CN208486271U - Foundation pit supporting construction - Google Patents
Foundation pit supporting construction Download PDFInfo
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- CN208486271U CN208486271U CN201820636840.0U CN201820636840U CN208486271U CN 208486271 U CN208486271 U CN 208486271U CN 201820636840 U CN201820636840 U CN 201820636840U CN 208486271 U CN208486271 U CN 208486271U
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Abstract
The utility model relates to technical field of civil engineering, and in particular to a kind of foundation pit supporting construction and its construction method, wherein the structure includes the steel sheet pile being oppositely arranged, and the support parts being fixed between the steel sheet pile；The support parts are splicing construction and length is adjustable.By the way that length-adjustable support parts are arranged, which automatically controls the axle power of its own, the Bit andits control of the foundation pit supporting construction, application range with higher can also be realized according to the deformation of foundation pit；In addition, the support parts of splicing construction, can be avoided welding procedure in the construction process, construction technology is simple, and stock utilization is high.
Description
Technical field
The utility model belongs to technical field of civil engineering, and in particular to a kind of foundation pit supporting construction.
Background technique
Pattern foundation pit supporting structure is in order to guarantee Underground Construction and safety of surrounding environment, to foundation pit side-wall and surrounding enviroment
Supporting and retaining system, reinforcing and the safeguard measure of use.At present frequently with supporting construction include diaphram wall, campshed, steel sheet pile, soil nailing
Wall, natural discharging slope etc..Wherein, the support forms such as diaphram wall, campshed, soil nail wall, although supporting reliability is preferable, its
After the completion of construction, still there is partial component to remain in underground, underground environment can be impacted.Although steel sheet pile has repeatable benefit
With the advantages of, but its rigidity is smaller, is not suitable in the poor pattern foundation pit supporting structure of soil property environment, and its part structure in the construction process
Part needs to weld, and will cause that steel sheet pile is improper to be scrapped, and buildings and resources is caused to waste.
Utility model content
The technical problem to be solved by the present invention is to overcome the material use of foundation pit supporting construction in the prior art
The low defect of rate.
In consideration of it, the utility model provides a kind of foundation pit supporting construction, comprising: the steel sheet pile being oppositely arranged, and it is fixed
Support parts between the steel sheet pile；
The support parts are splicing construction and length is adjustable.
Optionally, the support parts include:
First waist rail and the second waist rail are respectively and vertically fixed on two steel sheet piles, the steel sheet pile with connect
The slot position of truss rod is integrally formed, and the steel sheet pile includes bearing sheet；
Inner supporting structure, one end are fixedly connected with second waist rail；
Length control device, one end are fixedly connected with the other end of the inner supporting structure, the other end and first waist
Beam is fixedly connected, and the length of the length control device is adjustable.
Optionally, first waist rail and second waist rail are girder structure, and shape is corresponding with the bearing sheet
Setting；
The centre of second waist rail is provided with the hanging groove to match with the end of the inner supporting structure；
It is provided with ribbed stiffener in the hanging groove, for constraining the horizontal displacement of the inner supporting structure.
Optionally, the inner supporting structure, comprising:
First end is connect with the length control device；
The second end is connect with the hanging groove of second waist rail；The second end is hook structure, is tied in the hook
Concave convex texture is provided on the outside of structure；
The connecting rod both ends are arranged in connecting rod, the first end and the second end respectively；The connection
The length of bar is adjustable.
Optionally, the length control device, comprising:
Main body, driving gear set, reinforcement recycle hydraulic device, and the first end is with the second end；
The driving gear set and reinforcement circulation hydraulic device are arranged in the cavity of the main body；
Along the length direction of the main body, first end and second end are separately positioned on the main body
Two sides；
First end is connect with the hanging groove of first waist rail；
Second end is connect with the first end.
Optionally, the driving gear set includes:
Power gear；
Tooth sector, tooth mouth and the tooth mouth of the power gear match；
Drive rod, axial rotate gear, power excessive gear；
Power transmitting gear is connect with the power excessive gear；
Hydraulic loaded gear, tooth mouth and the tooth mouth of hydraulic power rack match；
Plane excessive gear；Hydraulic stem playback power gear；
Hydraulic stem playback gear, tooth mouth and the tooth mouth of the hydraulic power rack match.
Optionally, the reinforcement recycles hydraulic device, comprising:
Power piston, style one-way flow valve, hydraulic storage warehouse, hydraulic storehouse promote valve, hydraulic valve restoring spring, hydraulic packing
Valve, hydraulic power storehouse, hydraulically powered piston, hydraulic return line and hydraulic cutout valve.
Optionally, first end includes panel, and the panel is connect with the hydraulically powered piston, the panel table
Face is provided with several bolts hole.
It optionally, further include central control system and emergency system；
The central control system, for the control support parts；
The emergency system for the working condition to the monitoring support parts, and feeds back to the central control system.
Technical solutions of the utility model have the advantages that
1. by the way that length-adjustable support parts are arranged in the utility model, enable the support parts automatically to its own
Axle power is controlled, and can also realize the Bit andits control of the foundation pit supporting construction, application with higher according to the deformation of foundation pit
Range；In addition, the support parts of splicing construction, can be avoided welding procedure in the construction process, construction technology is simple, material benefit
With rate height.
2. being provided with central control system and emergency system in the utility model, wherein central control system realization pair
The control of support parts length, emergency system are used to feed back the operating statuses of the support parts, can with guarantee the foundation pit supporting construction
By property.
3. construction method provided by the utility model, in the construction process without any welding procedure, it is only necessary to carry out it is assembled and
Parameter input can deformation to entire foundation pit, stress size control, have constructing operation simple, speed of application is fast, branch
Shield rigidity is big, and supporting resistance to capsizing is strong and reliability is higher.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a sectional view specifically illustrated of foundation pit supporting construction in the utility model embodiment；
Fig. 2 is a structure chart specifically illustrated of the utility model embodiment Steel Sheet Pile；
Fig. 3 is a structure chart specifically illustrated of waist rail in the utility model embodiment；
Fig. 4 is a structure chart specifically illustrated of inner supporting structure in the utility model embodiment；
Fig. 5 is a structure chart specifically illustrated of first end in the utility model embodiment；
Fig. 6 is a structure chart specifically illustrated of length control device in the utility model embodiment；
Fig. 7 is a structure chart specifically illustrated of driving gear set in the utility model embodiment；
Fig. 8 is a perspective view specifically illustrated of driving gear set in the utility model embodiment；
Fig. 9 is a structure chart specifically illustrated of hydraulic force increasing device in the utility model embodiment；
Figure 10 is a structure chart specifically illustrated of the first end in the utility model embodiment；
Appended drawing reference: 10- steel sheet pile；20- support parts；The first waist rail of 21-；211- bearing sheet；212- ribbed stiffener；22-
Two waist rails；23- inner supporting structure；231- first end；232- the second end；233- connecting rod；24- length control device；
241- main body；242- driving gear set；24210- power gear；24211- tooth sector；24212- drive rod；24213- is axial
Rotate gear；24214- power excessive gear；24215- power transmitting gear；24216- hydraulic loaded gear；24217- is hydraulic
Power gear bar；24218- plane excessive gear；24219- hydraulic stem playback power gear；24220- hydraulic stem playback gear；
24221- central axis；243- reinforcement recycles hydraulic device；24310- power piston；24311- style one-way flow valve；24312- is hydraulic
Storage warehouse；The hydraulic storehouse 24313- promotes valve；24314- hydraulic valve restoring spring；24315- hydraulic packing valve；24316- is hydraulic dynamic
Power storehouse；24317- hydraulically powered piston；24318- hydraulic return line；The hydraulic cutout valve of 24319-；The first end 244-；245-
Two ends；30- central control system；40- emergency system.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be noted that term " first ", " second ", " third " are only used for describing
Purpose is not understood to indicate or imply relative importance.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
The present embodiment provides a kind of foundation pit supporting constructions, as shown in Figure 1, including the steel sheet pile 10, Yi Jigu being oppositely arranged
The support parts 20 being scheduled between steel sheet pile 10.Wherein, support parts 20 are splicing construction and length is adjustable.
By the way that length-adjustable support parts 20 are arranged in the utility model embodiment, enable the support parts 20 automatic right
The axle power of its own is controlled, and can also realize the Bit andits control of the foundation pit supporting construction according to the deformation of foundation pit, have compared with
High application range；In addition, the support parts 20 of splicing construction, can be avoided welding procedure in the construction process, construction technology
Simply, stock utilization is high.
As shown in Figure 1 and Figure 2, the slot position of steel sheet pile 10 and truss frame for connecting bar is integrally formed, and waist can be installed by having
The bearing sheet 211 of beam.Wherein, support parts 20 include the first waist rail 21 and second being respectively and vertically fixed on two steel sheet piles 10
Waist rail 22；Inner supporting structure 23, one end are fixedly connected with the second waist rail 22, and one end of the other end and length control device 24 is fixed
Connection；The other end of length control device 24 is fixedly connected with the first waist rail 21.
Wherein, as shown in figure 3, the first waist rail 21 and the second waist rail 22 are girder structure, shape size and bearing sheet
Spacing between 211 is adapted.For example, the first waist rail 21 and the second waist rail 22 can be H profile steel, box steel and channel steel etc.
Other girder structures of lateral rigidity can be provided.The centre of second waist rail 22 is provided with the end phase with inner supporting structure 23
The ribbed stiffener 212 of bound level displacement can be set in matched hanging groove in hanging groove.
As shown in figure 4, inner supporting structure 23 includes: the first end 231 connecting with length control device 24, with the second waist
The second end 232 of the hanging groove connection of beam 22, and the connecting rod for connecting first end 231 and the second end 232
233.Wherein, the second end 232 is hook structure, and concave convex texture is provided on the outside of hook structure, can be embedded in ribbed stiffener,
To limit its horizontal displacement.Wherein, the length of connecting rod 233 is adjustable.The second end of first end 231 and length control device 24
First 245 connection, connection type can be the form of repeatable connection such as to be bolted.As shown in figure 5, first end 231
Surface has certain regularity of distribution bolt hole.
As shown in fig. 6, length control device 24, including main body 241, driving gear set 242, reinforcement recycle hydraulic device
243, the first end 244 and the second end 245.Driving gear set 242 and reinforcement circulation hydraulic device 243 are arranged in main body
In 241 cavity.On the length direction along main body 241, the first end 244 and the second end 245 are separately positioned on main body
241 two sides.Wherein, the first end 244 is connect with the hanging groove of the first waist rail 21.
As shown in fig. 7, driving gear set 242, including power gear 24210；Tooth sector 24211, has and power teeth
The adaptable tooth mouth of wheel 24210, to realize the adjustment in bending moment force direction；Drive rod 24212；Axial rotate gear 24213；Power
Excessive gear 24214；Power transmitting gear 24215 is reliably connected with power excessive gear 24214；Hydraulic loaded gear
24216, it is adapted with the tooth mouth of hydraulic power rack 24217, and playback the effective work area phase of gear 24220 with hydraulic stem
It adapts to；Plane excessive gear 24218；Hydraulic stem playback power gear 24219；Hydraulic stem playback gear 24220 should be moved with hydraulic
The tooth mouth of powershift gear bar 24217 is adapted, and is adapted with the effective work area of hydraulic power rack 24217；Hydraulic power
Rack 24217, the internal device with limit levels displacement, to guarantee only do unidirectional reciprocating motion.The driving cog
Wheel group 242 includes but are not limited to said gear group combining form, further include it is any can convert torque to can make it is hydraulic
The gear set combining form of 24217 axially reciprocating of power gear bar.Wherein, power excessive gear 24214, hydraulic loaded tooth
Wheel 24216, hydraulic power rack 24217, the central axis of plane excessive gear 24218 and hydraulic stem playback gear 24220
24221 are overlapped.In addition, as shown in fig. 7, the bar-shaped frame inside hydraulic power rack 24217 is limiting device, for power
Piston 24310 is limited.Wherein, Fig. 8 shows the perspective view of driving gear set 242.
As shown in figure 9, reinforcement recycles hydraulic device 243, including power piston 24310；Style one-way flow valve 24311, including
All valve members that can make liquid one-way flowing；Hydraulic storage warehouse 24312；Hydraulic storehouse promotes valve 24313, guarantees liquid flow
Hydraulic holding bay pressure balance after out；Hydraulic valve restoring spring 24314, including all elastic component；Hydraulic packing valve 24315,
Including all valve members that can make liquid one-way flowing；Hydraulic power storehouse 24316, to store highly pressurised liquid；It is hydraulic dynamic
Power piston 24317 can provide hydraulic coupling；Hydraulic return line 24318 can bear the pipeline of high pressure including all；It is hydraulic disconnected
Road valve 24319, can the on-off to hydraulic return line 24318 carry out control and fluid pressure feed back.
As shown in Figure 10, the first end 244 includes panel, which connect with hydraulically powered piston 24217, panel surface
Bolt hole with certain regularity of distribution；The end that second end 245 is connected with the hanging groove of the first waist rail 21 has hook
Form, and have indent and convex lines on the outside of hook, it can be embedded in ribbed stiffener, to limit its horizontal displacement.
As shown in fig. 6, the foundation pit support device have with length control device be adapted central control system 30 and
In emergency circumstances implement the emergency system 40 of emergency braking to length control device 24.Wherein, central control system 30 includes control
System, power-supply system and dynamical system processed.The feature of central control system 30 is that control system can lead to according to design requirement
The stress and strain for crossing 242 pairs of axial directions of driving gear set controls, and is shown in a manner of LCD screen；Power-supply system has
Double circuit, to guarantee that device can still be run in power supply replacement process；Dynamical system has the function of that twisting resistance can be provided,
Drive drive rod.The emergency system 40 of emergency braking has working condition feedback instrument, and is reliably connected with the second end 245,
It is any including acceleration transducer etc. to occur the abnormal instrument fed back to the second end 245；With to center control
The instrument that device working condition is fed back, including power supply feedback, central processing unit operate normally feedback etc..By feedback, with reality
Existing device is automatically locked in abnormal cases, guarantees the stability of the foundation pit supporting construction.
The utility model embodiment additionally provides a kind of construction method of foundation pit supporting construction, includes the following steps:
S1 is designed supporting main structure according to geological exploration data；
S2 first squeezes into steel sheet pile 10, after squeeze into truss frame for connecting bar, complete the splicing of steel sheet pile 10；
S3 is excavated to first layer support setting depth, completes waist rail, inner supporting structure 23, central control system 30, emergency
The installation of system 40 and the length control device with reinforcement function；
S4 inputs corresponding parameter according to design requirement in central control system and emergency system 40；
S5 repeats the above steps, until being excavated to hole bottom.
As a kind of specific embodiment of the present embodiment, specifically include:
1) soil parameters provided according to geology prospecting report consider the influence of many factors such as precipitation in conjunction with foundation depth,
Determine the parameter of steel sheet pile 10, support wale, inner supporting structure 23 and the length control device 24 with reinforcement function.Embodiment
In, 242 power gear of driving gear set, 24210 tooth number Z1=20, modulus m1=2.5,24211 tooth number Z of tooth sector2=60, mould
Number m2=2.5, transmission ratio i1=3；Axial 24213 tooth number Z of rotate gear1=2, modulus m1=3,24214 tooth of power excessive gear
Number Z2=100, modulus m2=3, transmission ratio i2=50；Power transmitting gear 24215, plane excessive gear 24218 and hydraulic stem are returned
Position 24219 tooth number Z of power gear is 32, and modulus m is 7；24218 tooth number Z=32 of hydraulic power rack, modulus m=4；
Hydraulic loaded gear 24216, hydraulic stem playback 24220 tooth number Z of gear are 96 (taking 32 teeth), and modulus m is 4.Transmission ratio i12
=i1xi2=150.The torque that center can export is assumed to be 8Nm, then power excessive gear 24214 obtains torque T2=8 ×
150=1200Nm is transmitted to hydraulic stem playback gear 24220 and obtains torque T2, the acquisition axial force of hydraulic power rack 2421724310 diameter d of power piston is 60mm, and 24317 diameter D of hydraulically powered piston is
480mm, the axial force F that the second end 245 generates245It is obtained according to pascal's principle
F245The size of power can be determined according to design requirement.
2) before steel sheet pile construction, it is inserted into corresponding sealing strip in corresponding truss rod slot position, prevents from squeezing into process
The middle soil body is filled in；The steel sheet pile 10 with bearing sheet is squeezed into according to design requirement；Sealing strip is extracted, is squeezed into along slot position corresponding
Truss rod completes steel sheet pile 10 and constructs；
3) it is excavated to first layer support setting position, waist rail is placed in support platform, H profile steel waist rail is installed；Wherein H-type
Transverse stiffener should be arranged in part of the steel in support platform, and its interval should meet certain modulus；Both reinforcement work can have been played
With, and can be used as the card slot with supporting base end portion or length control device；
4) length control device 24 is supported with H profile steel and is connect by general-purpose end, blending bolt is fixed；It is then hung up branch
It backs up the corresponding position of beam, completes preliminary installation；
5) corresponding axle power control range, starter are inputted in central control system 30；Length with reinforcement function
Degree control device length is continuously increased, until generating corresponding axle power；The range that steel sheet pile 10 is strengthened in two sides is continuously increased, and first
Layer pattern foundation pit supporting structure is completed；
6) be excavated to the second layer support bottom, repeat step 3,4,5, complete the second layer support setting；It repeats the above steps,
Until being excavated to hole bottom；
7) during pattern foundation pit supporting structure, the power supply in central control system should be regularly replaced, to guarantee device
Reliability service；
8) during pattern foundation pit supporting structure, it is assumed that biggish change in displacement occurs for support, and emergency system can start at once, and will
The length limit of length control device 24 is dead, and gives a warning, to guarantee the safety of foundation pit construction.
First purpose of the utility model is to provide a kind of quick foundation pit supporting construction of spliced intelligent control；This is practical new
Second purpose of type is to provide the construction method that the supporting construction carries out pattern foundation pit supporting structure.This method can quickly prop up foundation pit
Shield, the reliable deformation and soil pressure controlled on the outside of foundation pit, and recycling rate of waterused with higher, are especially suitable for strip foundation pit
Construction.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (8)
1. a kind of foundation pit supporting construction characterized by comprising the steel sheet pile (10) being oppositely arranged, and it is fixed on the steel
Support parts (20) between sheet pile (10)；
The support parts (20) are splicing construction and length is adjustable；
Wherein, the support parts (20) include:
First waist rail (21) and the second waist rail (22) are respectively and vertically fixed on two steel sheet piles (10), the steel plate
The slot position of stake (10) and truss frame for connecting bar is integrally formed, and the steel sheet pile (10) includes bearing sheet (211)；
Inner supporting structure (23), one end are fixedly connected with second waist rail (22)；
Length control device (24), one end are fixedly connected with the other end of the inner supporting structure (23), the other end and described the
One waist rail (21) is fixedly connected, and the length of the length control device (24) is adjustable.
2. foundation pit supporting construction according to claim 1, which is characterized in that first waist rail (21) and described second
Waist rail (22) is girder structure, and shape is correspondingly arranged with the bearing sheet (211)；
The centre of second waist rail (22) is provided with the hanging groove to match with the end of the inner supporting structure (23)；
Ribbed stiffener (212) are provided in the hanging groove, for constraining the horizontal displacement of the inner supporting structure (23).
3. foundation pit supporting construction according to claim 1, which is characterized in that the inner supporting structure (23), comprising:
First end (231) is connect with the length control device (24)；
The second end (232) is connect with the hanging groove of second waist rail (22)；The second end (232) is hook structure,
Concave convex texture is provided on the outside of the hook structure；
Connecting rod (233), the first end (231) and the second end (232) are separately positioned on the connecting rod
(233) both ends；The length of the connecting rod (233) is adjustable.
4. foundation pit supporting construction according to claim 3, which is characterized in that the length control device (24), comprising:
Main body (241), driving gear set (242), reinforcement recycle hydraulic device (243), and the first end (244) are with the second end
(245)；
The cavity in the main body (241) is arranged in the driving gear set (242) and reinforcement circulation hydraulic device (243)
It is interior；
Along the length direction of the main body (241), first end (244) and second end (245) are set respectively
Set the two sides in the main body (241)；
First end (244) connect with the hanging groove of first waist rail (21)；
Second end (245) connect with the first end (231).
5. foundation pit supporting construction according to claim 4, which is characterized in that the driving gear set (242) includes:
Power gear (24210)；
Tooth sector (24211), tooth mouth and the tooth mouth of the power gear (24210) match；
Drive rod (24212), axial rotate gear (24213), power excessive gear (24214)；
Power transmitting gear (24215) is connect with the power excessive gear (24214)；
Hydraulic loaded gear (24216), tooth mouth and the tooth mouth of hydraulic power rack (24217) match；
Plane excessive gear (24218)；Hydraulic stem playbacks power gear (24219)；
Hydraulic stem playbacks gear (24220), and tooth mouth and the tooth mouth of the hydraulic power rack (24217) match.
6. foundation pit supporting construction according to claim 4, which is characterized in that the reinforcement recycles hydraulic device (243), packet
It includes:
Power piston (24310), style one-way flow valve (24311), hydraulic storage warehouse (24312), hydraulic storehouse promote valve (24313),
Hydraulic valve restoring spring (24314), hydraulic packing valve (24315), hydraulic power storehouse (24316), hydraulically powered piston
(24317), hydraulic return line (24318) and hydraulic cutout valve (24319).
7. foundation pit supporting construction according to claim 6, which is characterized in that first end (244) includes panel, institute
It states panel to connect with the hydraulically powered piston (24317), the panel surface is provided with several bolts hole.
8. foundation pit supporting construction according to claim 1, which is characterized in that further include central control system (30) and answer
Anxious system (40)；
The central control system (30), for the control support parts (20)；
The emergency system (40) for the working condition to the monitoring support parts (20), and feeds back to the center control
System (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820636840.0U CN208486271U (en) | 2018-05-02 | 2018-05-02 | Foundation pit supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820636840.0U CN208486271U (en) | 2018-05-02 | 2018-05-02 | Foundation pit supporting construction |
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| Publication Number | Publication Date |
|---|---|
| CN208486271U true CN208486271U (en) | 2019-02-12 |
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ID=65252905
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820636840.0U Expired - Fee Related CN208486271U (en) | 2018-05-02 | 2018-05-02 | Foundation pit supporting construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108385695A (en) * | 2018-05-02 | 2018-08-10 | 张家港江苏科技大学产业技术研究院 | Foundation pit supporting construction and its construction method |
| CN110258580A (en) * | 2019-06-17 | 2019-09-20 | 中铁上海设计院集团有限公司 | A kind of construction method of the foundation pit enclosure structure as permanent underground structure |
| CN113049381A (en) * | 2021-03-11 | 2021-06-29 | 深圳市勘察研究院有限公司 | Foundation pit support simulation test device and system |
-
2018
- 2018-05-02 CN CN201820636840.0U patent/CN208486271U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108385695A (en) * | 2018-05-02 | 2018-08-10 | 张家港江苏科技大学产业技术研究院 | Foundation pit supporting construction and its construction method |
| CN110258580A (en) * | 2019-06-17 | 2019-09-20 | 中铁上海设计院集团有限公司 | A kind of construction method of the foundation pit enclosure structure as permanent underground structure |
| CN113049381A (en) * | 2021-03-11 | 2021-06-29 | 深圳市勘察研究院有限公司 | Foundation pit support simulation test device and system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |