 and caisson 14 it
Between preferably combine, to ensure the structural behaviour of the connecting node.
In some embodiments, which further includes taking shape in the closure of side of the in-situ layer 16 far from wainscot sheathing 12
Layer 112, the second boss 114 and cornice sheathing 13 for protruding from 112 top of plugged zone, cornice sheathing 13 are set to plugged zone 112
Top, and second boss 114 is embedded in cornice sheathing 13.
Further, wainscot sheathing 12 includes lower wall 122 and the dowel 124 being pierced by from lower 122 top of wall, cornice sheathing
13 are arranged in sleeve 134, second boss including upper wall 132 and the sleeve 134 being set in wall 132, dowel 124
114 are located at side of the sleeve 134 far from caisson 14.
It is understood that cornice sheathing 13 is positioned by dowel 124 with sleeve 134 with wainscot sheathing 12, it is then past
Slip casting is carried out in sleeve 134 so that cornice sheathing 13 is fixed, this is the usual manner of prefabricated panel installation.And plugged zone 112 is practical
On be and to be formed before slip casting after cornice sheathing 13 and wainscot sheathing 12 position, particularly due to cornice sheathing 13 is under after fixed
There are certain intervals between wallboard 12, fill mortar into the gap, to form plugged zone 112.
Meanwhile the effect of plugged zone 112 and second boss 114 further includes forming the cavity of slip casting, and by second boss 114
It is set to side of the sleeve 134 far from caisson 14, slurries overflow when can be effectively prevented from slip casting.
In addition, second boss 114 and plugged zone 112 can actually regard integral structure, the formation of second boss 114 as
It is then to open up a groove in the bottom end of upper wall 132 in advance, mortar also can just will form protrusion full of in groove after filling mortar
Second boss 114 in 112 top of plugged zone.
In this way, compared to do not open up groove formed second boss 114 the case where, can more effectively avoid wall 132 with
The gap that leak is generated between plugged zone 112, to avoid leakage hidden trouble.
It is to be understood that in-situ layer 16 and plugged zone 112 are after-pourings, and cornice sheathing 13 be it is prefabricated, therefore
The connection that can exist between plugged zone 112 and in-situ layer 16 is more more stable than the connection between plugged zone 112 and cornice sheathing 13,
The leak gap that namely 112 position of plugged zone occurs is substantially between cornice sheathing 13 and plugged zone 112.
In some embodiments, the connecting node of caisson further includes the second waterproof case 19, and 19 one end of the second waterproof case is fixed
It is connected to second boss 114, the other end is pierced by plugged zone 112 and protrudes into in-situ layer 16, to be fixedly connected with in-situ layer 16.The
Two waterproof cases 19 are identical as the effect of the first waterproof case 18, are to be avoided with boss shape at dual waterproof with ensuring waterproof effect
The presence of leakage hidden trouble.
In some embodiments, the first waterproof case 18 includes the first waterproof portion and the first fixed part, the first waterproof portion top
It is pierced by first boss 141 and protrudes into in-situ layer 16, the bottom end in the first waterproof portion is protruded into side plate 144, and the first fixed part is in angle
Degree it is fixedly connected on the bottom end in the first waterproof portion.
Further, the second waterproof case 19 includes the second waterproof portion and the second fixed part, and the top in the second waterproof portion is protruded into
In second boss 114, the bottom end in the second waterproof portion is protruded into in-situ layer 16, and the second fixed part is angularly fixedly connected on second
The bottom end in waterproof portion.
Specifically, the first waterproof case 18 and the second waterproof case 19 are L shape steel plate.
Need to be illustrated, thus the quantity of the side plate 144 of caisson 14 be it is multiple, and be sequentially connected end to end, with
Bottom plate 142, which encloses, to be set to form the uncovered structure with a side opening, and 144 top of side plate setting first boss 141 refers to multiple sides
The top of plate 144 is provided with first boss 141, and first boss 141 is the longitudinally extension along side plate 144 in fact, multiple
First boss 141 on side plate 144 is also connection, to ensure whole waterproof effect.
In addition, the setting form of corresponding first boss 141, the first waterproof case 18 is also to be set at first boss 141,
Namely the first waterproof case 18 is the longitudinally extension along first boss 141, and the first waterproof case 18 is actually also a frame
Shape structure, and the global shape of the frame-shaped construction is identical as the shape that caisson 14 is open.Meanwhile the cross section shape of the frame-shaped construction
Shape is L shape, and the fixed part of the L tee section is directed towards in frame.It certainly, can also be with multiple in some other embodiment
One waterproof case 18 is set at the first boss 141 on four side plates 144, the first waterproof of preferably one frame-shaped construction
Part 18.
That is, the connection relationship diagram of caisson 14 shown in Fig. 2 and the first protector is just for the sake of indicating the
It is identical with the shape that caisson 14 is open that the global shape of one protector is.
Please continue to refer to Fig. 2, in some embodiments, the first protector 18 is rubber fastening band.The shape of rubber fastening band
It is identical as the shape that caisson 14 is open that shape is.
It is understood that the first waterproof case 18 is embedded in advance in the side plate 144 of caisson 14 when caisson 14 is prefabricated
, and first boss 141 is also to be formed when prefabricated, that is to say, that caisson 14 and the first waterproof case 18 can actually be regarded as
It is integral structure, difference is only that the two material is different.
It needs to be illustrated, after caisson 14 is installed and carries out the pouring of in-situ layer 16, caisson 14 and in-situ layer 16
Between construction joint can be separated to form anti-water effect by rubber fastening band, and reach between caisson 14 and in-situ layer 16 stablize before
In the presence of the relative displacement due to deformation quantity to expand with heat and contract with cold is different or structure stress, rubber fastening band is scalable, improves waterproof effect
Fruit.
Certainly, the displacement of relative displacement is smaller, and the influence to steel plate for sealing water can be ignored, simultaneously because rubber fastening band
Material problem, the influence to concrete binding power is bigger compared to steel plate for sealing water, thus the first waterproof case 18 preferably only
Water steel plate.
In some embodiments, second boss 114 and the generation type of the second waterproof case 19 and first boss 141 and first
The generation type of waterproof case 18 is similar, but the second waterproof case 19 is to be fixed on in-situ layer 16 in pouring molding in-situ layer 16
Predeterminated position, that is, the position of the groove of above-mentioned upper wall 132 is corresponded to, after upper wall 132 positions, pouring molding second boss
114.In this way, second boss 114 is also fixed as one with the second waterproof case 19.
In some embodiments, the connecting node of caisson further includes support mode 15 and precast floor slab 17, support mode 15
It is set to side of the wainscot sheathing 12 far from caisson 14, precast floor slab 17 is supported in support mode 15, to be formed with support mode 15
Molding space for pouring molding in-situ layer 16.
Relationship between above-mentioned support mode 15 and precast floor slab 17 and in-situ layer 16 is ripe for those skilled in the art
Know, be the common form of construction work of assembled architecture, therefore does not repeat them here.In addition, used between wall, floor and caisson 14
The reinforced structures such as some reinforcing bars are also routine techniques, are not repeated them here.
Compared with prior art, the connecting node of caisson provided by the invention has at least the following advantages:
1) being formed in the first boss of caisson side plate top and be set to the first waterproof case of first boss can be existing
Pouring concrete is fixedly connected when forming in-situ layer with in-situ layer, and the water in caisson can be effectively prevented and do not had the side plate of caisson to enter
In wall, achieve the effect that dual waterproof, it is ensured that caisson has good waterproof effect；
2) setting of first boss can also preferably to be combined between in-situ layer and caisson, to ensure the connecting node
Structural behaviour；
3) setting of second boss and the second waterproof case efficiently avoids generating leak between wall and plugged zone
Gap, it may have dual waterproof effect, to avoid that there are leakage hidden troubles.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of connecting node of caisson characterized by comprising
Wainscot sheathing；
Caisson, positioned at the side of the wainscot sheathing, the caisson includes bottom plate and the side plate that is fixedly connected on the upside of the bottom plate,
The top of the side plate is convexly equipped with first boss；
First waterproof case is embedded in the side plate in advance, and first waterproof case is stretched out from the top of the first boss；
In-situ layer takes shape in the top of the wainscot sheathing and the side plate, so that the first boss and first waterproof case
Be pierced by the first boss is partially submerged into the in-situ layer.
2. the connecting node of caisson according to claim 1, which is characterized in that the first boss is along the vertical of the side plate
Length direction extends, and first waterproof case extends along the longitudinally of the first boss.
3. the connecting node of caisson according to claim 1, which is characterized in that first waterproof case includes the first waterproof
Portion and the first fixed part, first waterproof portion top are pierced by the first boss, and institute is protruded into the bottom end in first waterproof portion
It states in side plate, first fixed part is angularly fixedly connected on the bottom end in first waterproof portion.
4. the connecting node of caisson according to claim 1, which is characterized in that the connecting node of the caisson further includes into
Type in side of the in-situ layer far from the wainscot sheathing plugged zone and protrude from the second boss on the plugged zone top；
The connecting node of the caisson further includes cornice sheathing, and the cornice sheathing is set to the top of the plugged zone, and described
Two boss are embedded in the cornice sheathing.
5. the connecting node of caisson according to claim 4, which is characterized in that the connecting node of the caisson further includes
Two waterproof cases, second waterproof case one end are fixedly connected on the second boss, and the other end is pierced by the plugged zone and protrudes into
The in-situ layer, to be fixedly connected with the in-situ layer.
6. the connecting node of caisson according to claim 5, which is characterized in that the wainscot sheathing includes lower wall and from institute
The dowel that lower wall top is pierced by is stated, the cornice sheathing includes upper wall and is set to the intracorporal sleeve of upper wall, described
Dowel is arranged in the sleeve, and the second boss is located at side of the sleeve far from the caisson.
7. the connecting node of caisson according to claim 5, which is characterized in that second waterproof case includes the second waterproof
The top of portion and the second fixed part, second waterproof portion is protruded into the second boss, and the bottom end in second waterproof portion is stretched
Enter in the in-situ layer, second fixed part is angularly fixedly connected on the bottom end in second waterproof portion.
8. the connecting node of caisson according to claim 5, which is characterized in that first waterproof case and described second is prevented
Water part is L shape steel plate.
9. the connecting node of caisson according to claim 1, which is characterized in that first waterproof case is rubber water-proof
Band.
10. the connecting node of caisson according to claim 1, which is characterized in that the quantity of the side plate be it is multiple, it is multiple
The side plate and the bottom plate enclose the uncovered structure for setting and forming side to be open, the shape and the opening of first waterproof case
Shape it is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916714.XA CN110528711A (en) | 2019-09-26 | 2019-09-26 | The connecting node of caisson |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916714.XA CN110528711A (en) | 2019-09-26 | 2019-09-26 | The connecting node of caisson |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110528711A true CN110528711A (en) | 2019-12-03 |
Family
ID=68670252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910916714.XA Pending CN110528711A (en) | 2019-09-26 | 2019-09-26 | The connecting node of caisson |
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| Country | Link |
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| CN (1) | CN110528711A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000212930A (en) * | 1999-01-22 | 2000-08-02 | Hitachi Zosen Corp | Joint structure of prefabricated caisson and prefabricated caisson |
| CN105908878A (en) * | 2016-05-31 | 2016-08-31 | 中民筑友科技投资有限公司 | External wall panel mounting joint |
| CN206189870U (en) * | 2016-05-31 | 2017-05-24 | 中民筑友科技投资有限公司 | Improves construction quality, |
| CN206693265U (en) * | 2017-01-22 | 2017-12-01 | 中民筑友科技（衡阳）有限公司 | A kind of installation node of piping lane |
| CN208718016U (en) * | 2018-06-29 | 2019-04-09 | 湖南东方红建设集团有限公司 | A kind of precast caisson of assembled architecture |
| CN211341214U (en) * | 2019-09-26 | 2020-08-25 | 长沙远大住宅工业集团股份有限公司 | Connecting joint of caisson |
-
2019
- 2019-09-26 CN CN201910916714.XA patent/CN110528711A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000212930A (en) * | 1999-01-22 | 2000-08-02 | Hitachi Zosen Corp | Joint structure of prefabricated caisson and prefabricated caisson |
| CN105908878A (en) * | 2016-05-31 | 2016-08-31 | 中民筑友科技投资有限公司 | External wall panel mounting joint |
| CN206189870U (en) * | 2016-05-31 | 2017-05-24 | 中民筑友科技投资有限公司 | Improves construction quality, |
| CN206693265U (en) * | 2017-01-22 | 2017-12-01 | 中民筑友科技（衡阳）有限公司 | A kind of installation node of piping lane |
| CN208718016U (en) * | 2018-06-29 | 2019-04-09 | 湖南东方红建设集团有限公司 | A kind of precast caisson of assembled architecture |
| CN211341214U (en) * | 2019-09-26 | 2020-08-25 | 长沙远大住宅工业集团股份有限公司 | Connecting joint of caisson |
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