CN109778866A - Combination supporting system and its construction method for foundation pit central island basin excavation - Google Patents
Combination supporting system and its construction method for foundation pit central island basin excavation Download PDFInfo
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- CN109778866A CN109778866A CN201811562884.4A CN201811562884A CN109778866A CN 109778866 A CN109778866 A CN 109778866A CN 201811562884 A CN201811562884 A CN 201811562884A CN 109778866 A CN109778866 A CN 109778866A
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Abstract
The present invention provides a kind of combination supporting systems and its construction method for foundation pit central island basin excavation, the present invention is by adding the dual spindle soil-cement mixing pile gravity type enclosure wall for grating of drawing squares to replace soil body slope, after set steel diagonal brace after the completion of high building bottom plate one-piece casting again, subsequent construction work is carried out.Soil body slope is replaced by dual spindle soil-cement mixing pile gravity type enclosure wall, can suitably shorten the length of steel diagonal brace, reduce its influence to foundation pit deformation；Simultaneously, the part basis bottom plate position of the basement to be onstructed of the edge side of the foundation pit is extended close to by the sole plate of the high building, solve high building bottom plate cutting problem caused by central island basin earthwork excavation, the sole plate one-piece casting of high building is completed, the globality and continuity for guaranteeing turret structure, other quality problems such as leak caused by also avoiding construction in later period seam from dealing with improperly.
Description
Technical field
The present invention relates to a kind of combination supporting systems and its construction method for foundation pit central island basin excavation.
Background technique
With the acceleration of urbanization process, the development and utilization degree of the underground space is continued to increase, and is thus generated a large amount of
Plane figure is huge, the irregular base pit engineering of size, and forms a variety of targeted foundation pit enclosures and excavation technology.Mesh
Before, existing building, road and underground utilities are closed on for soft clay area and the area of plane is larger, the general foundation pit of cutting depth
Engineering, other than the conventional form for adding large-scale horizontal struts system, " central island " bearing diagonal foundation pit supporting method is also at this
It is applied and promotes in class base pit engineering.
The basic principle of generally " central island " bearing diagonal foundation pit supporting method is: construction foundation pit border fender body first, benefit
Stayed with foundation pit periphery the passive area soil body set resist foundation pit enclosure body lateral deformation, carry out middle part soil body slope basin excavation and
The middle part sole plate other than soil is stayed to construct；It is completed to the middle part sole plate construction stayed other than soil and reaches preset strength
Afterwards, vertical diagonal brace is set to control slope deforming using middle part sole plate as brace foundation；Then periphery is excavated again stays soil,
Simultaneously support replacement strip is arranged in pouring construction periphery sole plate；Vertical diagonal brace is finally removed, basement structure is completed in construction.
The key of this " central island " bearing diagonal construction is to ensure that on the inside of foundation pit enclosure structure that reserving earthen platform has enough width
Degree, while the passive area soil body compared using reasonable slope slope and carry out slope, level-one or two-stage need to be carried out according to deep feeling condition is dug
Slope causes elastic compression and temperature stress because of diagonal brace itself to base so that the length of the vertical diagonal brace of subsequent setting is longer
Hole deformation is affected.Current large-scale excavation engineering has more building skyscrapers, and periphery slope stays native region often
High-rise bottom plate is cut to, the integrality and continuity of turret structure are destroyed, so that it is good to ensure that main structure has
Anti-seismic performance；If the problems such as later period treatment of construction joints is improper simultaneously, and structure will appear the percolating water along gap, may make when serious
Unqualified at building structure quality, final acceptance of construction can not pass through in time.
Summary of the invention
The purpose of the present invention is to provide a kind of combination supporting systems and its construction for foundation pit central island basin excavation
Method, the length for being able to solve vertical diagonal brace is longer, causes elastic compression and temperature stress because of diagonal brace itself to foundation pit deformation
The problem of being affected；And current large-scale excavation engineering has more building skyscrapers, periphery slope stays native region often
High-rise bottom plate can be cut to, the integrality and continuity of turret structure are destroyed, if later period treatment of construction joints is improper, structure can go out
Now along gap the problems such as percolating water.
To solve the above problems, the present invention provides a kind of combination supporting system for foundation pit central island basin excavation, packet
It includes:
It is set to the building enclosure on the periphery of foundation pit；
The armored concrete capping beam being set at the top of the building enclosure；
Dual spindle soil-cement gravity type enclosure wall, the edge side for closing on the foundation pit being set to by high building position to be onstructed
Region；
It is formed in the sole plate of the high building on the high building position to be onstructed after excavating the soil body, the base of the high building
Plinth bottom plate extends close to the part basis bottom plate position of the basement to be onstructed of the edge side of the foundation pit；
It pours in the diagonal brace bracket support on the sole plate of the high building；
Connect the steel diagonal brace of the armored concrete capping beam and diagonal brace bracket support, wherein the steel diagonal brace is successively worn
Cross the soil between the dual spindle soil-cement gravity type enclosure wall, the dual spindle soil-cement gravity type enclosure wall and the building enclosure
Body.
Further, in the above-mentioned combination supporting system for foundation pit central island basin excavation, the dual spindle soil-cement
Ruggedized construction is additionally provided in the soil body between gravity type enclosure wall and the building enclosure.
Further, in the above-mentioned combination supporting system for foundation pit central island basin excavation, further includes:
It is set to notch on the diagonal brace bracket support, one end of the steel diagonal brace is connected in the notch.
Further, in the above-mentioned combination supporting system for foundation pit central island basin excavation, the building enclosure packet
Include: SMW engineering method stake is gone along with sb. to guard him or cast-in-situ bored pile combination Soil-cement pile water stopping curtain goes along with sb. to guard him pattern.
Further, in the above-mentioned combination supporting system for foundation pit central island basin excavation, the steel diagonal brace includes:
Steel pipe diagonal brace or fashioned iron diagonal brace.
Another side according to the present invention provides a kind of construction of combination supporting system for foundation pit central island basin excavation
Method, comprising:
Carry out levelling of the land, the building enclosure on the periphery of construction foundation pit；
After the pre- precipitation of foundation pit, armored concrete to be formed on the soil body to the building enclosure in the foundation pit is excavated
The bottom of capping beam, the armored concrete capping beam described in pouring construction in the building enclosure；
Add the dual spindle soil-cement gravity for beating predetermined width in the region at the edge for closing on the foundation pit of high building to be onstructed
After formula enclosure wall, by the sole plate position of the soil excavation of high building position to be onstructed to high building to be formed；
The sole plate of the high building described in the high building position pouring construction to be onstructed, wherein the basis of the high building
Bottom plate extends close to the part basis bottom plate position of the basement to be onstructed of the edge side of the foundation pit；
Diagonal brace bracket support is poured on the sole plate of the high building；
After the sole plate of the high building, diagonal brace bracket support pour completion and reach preset strength, by the reinforcing bar
Concrete capping beam is connected with diagonal brace bracket support with steel diagonal brace, wherein the steel diagonal brace sequentially passes through the dual spindle soil-cement
The soil body between gravity type enclosure wall, the dual spindle soil-cement gravity type enclosure wall and the building enclosure；
After to the steel diagonal brace inspection of quality and applying prestressing force, excavate the dual spindle soil-cement gravity type enclosure wall with
Position pouring construction institute after the soil body and the dual spindle soil-cement gravity type enclosure wall between the building enclosure, after excavation
Support replacement, this phase is arranged in the close building enclosure side of the sole plate and the sole plate in basement of stating the basement on high building periphery
Between basement structure on the synchronous sole plate for carrying out the high building construction；
After the sole plate of the basement on the high building periphery and the support replacement reach preset strength, it is oblique to remove the steel
Support continues the structure that the basement is completed in construction.
Further, in the above-mentioned methods, after the building enclosure on the periphery of construction foundation pit, further includes:
The soil body between the dual spindle soil-cement gravity type enclosure wall and the building enclosure is reinforced.
Further, in the above-mentioned methods, the armored concrete capping beam and diagonal brace bracket support steel diagonal brace are connected
It connects, comprising:
High notch is opened on the diagonal brace bracket support, one end of the steel diagonal brace is connected in the notch, will be described
The other end of steel diagonal brace is connect with armored concrete capping beam is stated.
Further, in the above-mentioned methods, the building enclosure include: SMW engineering method stake go along with sb. to guard him or cast-in-situ bored pile combine
Soil-cement pile water stopping curtain goes along with sb. to guard him pattern.
Further, in the above-mentioned methods, the steel diagonal brace includes: steel pipe diagonal brace or fashioned iron diagonal brace.
Compared with prior art, it is gone along with sb. to guard him using central island bearing diagonal supporting combination cement stirring pier gravity of the invention
The combination supporting system progress area of plane for foundation pit central island basin excavation of wall is big, the general foundation pit of cutting depth is applied
Work has certain economy and safety.It is embodied in:
1. backing material can be saved largely, construction space is big, effectively improves unearthed efficiency, it is fast that the steel diagonal brace later period removes speed
And it can be recycled, save the duration and save construction investment；
2. diagonal brace length can be shortened suitably, reduce its influence to fender body deformation；
3. being avoided that high building bottom plate cutting caused by central island slope is excavated, guarantee the globality of turret structure and continuous
Property；
4. synchronous construction high building underground can be continued during excavating the periphery soil body, pouring construction periphery sole plate and support replacement
Cell structure can effectively improve the construction speed of high building, meet the construction period demand of owner.
Detailed description of the invention
Fig. 1 is the structural representation of the combination supporting system for foundation pit central island basin excavation of one embodiment of the invention
Figure.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Figure 1, the present invention provides a kind of combination supporting system for foundation pit central island basin excavation, comprising:
It is set to the building enclosure 1 on the periphery of foundation pit；
It is set to the armored concrete capping beam 2 at 1 top of building enclosure；
Here, as shown, the armored concrete capping beam 2 is set to 3 or less nature Horizon absolute altitude；
Dual spindle soil-cement gravity type enclosure wall 4 is set to the edge for closing on the foundation pit by high building position to be onstructed
The region of side；
Here, as shown in Figure 1, forming twin shaft water in the range of the exterior wall 6 of the structure outer 5 of basement and high building is enclosed
Soil gravity type enclosure wall 4, cement stirring pier gravity enclosure wall need to be in the soil excavations of the high building position to be onstructed
Preceding completion construction；
It is formed in the sole plate 7 of the high building on the high building position to be onstructed after excavating the soil body, the high building
Sole plate 7 extends close to 8 position of part basis bottom plate of the basement to be onstructed of the edge side of the foundation pit；
Here, as shown in Figure 1, the seam crossing 9 of the part basis bottom plate 8 of the sole plate 7 of high building and basement is located at ground
8 position of sole plate of lower room, can be to avoid leak the problem of；
It pours in the diagonal brace bracket support 10 on the sole plate 7 of the high building；
Connect the steel diagonal brace 11 of the armored concrete capping beam 2 and diagonal brace bracket support 10, wherein the steel diagonal brace according to
It is secondary across the dual spindle soil-cement gravity type enclosure wall, the dual spindle soil-cement gravity type enclosure wall and the building enclosure
The soil body.
Here, for overlarge area, flat shape is irregular, the general base pit engineering of cutting depth, using it is existing " in
The construction of heart island " bearing diagonal foundation pit supporting method, has preferable safety and economic benefit, but in the construction process, vertical oblique
Support is general longer, and the elastic compression and temperature stress of its own are affected to foundation pit deformation；Periphery slope stays native region simultaneously
Often Cutting Tap bottom of the building plate generate construction joint, make its can not primary concreting complete, it cannot be guaranteed that the globality of turret structure
And continuity, the hidden danger of percolating water is also had at gap.
Cement stirring pier gravity enclosure wall is combined to be formed by the present invention with central island bearing diagonal supporting is used for foundation pit
The combination supporting system of central island basin excavation, i.e. the dual spindle soil-cement mixing pile gravity type enclosure wall generation by adding grating of drawing squares
Subsequent construction work is carried out after set steel diagonal brace after the completion of high building bottom plate one-piece casting again for soil body slope.
Soil body slope is replaced by dual spindle soil-cement mixing pile gravity type enclosure wall, can suitably shorten the length of steel diagonal brace
Degree, reduces its influence to foundation pit deformation；Meanwhile the edge of the foundation pit is extended close to by the sole plate of the high building
The part basis bottom plate position of the basement to be onstructed of side solves the cutting of high building bottom plate caused by central island basin earthwork excavation and asks
Topic, enables the sole plate one-piece casting of high building to complete, guarantees the globality and continuity of turret structure, also the later period is avoided to apply
Other quality problems such as leak caused by work seam is dealt with improperly.
In one embodiment of combination supporting system for foundation pit central island basin excavation of the invention, the dual spindle soil-cement
It is additionally provided with ruggedized construction in the soil body between gravity type enclosure wall and the building enclosure, to guarantee the twin shaft cement into one
The stability of the soil body between native gravity type enclosure wall and the building enclosure.
In one embodiment of combination supporting system for foundation pit central island basin excavation of the invention, further includes:
It is set to notch on the diagonal brace bracket support, one end of the steel diagonal brace is connected in the notch, to guarantee
The firm supporting degree of the steel diagonal brace.
In one embodiment of combination supporting system for foundation pit central island basin excavation of the invention, the building enclosure packet
Include: SMW engineering method stake is gone along with sb. to guard him or cast-in-situ bored pile combination Soil-cement pile water stopping curtain goes along with sb. to guard him pattern.
Here, can be can be selected according to cutting depth and local environmental conditions, the stake of SMW engineering method is gone along with sb. to guard him or cast-in-situ bored pile combines
Soil-cement pile water stopping curtain goes along with sb. to guard him pattern.
In one embodiment of combination supporting system for foundation pit central island basin excavation of the invention, the steel diagonal brace includes
Steel pipe diagonal brace or fashioned iron diagonal brace.
Here, the steel diagonal brace can select steel pipe diagonal brace or fashioned iron diagonal brace according to engineering practice, high building region need to be to
It slots again after the completion of its sole plate one-piece casting and sets up steel diagonal brace.
As shown in Figure 1, applying the present invention also provides another combination supporting system for foundation pit central island basin excavation
Work method, comprising:
Step S1 carries out levelling of the land, the building enclosure 1 on the periphery of construction foundation pit；
Step S2 excavates steel to be formed on the soil body to the building enclosure 1 in the foundation pit after the pre- precipitation of foundation pit
The bottom of reinforced concrete capping beam 2, the armored concrete capping beam 2 described in pouring construction in the building enclosure 1；
Step S3 adds the twin shaft cement for beating predetermined width in the region at the edge for closing on the foundation pit of high building to be onstructed
After native gravity type enclosure wall 4, by 7 position of sole plate of the soil excavation of high building position to be onstructed to high building to be formed；
Step S4, the sole plate 7 of the high building described in the high building position pouring construction to be onstructed, wherein the tower
The sole plate 7 in building extends close to 8 position of part basis bottom plate of the basement to be onstructed of the edge side of the foundation pit；
Step S5 pours diagonal brace bracket support 10 on the sole plate 7 of the high building；
Step S6, after the sole plate 7 of the high building, diagonal brace bracket support 10 pour completion and reach preset strength,
The armored concrete capping beam 2 and diagonal brace bracket support 10 are connected with steel diagonal brace 11, wherein the steel diagonal brace 11 is successively worn
It crosses between the dual spindle soil-cement gravity type enclosure wall 4, the dual spindle soil-cement gravity type enclosure wall 4 and the building enclosure 1
The soil body；
Step S7 excavates the dual spindle soil-cement gravity after to 11 inspection of quality of steel diagonal brace and applying prestressing force
After the soil body and the dual spindle soil-cement gravity type enclosure wall between formula enclosure wall and the building enclosure, the position after excavation
1 side of close building enclosure of the sole plate 8 of the basement on high building periphery described in pouring construction and the sole plate 8 in basement
Support replacement 12 is set, the construction of the basement structure during this on synchronous sole plate for carrying out the high building；
Step S8 is torn open after the sole plate of the basement on the high building periphery and the support replacement 12 reach preset strength
Except the steel diagonal brace 11, continue the structure that the basement is completed in construction.
Here, for overlarge area, flat shape is irregular, the general base pit engineering of cutting depth, using it is existing " in
The construction of heart island " bearing diagonal foundation pit supporting method, has preferable safety and economic benefit, but in the construction process, vertical oblique
Support is general longer, and the elastic compression and temperature stress of its own are affected to foundation pit deformation；Periphery slope stays native region simultaneously
Often Cutting Tap bottom of the building plate generate construction joint, make its can not primary concreting complete, it cannot be guaranteed that the globality of turret structure
And continuity, the hidden danger of percolating water is also had at gap.
Cement stirring pier gravity enclosure wall is combined to be formed by the present invention with central island bearing diagonal supporting is used for foundation pit
The combination supporting system of central island basin excavation, i.e. the dual spindle soil-cement mixing pile gravity type enclosure wall generation by adding grating of drawing squares
Subsequent construction work is carried out after set steel diagonal brace after the completion of high building bottom plate one-piece casting again for soil body slope.
Soil body slope is replaced by dual spindle soil-cement mixing pile gravity type enclosure wall, can suitably shorten the length of steel diagonal brace
Degree, reduces its influence to foundation pit deformation；Meanwhile the edge of the foundation pit is extended close to by the sole plate of the high building
The part basis bottom plate position of the basement to be onstructed of side solves the cutting of high building bottom plate caused by central island basin earthwork excavation and asks
Topic, enables the sole plate one-piece casting of high building to complete, guarantees the globality and continuity of turret structure, also the later period is avoided to apply
Other quality problems such as leak caused by work seam is dealt with improperly.
In one embodiment of construction method of combination supporting system for foundation pit central island basin excavation of the invention, construction
After the building enclosure on the periphery of foundation pit, further includes:
The soil body between the dual spindle soil-cement gravity type enclosure wall and the building enclosure is reinforced, to be protected into one
Demonstrate,prove the stability of the soil body between the dual spindle soil-cement gravity type enclosure wall and the building enclosure.
In one embodiment of construction method of combination supporting system for foundation pit central island basin excavation of the invention, by institute
Armored concrete capping beam is stated to be connected with diagonal brace bracket support with steel diagonal brace, comprising:
High notch is opened on the diagonal brace bracket support, one end of the steel diagonal brace is connected in the notch, will be described
The other end of steel diagonal brace is connect with armored concrete capping beam is stated, to guarantee the firm supporting degree of the steel diagonal brace.
It is described in one embodiment of construction method of combination supporting system for foundation pit central island basin excavation of the invention
Building enclosure includes: that SMW engineering method stake is gone along with sb. to guard him or cast-in-situ bored pile combination Soil-cement pile water stopping curtain goes along with sb. to guard him pattern.
Here, can be can be selected according to cutting depth and local environmental conditions, the stake of SMW engineering method is gone along with sb. to guard him or cast-in-situ bored pile combines
Soil-cement pile water stopping curtain goes along with sb. to guard him pattern.
It is described in one embodiment of construction method of combination supporting system for foundation pit central island basin excavation of the invention
Steel diagonal brace includes: steel pipe diagonal brace or fashioned iron diagonal brace.
Here, the steel diagonal brace can select steel pipe diagonal brace or fashioned iron diagonal brace according to engineering practice, high building region need to be to
It slots again after the completion of its sole plate one-piece casting and sets up steel diagonal brace.
In conclusion using the use of central island bearing diagonal supporting combination cement stirring pier gravity enclosure wall of the invention
In the combination supporting system progress area of plane of foundation pit central island basin excavation, big, the general foundation pit construction of cutting depth, has
Certain economy and safety.It is embodied in:
1. backing material can be saved largely, construction space is big, effectively improves unearthed efficiency, it is fast that the steel diagonal brace later period removes speed
And it can be recycled, save the duration and save construction investment；
2. diagonal brace length can be shortened suitably, reduce its influence to fender body deformation；
3. being avoided that high building bottom plate cutting caused by central island slope is excavated, guarantee the globality of turret structure and continuous
Property；
4. synchronous construction high building underground can be continued during excavating the periphery soil body, pouring construction periphery sole plate and support replacement
Cell structure can effectively improve the construction speed of high building, meet the construction period demand of owner.
The combination supporting system for foundation pit central island basin excavation can be used for that plane figure is huge, cutting depth is general
Foundation pit carry out central island basin excavation, have preferable economy and safety.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Obviously, those skilled in the art can carry out various modification and variations without departing from spirit of the invention to invention
And range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range it
Interior, then the invention is also intended to include including these modification and variations.
Claims (10)
1. a kind of combination supporting system for foundation pit central island basin excavation characterized by comprising
It is set to the building enclosure on the periphery of foundation pit；
The armored concrete capping beam being set at the top of the building enclosure；
Dual spindle soil-cement gravity type enclosure wall is set to the area of the edge side for closing on the foundation pit by high building position to be onstructed
Domain；
It is formed in the sole plate of the high building on the high building position to be onstructed after excavating the soil body, the basic bottom of the high building
Plate extends close to the part basis bottom plate position of the basement to be onstructed of the edge side of the foundation pit；
It pours in the diagonal brace bracket support on the sole plate of the high building；
Connect the steel diagonal brace of the armored concrete capping beam and diagonal brace bracket support, wherein the steel diagonal brace sequentially passes through institute
State the soil body between dual spindle soil-cement gravity type enclosure wall, the dual spindle soil-cement gravity type enclosure wall and the building enclosure.
2. being used for the combination supporting system of foundation pit central island basin excavation as described in claim 1, which is characterized in that described double
Ruggedized construction is additionally provided in the soil body between axis Cement-soil Gravity enclosure wall and the building enclosure.
3. being used for the combination supporting system of foundation pit central island basin excavation as described in claim 1, which is characterized in that also wrap
It includes:
It is set to notch on the diagonal brace bracket support, one end of the steel diagonal brace is connected in the notch.
4. being used for the combination supporting system of foundation pit central island basin excavation as described in claim 1, which is characterized in that described to enclose
Protection structure includes: that SMW engineering method stake is gone along with sb. to guard him or cast-in-situ bored pile combination Soil-cement pile water stopping curtain goes along with sb. to guard him pattern.
5. being used for the combination supporting system of foundation pit central island basin excavation as described in claim 1, which is characterized in that the steel
Diagonal brace includes: steel pipe diagonal brace or fashioned iron diagonal brace.
6. a kind of construction method of the combination supporting system for foundation pit central island basin excavation characterized by comprising
Carry out levelling of the land, the building enclosure on the periphery of construction foundation pit；
After the pre- precipitation of foundation pit, excavates armored concrete to be formed on the soil body to the building enclosure in the foundation pit and bear down on one
The bottom of beam, the armored concrete capping beam described in pouring construction in the building enclosure；
The dual spindle soil-cement gravity type for beating predetermined width is added to enclose in the region at the edge for closing on the foundation pit of high building to be onstructed
After revetment, by the sole plate position of the soil excavation of high building position to be onstructed to high building to be formed；
The sole plate of the high building described in the high building position pouring construction to be onstructed, wherein the sole plate of the high building
Extend close to the part basis bottom plate position of the basement to be onstructed of the edge side of the foundation pit；
Diagonal brace bracket support is poured on the sole plate of the high building；
After the sole plate of the high building, diagonal brace bracket support pour completion and reach preset strength, by the reinforced concrete
Soil pressure top beam is connected with diagonal brace bracket support with steel diagonal brace, wherein the steel diagonal brace sequentially passes through the dual spindle soil-cement gravity
The soil body between formula enclosure wall, the dual spindle soil-cement gravity type enclosure wall and the building enclosure；
After to the steel diagonal brace inspection of quality and applying prestressing force, excavate the dual spindle soil-cement gravity type enclosure wall with it is described
After the soil body and the dual spindle soil-cement gravity type enclosure wall between building enclosure, tower described in the position pouring construction after excavation
Support replacement is arranged in the close building enclosure side of the sole plate of the basement on building periphery and the sole plate in basement, same during this
Step carries out the construction of the basement structure on the sole plate of the high building；
After the sole plate of the basement on the high building periphery and the support replacement reach preset strength, the steel diagonal brace is removed,
Continue the structure that the basement is completed in construction.
7. the construction method for the combination supporting system of foundation pit central island basin excavation as claimed in claim 6, feature
It is, after the building enclosure on the periphery of construction foundation pit, further includes:
The soil body between the dual spindle soil-cement gravity type enclosure wall and the building enclosure is reinforced.
8. the construction method for the combination supporting system of foundation pit central island basin excavation as claimed in claim 6, feature
It is, the armored concrete capping beam is connected with diagonal brace bracket support with steel diagonal brace, comprising:
High notch is opened on the diagonal brace bracket support, one end of the steel diagonal brace is connected in the notch, and the steel is oblique
The other end of support is connect with armored concrete capping beam is stated.
9. the construction method for the combination supporting system of foundation pit central island basin excavation as claimed in claim 6, feature
It is, the building enclosure includes: that SMW engineering method stake is gone along with sb. to guard him or cast-in-situ bored pile combination Soil-cement pile water stopping curtain is gone along with sb. to guard him
Pattern.
10. the construction method for the combination supporting system of foundation pit central island basin excavation as claimed in claim 6, feature
It is, the steel diagonal brace includes: steel pipe diagonal brace or fashioned iron diagonal brace.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158602A (en) * | 2019-06-10 | 2019-08-23 | 中交第二航务工程局有限公司 | A kind of Soft Clay deep foundation pit support excavation construction structure and construction method |
| CN114059556A (en) * | 2021-12-14 | 2022-02-18 | 深圳市基础工程有限公司 | I-shaped inclined cast support supporting system of foundation pit and construction method thereof |
| CN115162426A (en) * | 2022-07-12 | 2022-10-11 | 中国二十冶集团有限公司 | Monitoring method for foundation pit enclosure deformation |
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| CN110158602A (en) * | 2019-06-10 | 2019-08-23 | 中交第二航务工程局有限公司 | A kind of Soft Clay deep foundation pit support excavation construction structure and construction method |
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| CN115162426A (en) * | 2022-07-12 | 2022-10-11 | 中国二十冶集团有限公司 | Monitoring method for foundation pit enclosure deformation |
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Application publication date: 20190521 |