CN209277088U - Square tube column water-break well and assembling type steel structure water-break system - Google Patents
Square tube column water-break well and assembling type steel structure water-break system Download PDFInfo
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- CN209277088U CN209277088U CN201821924025.0U CN201821924025U CN209277088U CN 209277088 U CN209277088 U CN 209277088U CN 201821924025 U CN201821924025 U CN 201821924025U CN 209277088 U CN209277088 U CN 209277088U
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Abstract
Square tube column water-break well and assembling type steel structure water-break system, belong to construction equipment field, in order to solve to increase water-break well intensity, and the problem of layering drainage clear water, including four square tube columns, the square tube column is to be enclosed to connect and integrally formed hollow rectangle column by Steel material, four square tube columns are two-by-two with respect to the bracket for forming rectangle derrick, the bottom of derrick is bottom steel plate, each two opposite square tube columns, connector is fixed on the opposite cylinder of two square tube columns by bolt, cross-brace angle steel is fixed on cylinder by connector, so that cross-brace angle steel is fixed between the opposite cylinder of two square tube columns, effect is the derrick that water-break well uses column as water-break well, it is with preferable support strength, and the layering installation of multilayer cross-brace angle steel is used for gate, satisfactory clear water layering is able to achieve to draw Stream, it is more preferable for the drainage effect of clear water.
Description
Technical field
The utility model belongs to construction equipment field, is related to assembling type steel structure water-break system and method.
Background technique
The ports boat hydraulic engineerings such as river and lake regulation, waterway regulation, water conservancy dredging and underwater earth excavation are generally used strand and inhale
Formula dredger and bucket-wheel suction dredger construction, this biggish filling area of construction method space required.For filling area, water-break
System is critical work therein, and whether the working method of water-break system is reasonable, is to improve the earthwork and sink to determine effect and ensure
Enclose the key of low bank between fields safety.Traditional overflow-type withdrawal nozzle construction, which sluices, directly overflows into drainage ditch, not only later maintenance cost
It is higher, and there are biggish security risk, once the diseases that occur to seep water, collapse etc. are difficult to handle, it is easy to cause and inrushes.And pipe laying
The construction of formula withdrawal nozzle is inconvenient, and especially in recent years, with the reinforcement of environmental consciousness, filling area is needed after constructing by water-break system
It removes, so as to second ploughing operation, which adds construction periods and engineering economy to bear.
Utility model content
The utility model proposes following technical side to solve the problem of to increase water-break well intensity and layering drainage clear water
Case: a kind of square tube column water-break well, including four square tube columns, the square tube column are to be enclosed to connect and be integrally formed by Steel material
Hollow rectangle column, for four square tube columns two-by-two with respect to the bracket for forming rectangle derrick, the bottom of derrick is bottom steel plate, each opposite
Two square tube columns, connector is fixed on the opposite cylinder of two square tube columns by bolt, and connector is by cross-brace angle
Steel is fixed on cylinder, so that cross-brace angle steel is fixed between the opposite cylinder of two square tube columns, two square tube columns
Opposite cylinder, gate slot is installed in the outside of fixedly connected part position, gate slot is oppositely arranged, and cross-brace angle steel exists
The gate slot of vertical layered installation, the cylinder installation of square tube column is vertically divided into multilayer gate slot, phase by cross-brace angle steel
Pair gate slot in installation gate to form multilayer gate.
Further, multiple cross-brace angle steel vertical arrays be distributed and be connected to two of each side's tube column it is opposite vertical
Intercolumniation, and it is laid in the middle and upper part of column.
Further, the Bolted angle connection that scissors-type intersects is laid in column between two opposite columns of column group
Middle and upper part, the fixed point for the angle steel that scissors-type intersects is connected to the cylinder of square tube column.
Further, the angle steel that scissors-type intersects, be welded in square tube column top-down first, second laterally prop up
Between support angle steel.
Further, the connector and cross-brace angle steel are integrally formed, and fix connector there are two bolt
In square tube column.
Further, the gate slot is to be connect by two side plates with bottom plate or integrally formed trench structure, the bottom of by
The lateral surface of plate is fixed on square tube column, installs gate in slot.
Further, the gate positioned at middle and lower part outputs withdrawal nozzle.
A kind of assembling type steel structure water-break system, the square tube column water-break well, withdrawal nozzle enter with water-break culvert pipe
Mouth connection, derrick, which is nearby arranged, encloses low bank between fields, and water-break culvert pipe, which runs through, to be enclosed inside low bank between fields, the outlet of water-break culvert pipe and the entrance company of energy dissipation tank
Logical, energy dissipation tank is located at water-break culvert pipe downstream, and in topography, energy dissipation tank is lower than water-break culvert pipe, and the outlet setting of energy dissipation tank is inclined at it
Under position, and its outlet water-break open channel.
Further, the lateral distance for enclosing low bank between fields and the length of water-break culvert pipe are substantially isometric, the water-break culvert pipe institute steel
Water-break culvert pipe.
Further, enclosing low bank between fields is to have certain slope ratio, by the enclosed structure of soil body compaction in layers, close to Two bors d's oeuveres channel steel square tube
The slope ratio for enclosing low bank between fields of column water-break well side is 1:2, and the slope ratio enclosed close to energy dissipation tank side is 1:3.
The utility model has the advantages that water-break well uses column as the derrick of water-break well, with preferable support strength, and for lock
Door is able to achieve satisfactory clear water layering drainage, the drainage of clear water is imitated using the layering installation of multilayer cross-brace angle steel
Fruit is more preferable.
Detailed description of the invention
Fig. 1 is the top view of water-break system；
Fig. 2 is the elevation of water-break system；
Fig. 3 is the assembled type steel frame water-break well construction schematic diagram of water-break system；
Fig. 4 is the A-A sectional view of Fig. 3；
Fig. 5 is the B-B sectional view of Fig. 3；
Fig. 6 is the C-C sectional view of Fig. 3；
Fig. 7 is water-break process schematic.
2-1-water-break well, 2-2-water-break culvert pipe, 2-3-energy dissipation tank, 2-4-water-break open channel, 2-5-cross-brace angle
Steel, 2-6-cross-brace angle steel, 2-7-bridging, 2-8-bottom steel plate, 2-9-square tube column, 2-10-gate slot, 2-
11-bolts.
Specific embodiment
Embodiment 1: as seen in figures 3-6, a kind of square tube column water-break well, as shown in fig. 6, including four square tube column 2-
9, the square tube column 2-9 is to be enclosed to connect and integrally formed hollow rectangle column by Steel material, and four square tube column 2-9 are opposite two-by-two
The bracket of rectangle derrick is formed, the bottom of derrick is bottom steel plate 2-8, and each opposite two square tubes column 2-9, bolt 2-11 will connect
Fitting is fixed on the opposite cylinder of two square tube column 2-9, and cross-brace angle steel 2-5 is fixed on cylinder by connector, so that
Cross-brace angle steel 2-5 is fixed between the opposite cylinder of two square tube column 2-9, the opposite column of two square tube column 2-9
Gate slot 2-10 is installed in the outside of fixedly connected part position in face, and gate slot 2-10 is oppositely arranged, as shown in figure 3, laterally
Support angle steel 2-5 is in vertical layered installation, and the gate slot 2-10 of the cylinder installation of square tube column 2-9 is by cross-brace angle steel 2-5
It is vertically divided into multilayer gate slot 2-10, installation gate is in opposite gate slot 2-10 to form multilayer gate.The well of column
Frame structure tool there are four columns to support derrick, and support effect is stronger, and use preferably is in the place of Subgrade soil, and energy
Larger area is enough provided for connecting relevant structure, column is fixed on for connector with bolt, then cross-brace angle is installed
Steel realizes conveniently being detachably connected for cross-brace angle steel, and the connection type adjusts lateral branch with the position of connector
The position of support angle steel and angle, it is direct-connected compared to cross-brace angle steel, it is connected on the basis of having ensured stability more
Flexibly.
As the supplement of technical solution, multiple cross-brace angle steel 2-5 vertical arrays are distributed and are connected to each side's tube column
Between two opposite columns of 2-9, and it is laid in the middle and upper part of column.
As the supplement of technical solution, the angle steel that scissors-type intersects is connected to two of column group as bridging 2-7
Between opposite column, and it is laid in the middle and upper part of column, the fixed point for the angle steel that scissors-type intersects is connected to square tube column 2-9's
Cylinder.In this scenario, main purpose is to be able to separate gate cross-brace angle steel, forms layering drainage, and also can
With cross-brace effect, sidesway caused by separating and being mobile is reduced, since the present invention will form multilayer gate drainage clear water
Purpose, it is, therefore, necessary to avoid sidesway as far as possible, cross-brace angle steel is for when separating gate, the mobile of gate can to cause side
It moves, in order to which this sidesway is minimized, thus, collaboration uses bridging, enables to be displaced parallelogram
Minimum etc. being reduced to, the stability of derrick when conveniently realizing the drainage of multilayer gate solves the problems, such as steadily to drain.
As the supplement of technical solution, the angle steel that scissors-type intersects is welded in top-down the of square tube column 2-9
One, between second cross-brace angle steel 2-5.
As the supplement of technical solution, the connector is integrally formed with cross-brace angle steel 2-5 or seperated connection, and
There are two bolt 2-11 to be fixed on square tube column 2-9 for connector.
As the supplement of technical solution, the gate slot 2-10 is to be connect by two side plates with bottom plate or integrally formed
Trench structure is fixed on square tube column 2-9 by the lateral surface of bottom plate, installs gate in slot.
As the supplement of technical solution, the gate positioned at middle and lower part outputs withdrawal nozzle.
As shown in Figure 1, 2, a kind of assembling type steel structure water-break system, the square tube column water-break well, withdrawal nozzle with
The entrance of water-break culvert pipe 2-2 is connected to, and derrick, which is nearby arranged, encloses low bank between fields, and water-break culvert pipe 2-2, which runs through, to be enclosed inside low bank between fields, water-break culvert pipe 2-2's
Outlet is connected to the entrance of energy dissipation tank 2-3, and energy dissipation tank 2-3 is located at the downstream water-break culvert pipe 2-2, and in topography, energy dissipation tank 2-3 is lower than
Its position on the lower side, and its outlet water-break open channel 2-4 is arranged in the outlet of water-break culvert pipe 2-2, energy dissipation tank 2-3.
As the supplement of technical solution, the lateral distance for enclosing low bank between fields and the length of water-break culvert pipe 2-2 are substantially isometric, and described moves back
Water culvert pipe 2-2 institute steel water-break culvert pipe 2-2.
As the supplement of technical solution, enclosing low bank between fields is to have certain slope ratio, by the enclosed structure of soil body compaction in layers, close to double
The slope ratio for enclosing low bank between fields for spelling channel steel square tube column water-break well side is 1:2, and the slope ratio enclosed close to the side energy dissipation tank 2-3 is 1:3.Enclose low bank between fields
Using the design of interior side slope ratio 1:2, outer side slope ratio 1:3, keep the Water And Earth Pressures bearing capacity of cofferdam lower part bigger, while saving and enclosing low bank between fields
The material filled, safety economy.
The advantages of water-break well is than pipe laying: multiple tracks drainpipe, ability are arranged according to height of water level from top to bottom for buried tube type needs
The drainage requirement for meeting different water levels moves back well-type and only needs that one of drainpipe is arranged in bottommost, by adjusting water-break well
Gate meets the water-break requirement of different water levels；Assembled type steel frame water-break well is formed by connecting by screw machine, and only setting is arranged together
The project amount of water pipe, installation and removal is small compared with buried tube type, and save the cost shortens the construction period.
A kind of embodiment 2: assembling type steel structure water-break system.It include: that assembled type steel frame water-break well, gate sheet, steel move back
Water culvert pipe, energy dissipation tank, water-break open channel, assembled type steel frame water-break well are as follows: square tube square tube column water-break derrick, including four square tubes
Type column, cross-brace angle steel 2-5, bridging 2-7, backwater gate and gate slot 2-10.Four square tube column 2-9 constitute well
The main structure of frame is connected with bottom steel plate 2-8 by pre-embedded bolt 2-11, square tube column 2-9 is made to be fixed on bottom.Cross-brace
Angle steel 2-5 is connect by bolt 2-11 with the reserving hole of square tube column corresponding position, is fixed on cross-brace angle steel 2-5 vertical
On column.Bridging 2-7 uses angle steel, is set between top-down first, second cross-brace angle steel, by welding side
Formula is connected with square tube column 2-9.Bottom steel plate 2-8 is placed on the basis reinforced, passes through pre-embedded bolt and the basic phase on basis
Even.With on square tube column, sealing system is collectively formed in gate slot, with derrick in backwater gate frame for gate slot welding.
Embodiment 3: as shown in fig. 7, a kind of water-break method, is directed to any water-break in above-described embodiment 1-3
The combination of different water-break wells in well or two embodiments, this combination, which can be formed, moves back water well system, i.e., by two kinds of differences
Refund well be combined to be formed and move back water well system, water-break well location is clear water in mud-dumping yard topography lowest part, the top of mud-dumping yard,
When the backwater gate of water-break well is opened, clear water can flow into water-break well, be arranged clear water by the water-break culvert pipe being connected to water-break well
Mud-dumping yard out flows into river nearby.
As the supplement of technical solution, the muddy water with water content is discharged into mud-dumping yard, is made through natural sedimentation and in gravity
The mud-water separation with lower, mud sink and stay in mud-dumping yard, and clear water been separated in top, and multiple tracks sealing lock is arranged in water-break well
Door, and backwater gate is separated out one of backwater gate by every two cross-brace angle steel, according to clear water in vertical staged distribution
Highly, certain road backwater gate of corresponding height is opened in selection, when the height of clear water reaches higher than at the top of certain one of backwater gate,
The road backwater gate to be opened, clear water is introduced in water-break well, clear water discharge is enclosed low bank between fields by the water-break culvert pipe of water-break underground portion connection, and
Flow into river nearby.
The installation method (water-break construction method) of assembling type steel structure water-break system is as follows:
1. bottom steel plate is implemented:
1.1 determine withdrawal nozzle lowest elevations, fill at withdrawal nozzle bottom plate and cofferdam construction while carrying out, bottom soil body is rammed
Packing is real；
1.2 place withdrawal nozzle center line, manual amendment substrate, and derrick foundation trench plan-position deviation is not more than ± 10mm, high
Journey deviation ± 10mm, culvert pipe plan-position deviation are not more than ± 50mm；
1.3 substrates are laid with the rubble of 30cm thickness and compacting, and derrick footing uses C30 concrete, place the contact of bottom steel plate
Face carries out flat and smooth processing；Vibration compacting is carried out to cast-in-place concrete, keeps basis clear with the pre-embedded bolt surface of bottom steel plate
It is clean, no mortar adherency；
2. the installation of derrick:
2.1 remove the sundries at the positions such as each component, contact surface and the connection holes such as derrick geometry, carry out preservative treatment；
Before the installation of 2.2 derrick columns, it is no less than the firm hawser of 3 sufficient lengths in column top system, and close in distance
The position of reason sets bollard, and loop wheel machine lifts by crane derrick column to the top of preburied column, gently leans on limiting device and keep column steady
Fixed, installation connecting element blending bolt is fixed, and hawser is fastened, and then sheds lifting hawser；
After 2.3 columns are all installed, connection beam is from bottom to top installed to topmost, then bridging is installed, finally
Removal fixes hawser；
3. water-break culvert pipe based process:
3.1 culvert pipe bases are ground undisturbed soil, keep the homogeneity of the soil body as far as possible；
Bottom elevation behind 3.2 artificial clear bottoms, control 150~250mm below design culvert pipe bottom elevation；
3.3 backfill earth material selections, should select uniform, infiltration coefficient very little (small using soil body osmotic coefficient under normal circumstances
In 1.2*10-6The soil body of cm/s), through culvert pipe weight and additional force extruding can come into full contact with culvert pipe, can be played after hand punning
Close the soft modeling shape clay of water effect；
3.4, which bury area to culvert pipe using the soft plasticviscosity soil body for manually or mechanically excavating lower layer in mud-dumping yard, backfills,
It is backfilled to culvert pipe design bottom elevation or more, and consolidates leveling；
After 3.5 check tamping, culvert pipe axis direction flatness should be controlled within ± 50mm, and every meter of culvert pipe direction extends flat
Whole degree is not more than 50mm, provides guarantee for the installation quality of culvert pipe；
4. culvert pipe fabrication and installation:
When 4.1 steel culvert pipe make, sectional making is carried out, to reduce installation difficulty, culvert pipe all uses sleeve type structure；
The connection of 4.2 culvert pipe and derrick is attached by flange and the baffle being mounted on derrick；
Culvert pipe erection stage is immediately entered after 4.3 based process are good, avoids culvert pipe and the soil body after tamping after soil body desiccation
It is unable to fully contact；
The installation of 4.4 culvert pipe is from top to bottom socketed installation；Culvert pipe is limited before backfill；In culvert pipe after being installed
Upper load makes culvert pipe be deposited to design bottom elevation, then backfills soft modeling soil in its side and top and consolidates；
4.5 culvert pipe sides and top backfill soft plastic clay can merogenesis, layering carry out, can also carry out simultaneously；
5. energy dissipation tank is installed:
5.1 steel energy dissipation tanks are transported to scene in engineering production and are installed, and energy dissipation tank draining tail portion sets twice energy dissipating bank；
5.2 energy dissipation tanks are attached with water-break culvert pipe by flange, energy dissipation tank pedestal rammer fill out it is solid, pedestal press 3% gradient
It is tilted to water-break open channel direction；
6. backwater gate fabrication and installation:
6.1 gate sheets use wood materials, to avoid gate sheet from rising phenomenon occur, using high density timber (high density
It meets the requirements as long as the high density selection of timber reaches to avoid floating)；
The contact surface of 6.2 gate sheets and gate sheet, gate sheet and gate slot carries out smooth treatment；The contact surface of plate and plate is flat
Face degree error is not more than 1mm；Gate sheet length is 4~6mm smaller than gate slot spacing, after ensuring gate sheet installation, plate and plate, plate with
Good, no mud water clock is contacted between slot；
7. recycling is removed:
Before 7.1 recycling, under the premise of guaranteeing water-break water quality, part gate sheet is played out, limitedly to exclude in mud-dumping yard
Ponding；
7.2 block culvert pipe import, guarantee that mud does not leak；
7.3 unclamp and take out the bolt between derrick column and built-in fitting；
7.4 unload part bypass damper plate, enter soil in well, to keep borehole wall internal and external pressure balance；
7.5 installation hoist ropes are lifted by crane, to recycle derrick；
When 7.6 steel culvert pipe recycle, the back slope soil body is excavated to training thickness is carried out before weir, is pulled out back again after meeting safety requirements
It receives.
7.5 installation hoist ropes are lifted by crane, to recycle derrick；
When 7.6 steel culvert pipe recycle, the back slope soil body is excavated to training thickness is carried out before weir, is pulled out back again after meeting safety requirements
It receives.
Above-mentioned, water-break well location is in mud-dumping yard topography lowest part, and the top clear water of mud-dumping yard, when gate is opened, inflow is moved back
Well, and mud-dumping yard is discharged by water-break culvert pipe, flow into river nearby.The gate of water-break well: multiple tracks sealing lock is arranged in water-break well
Door, specific number are arranged according to requirement of engineering.Every two cross-brace angle steel is separated out one of backwater gate.According to the height of clear water
Certain road gate is opened in degree, selection, and clear water is introduced in well and is discharged.Drainage procedure: dredger (cleaning river lower part mud) will contain
The higher muddy water of water is discharged into mud-dumping yard, and by natural sedimentation, under the effect of gravity, mud-water separation, mud sinks, and keeps spoil disposal
In.Clear water separation opens the road gate, makes clear water stream on top when the height of clear water reaches at the top of higher than one gate
Enter water-break well, says that low bank between fields (enclose low bank between fields surround be mud-dumping yard) is enclosed in clear water discharge by the water-break culvert pipe in water-break underground portion.
The preferable specific embodiment of the above, only the invention, but the protection scope of the invention is not
It is confined to this, anyone skilled in the art is in the technical scope that the invention discloses, according to the present invention
The technical solution of creation and its inventive concept are subject to equivalent substitution or change, should all cover the invention protection scope it
It is interior.
Claims (10)
1. a kind of square tube column water-break well, which is characterized in that including four square tube columns (2-9), the square tube column (2-9)
It is to be enclosed to connect and integrally formed hollow rectangle column by Steel material, four square tube columns (2-9) are two-by-two with respect to formation rectangle derrick
Bracket, the bottom of derrick are bottom steel plate (2-8), each two opposite square tube columns (2-9), and bolt (2-11) fixes connector
In the opposite cylinder of two square tube columns (2-9), cross-brace angle steel (2-5) is fixed on cylinder by connector, so that laterally
Support angle steel (2-5) is fixed between the opposite cylinder of two square tube columns (2-9), two square tube columns (2-9) it is opposite
Cylinder installs gate slot (2-10) in the outside of fixedly connected part position, and gate slot (2-10) is oppositely arranged, cross-brace
Angle steel (2-5) is in vertical layered installation, and the gate slot (2-10) of the cylinder installation of square tube column (2-9) is by cross-brace angle steel
(2-5) is vertically divided into multilayer gate slot (2-10), and installation gate is in opposite gate slot (2-10) to form multilayer gate.
2. square tube column water-break well as described in claim 1, which is characterized in that multiple cross-brace angle steel (2-5) are vertical
Arranged distribution is simultaneously connected between two opposite columns of each side's tube column (2-9), and is laid in the middle and upper part of column.
3. square tube column water-break well as described in claim 1, which is characterized in that the angle steel that scissors-type intersects is as bridging
(2-7) is connected between two opposite columns of column group, and is laid in the middle and upper part of column, the angle steel that scissors-type intersects
Fixed point be connected to the cylinder of square tube column (2-9).
4. square tube column water-break well as claimed in claim 3, which is characterized in that the angle steel that scissors-type intersects, the side of being welded in
Between the top-down first, second cross-brace angle steel (2-5) of tube column (2-9).
5. square tube column water-break well as described in claim 1, which is characterized in that the connector and cross-brace angle steel
(2-5) is integrally formed, and connector is fixed on square tube column (2-9) there are two bolt (2-11).
6. square tube column water-break well as described in claim 1, which is characterized in that the gate slot (2-10) is by two
Side plate is connect with bottom plate or integrally formed trench structure, is fixed on square tube column (2-9) by the lateral surface of bottom plate, installation in slot
Gate.
7. square tube column water-break well as claimed in any one of claims 1 to 6, which is characterized in that the gate positioned at middle and lower part is opened
Withdrawal nozzle out.
8. a kind of assembling type steel structure water-break system, which is characterized in that including square tube column water-break as claimed in claim 7
Well, withdrawal nozzle are connected to the entrance of water-break culvert pipe (2-2), and derrick, which is nearby arranged, encloses low bank between fields, and water-break culvert pipe (2-2), which runs through, to be enclosed in low bank between fields
The outlet in portion, water-break culvert pipe (2-2) is connected to the entrance of energy dissipation tank (2-3), and energy dissipation tank (2-3) is located under water-break culvert pipe (2-2)
Trip, in topography, energy dissipation tank (2-3) is lower than water-break culvert pipe (2-2), its position on the lower side is arranged in the outlet of energy dissipation tank (2-3),
And its outlet water-break open channel (2-4).
9. as claim 8 assembling type steel structure water-break system, which is characterized in that enclose low bank between fields lateral distance and water-break culvert pipe
The length of (2-2) is substantially isometric, described water-break culvert pipe (2-2) the institute's steel water-break culvert pipe (2-2).
10. as claim 8 assembling type steel structure water-break system, which is characterized in that enclosing low bank between fields is to have certain slope ratio, will be native
The enclosed structure of body compaction in layers, the slope ratio for enclosing low bank between fields close to Two bors d's oeuveres channel steel square tube column water-break well side is 1:2, close to energy dissipating
The slope ratio enclosed of the side pond (2-3) is 1:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821924025.0U CN209277088U (en) | 2018-11-21 | 2018-11-21 | Square tube column water-break well and assembling type steel structure water-break system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821924025.0U CN209277088U (en) | 2018-11-21 | 2018-11-21 | Square tube column water-break well and assembling type steel structure water-break system |
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| CN209277088U true CN209277088U (en) | 2019-08-20 |
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| CN109356085A (en) * | 2018-11-21 | 2019-02-19 | 安徽省交通航务工程有限公司 | Square tube column water-break well and assembling type steel structure water-break system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356085A (en) * | 2018-11-21 | 2019-02-19 | 安徽省交通航务工程有限公司 | Square tube column water-break well and assembling type steel structure water-break system |
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