CN110359466A - Mechanical self-latching type hydraulic servo end construction and its construction method - Google Patents
Mechanical self-latching type hydraulic servo end construction and its construction method Download PDFInfo
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- CN110359466A CN110359466A CN201910610068.4A CN201910610068A CN110359466A CN 110359466 A CN110359466 A CN 110359466A CN 201910610068 A CN201910610068 A CN 201910610068A CN 110359466 A CN110359466 A CN 110359466A
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- bracing members
- hydraulic servo
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- 238000010276 construction Methods 0.000 title claims abstract description 57
- 230000001105 regulatory effect Effects 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 238000013461 design Methods 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
Include: the first loading structure the present invention relates to a kind of mechanical self-latching type hydraulic servo end construction and its construction method, the construction, is fastenedly connected with corresponding bracing members end；The second loading structure being oppositely arranged with the first loading structure, is fixedly connected with foundation pit inner wall；It is vertically connected at the jack of the second loading structure, the piston rod of jack stays on the first loading structure, shores power by adjusting jack to apply precompression to bracing members；And support is connected between the first loading structure and the second loading structure and the adjustable adjusting component of bearing length, adjust component after regulating bearing length its bearing length of lockable to stay between the first loading structure and the second loading structure.The present invention provides double shield for bracing members, improves steel supporting system safety, and servo end may be implemented and jack works independently, and can effectively avoid causing foundation pit side-wall generation continuity unstability to be collapsed because jack prestressing force suddenly disappears.
Description
Technical field
The present invention relates to foundation pit construction engineering fields, refer in particular to a kind of mechanical self-latching type hydraulic servo end construction and its construction
Method.
Background technique
With the fast development in city, skyscraper is more and more and the body height the next high, and foundation pit is deeper and deeper, periphery
Construction environment becomes increasingly complex, and deep pit monitor degree of protection is higher and higher, and supporting difficulty is increasing.
At this stage, base pit engineering often with support technology specifically include that Gravity Retaining Wall, composite soil nailing wall, cantilevered campshed,
Pile-anchor retaining, concrete support stake supporting, bracing members stake supporting etc..Wherein, the core technology of bracing members stake supporting is mainly assembled
Formula steel supporting system.The support system has from heavy and light, easy for assemble or unload, reusable, effective control foundation pit deformation etc.
Feature is widely used in Deep Foundation Pit Supporting Project.
During practical engineering application, since ambient temperature variation, the foundation pit side-wall soil body such as are crept at the factors, steel branch
Stress loss can be generated at any time by supportting internal axle power, seriously may result in foundation pit and the safe thing that continuity unstability collapses occurs
Therefore.Currently, most simple and effective way is effectively to solve stress loss using supporting base end portion axle power hydraulic servo compensation technique to ask
Topic.Axle power hydraulic servo compensation technique is exactly to apply pre- last item to bracing members in bracing members end setting hydraulic servo jack
Power, while axle power real-time monitoring system and foundation pit deformation real-time monitoring system are set in end, it is adjusted in real time according to monitoring data
Support pre- suppressive jamming.Currently, common servo end is to be ensured inside bracing members in real time by Hydrauservo System by pumping source
Axis pressure, if the reasons such as power-off, oil sources and jack device failure, servo-system failure and artificial maloperation, pole occur for scene
It is easier that servo end surprisingly unloads, more serious deep pit monitor accident is caused.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of mechanical self-latching type hydraulic servo end construction is provided
And its construction method, it solves existing Hydrauservo System and unexpected unload easily occurs and causes more serious deep pit monitor accident
Problem.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of mechanical self-latching type hydraulic servo end construction, support is connected to foundation pit inner wall and bracing members
Between end；Mechanical self-latching type hydraulic servo end constructs
First loading structure, have opposite the first mounting surface and the second mounting surface, first mounting surface with it is corresponding
Bracing members end is fastenedly connected；
The second loading structure being oppositely arranged with first loading structure, second loading structure and foundation pit inner wall are solid
Fixed connection；
It is vertically connected at the jack of second loading structure, the piston rod of the jack stays on second peace
On dress face, power is shored to apply precompression to the bracing members by the adjusting jack；And
Support is connected between second mounting surface and second loading structure and the adjustable adjusting of bearing length
Component, the bearing length for adjusting component with the flexible of the jack and automatic adjusument, the adjusting component are being adjusted
Its bearing length of lockable is after having saved bearing length to stay between first loading structure and second loading structure.
Mechanical self-latching type hydraulic servo end of the invention is configured to bracing members and provides double shield, improves bracing members
Security of system, may be implemented servo end and jack works independently, and when jack is because of accidental cause damage or decompression, adjust
Section component shores bracing members, and effectively avoid causes foundation pit side-wall that continuity occurs because jack prestressing force suddenly disappears
Unstability is collapsed.
Mechanical self-latching type hydraulic servo of the present invention end construction further improvement lies in that, it is corresponding on second mounting surface
The end of the piston rod is installed with pressure sensor, shores power by what the pressure sensor detected the jack.
Mechanical self-latching type hydraulic servo of the present invention end construction further improvement lies in that, pacify on second loading structure
Equipped with the displacement sensor for detecting distance between second loading structure and second mounting surface.
Mechanical self-latching type hydraulic servo of the present invention end construction further improvement lies in that, the adjustings component include vertically
The locking piece for being connected to the regulating part of second mounting surface and being matched with the regulating part；
The other end of the regulating part, which passes through from the top of second loading structure and has part to be located at described second, to be added
Carry the inside of structure；
The locking piece is connected to the regulating part and is resisted against second loading structure, to lock the regulating part
Bearing length.
Mechanical self-latching type hydraulic servo of the present invention end construction further improvement lies in that,
The regulating part is screw rod, and described screw rod one end is perpendicularly fixed at second mounting surface, and the other end is from described the
The inside that the top of two loading structures passes through and has part to be located at second loading structure；
The locking piece is the lock nut for being screwed together in the screw rod, and the lock nut is located at second loading structure
Between second mounting surface, by screwing the lock nut so that the lock nut is resisted against second load and ties
The top surface of structure, to realize the bearing length for locking the regulating part.
Mechanical self-latching type hydraulic servo of the present invention end construction further improvement lies in that, the adjustings component include vertically
The screw thread locking bar for being connected to the connection sleeve of second mounting surface and being inserted into the connection sleeve, the end of the screw thread locking bar
Portion is fixedly connected on second loading structure；
It is screwed with fastening nut on the screw thread locking bar, is resisted against the connection sleeve by screwing the fastening nut
End locks the bearing length of the screw thread locking bar in turn.
The present invention also provides a kind of construction methods of mechanical self-latching type hydraulic servo end construction, include the following steps:
First loading structure is fastenedly connected with bracing members one end；
Bracing members branch is set to the inside of foundation pit, and by the second loading structure and foundation pit of the bracing members end
Inner wall is fixedly connected, and described bracing members the other end is fixedly connected with corresponding foundation pit inner wall；
The jack is adjusted so that the piston rod of the jack stays on second mounting surface, and adjusts institute
That states jack shores power to apply precompression to the bracing members, and institute is kept when the precompression applied reaches design requirement
That states jack shores power；
In the jack telescopic adjustment, bearing length of the bearing length for adjusting component according to the jack
Automatic adjusument is carried out, when power is shored in jack holding, locks the bearing length for adjusting component so that it is shored
Between second mounting surface and second loading structure.
Construction method of the invention further improvement lies in that, further includes:
One pressure sensor is provided, by the pressure sensor be fixedly arranged on second mounting surface and with the piston rod
It is corresponding, power is shored by what the pressure sensor detected the jack.
Construction method of the invention further improvement lies in that, further includes: provide a displacement sensor, by the displacement biography
Sensor is installed on second loading structure, detects second loading structure and described second by institute's displacement sensors
The distance between mounting surface.
Construction method of the invention further improvement lies in that, the adjusting component include be vertically connected at it is described second peace
The regulating part in dress face and the locking piece matched with the regulating part；After power is shored in jack holding, the locking is adjusted
Part is resisted against second loading structure, to lock the bearing length of the regulating part.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of mechanical self-latching type hydraulic servo of the present invention end construction.
Fig. 2 is the side view of structure shown in Fig. 1.
Fig. 3 is the structural schematic diagram of the second embodiment of mechanical self-latching type hydraulic servo of the present invention end construction.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to fig. 1, the present invention provides a kind of mechanical self-latching type hydraulic servo end construction and its construction method, it is used for base
On the bracing members in hole, double shield is provided for bracing members, improves the safety of bracing members, servo end and thousand may be implemented
Jin top independently works, and when jack is because of accidental cause damage or decompression, effectively avoids because bracing members precompression is unexpected
It disappears, and causes foundation pit side-wall that the problem of continuity unstability is collapsed occurs.Servo end of the invention is equipped with loading structure, so that
Forced area increase and uniformly, avoid occur punching shear failure, substantially increase security performance.With reference to the accompanying drawing to machine of the present invention
Tool self-locking type hydraulic server-side head structure and its construction method are illustrated.
Refering to fig. 1, it is shown that the structural representation of the first embodiment of mechanical self-latching type hydraulic servo of the present invention end construction
Figure.Referring to Fig.2, showing the side view of structure shown in Fig. 1.It is hydraulic to mechanical self-latching type of the present invention below with reference to Fig. 1 and Fig. 2
Server-side head structure is illustrated.
As depicted in figs. 1 and 2, mechanical self-latching type hydraulic servo end of the invention construction, support are connected to foundation pit inner wall
Between 10 end of bracing members, mechanical self-latching type hydraulic servo end construction includes the first loading structure 21, second load knot
Structure 22, jack 23 and adjusting component 24, the first loading structure 21 have opposite the first mounting surface 2111 and the second installation
Face 2121, the first mounting surface 2111 are fastenedly connected with the end of corresponding bracing members 10；Second loading structure 22 and the first load
Structure 21 is oppositely arranged, which is fixedly connected with foundation pit inner wall；Jack 23 is vertically connected on the second load
In structure 22, which is set to the second loading structure 22 on the surface of the first loading structure 21, the jack 23
Piston rod 231 stays on the second mounting surface 2121, shores power by adjusting jack 23 to apply precompressed to bracing members 10
Power；It adjusts the support of component 24 to be connected between the second mounting surface 2121 and the second loading structure 22, the support of the adjusting component 24
Length is adjustable, adjusts the adaptivity adjusting with the telescopic adjustment of jack 23 of the bearing length of component 24, adjusts component 24
After regulating bearing length, its bearing length of lockable with stay on the first loading structure 21 and the second loading structure 22 it
Between.
Thus its structure for arriving supporting role there are two between the first loading structure 21 and the second loading structure 22, one
Jack 23, the other is adjust component 24, jack 23 apply setting shore power after keep this to shore power, adjusting group
Part 24 is mechanical support construction, is supported between the first loading structure 21 and the second loading structure 22, jack 23 and adjusting
Component 24 provides dual safety guarantee for mechanical self-latching type hydraulic servo end construction, it can be ensured that bracing members remain stable pre-
Pressure, and then ensure that the supporting safety of foundation pit and the stability of foundation pit.
In a specific embodiment, the end that piston rod 231 is corresponded on the second mounting surface 2121 is installed with pressure biography
Sensor 25 shores power using the detection jack 23 of pressure sensor 25.
The axle power of 25 real-tune TT & C bracing members of pressure sensor changes, and can grasp excavation slope in time based on axle power variation
Change trend, it is ensured that the stability of excavation slope.
In a specific embodiment, it is equipped on the second loading structure 22 for detecting the second loading structure 22 and second
The displacement sensor 26 of the distance between mounting surface 2121.Axial displacement of the displacement sensor 26 for real-tune TT & C bracing members becomes
Change, based on the axle power variation that axis shift variation and pressure sensor 25 detect, timely grasp the variation trend of excavation slope,
Ensure the stability of excavation slope.
In a specific embodiment, it adjusts there are two components 24, set on the two sides of jack 23.
In the first embodiment, adjust component 24 include be vertically connected at the second mounting surface 2121 regulating part 241 and with
The other end of the locking piece 242 that regulating part 241 matches, regulating part 241 passes through from the top of the second loading structure 22 and has portion
Quartile is located at the second loading structure 22 and the second mounting surface in the inside of the second loading structure 22, by adjusting the regulating part 241
Length between 2121 adjusts the bearing length of component 24 to adjust, and regulating part 241 is located at the second loading structure 22 and second
Length automatic adjusument with the jacking variation of jack 23 between mounting surface 2121；Locking piece 242 is connected to regulating part
241 and it is resisted against the second loading structure 22, locking piece 242 passes through locking piece 242 after regulating part 241 regulates bearing length
It is resisted against the second loading structure 22 and the bearing length namely 242 lock adjustment part 241 of locking piece of lock adjustment part 241 are located at
Length between second loading structure 22 and the second mounting surface 2121, and the first loading structure is stayed on together with regulating part 241
21 and second between loading structure 22.
When in use, first adjust jack 23 shores power, after jack 23 regulates, recycles locking piece 242 that will adjust
Length locking of the part 241 between the second loading structure 22 and the second mounting surface 2121 is saved, so that locking piece 242 and regulating part
241 are formed together mechanical support construction, it is ensured that the precompression of bracing members provides safety guarantee for bracing members.
In a specific embodiment, regulating part 241 is screw rod, and one end of screw rod is perpendicularly fixed at the second mounting surface
2121, the inside that the other end passes through from the top of the second loading structure 22 and has part to be located at the second loading structure 22；Locking piece
242 be the lock nut for being screwed together in screw rod, and lock nut is between the second loading structure 22 and the second mounting surface 2121, initially
When, there is the spacing of any between lock nut and the top surface of the second loading structure 22, so that screw rod carries out automatic adjusument, so that
Screw rod can automatically adjust its bearing length with the jacking of jack, when jack is in pressure maintaining holding state, screw lock
Nut is determined so that lock nut is resisted against the top surface of the second loading structure 22, to lock the bearing length of screw rod.Preferably,
There are two lock nuts, is screwed together on screw rod, in locking, by two lock nut spiral shells to being resisted against the second loading structure 22
Top surface and locking, be subjected to displacement to avoid screw rod.
In another embodiment specific implementation mode, regulating part 241 is strut, and one end of strut is perpendicularly fixed at the second mounting surface
2121, the other end passes through from the top of the second loading structure 22 and has part on the inside of the second loading structure 22, strut
Offer spaced pin hole along its length；Locking piece 242 is bolt compatible with pin hole, and bolt is slidably
Ground is set to the top surface of the second loading structure 22, is inserted into corresponding pin hole by bolt to realize that bolt is shored together with strut
Between the first loading structure 21 and the second loading structure 22.After jack 23 regulates and shores power, bolt is inserted in pair
With locking strut in the pin hole answered, to support the first loading structure, and then bracing members are supported.
In the first embodiment, the second loading structure 22 includes the first connecting plate 221, the second connecting plate 222 and puts more energy into
Plate 223, the first connecting plate 221 and the second connecting plate 222 are oppositely arranged, table of first connecting plate 221 far from the second connecting plate 222
Face, which is formed, is fixedly connected with the first stationary plane with foundation pit inner wall, and the second connecting plate 222 forms peace far from the surface of the first connecting plate 221
The second stationary plane for filling jack 23 is offered on the second connecting plate 222 and is passed through for what the regulating part 241 for adjusting component 24 passed through
Perforation.Stiffener 223 is vertically connected between the first connecting plate 221 and the second connecting plate 222, and stiffener 223 and first connects
It is empty that fishplate bar 221 and the second connecting plate 222 are enclosed the accommodating for passing through 222 part of the second connecting plate for accommodating regulating part 241
Between, the length of the accommodating space is greater than the length that regulating part 241 passes through the part of the second connecting plate 222, so that the regulating part
241 bearing length has certain adjustable range.
In a second embodiment, as shown in figure 3, adjusting component 24 includes the connection for being vertically connected at the second mounting surface 2121
Screw thread locking bar 244 in sleeve 243 and insertion connection sleeve 243, the end of screw thread locking bar 244 is fixedly connected on the second load knot
Structure 22；Fastening nut 245 is screwed on screw thread locking bar 244；
When jack 23 is jacked and adjusted, screw thread locking bar 244 is by protruding into connection sleeve 243 or out of connection sleeve 243
It stretches out and carries out its length for exposing the part outside connection sleeve 243 of automatic adjusument, after regulating length, by screwing fastening
Nut 245 is resisted against the end of connection sleeve 243 and then has limited the bearing length for adjusting component 24.
When initial, fastening nut 245 has certain spacing with the end for connecting sleeve 243 so that screw thread locking bar 244 can
It adjusts the length protruded into connection sleeve 243 and screws fastening nut 245 so that its company of being resisted against after jack 23 regulates
The end of female connector cylinder 243, so that the length of screw thread locking bar 244 is non-adjustable, so that the support for securing adjusting component 24 is long
Degree.Preferably, there are two fastening nuts 245.
In a second embodiment, the second loading structure 22 is a fixed plate 224, which has opposite bottom surface
And top surface, wherein bottom surface is fixedly connected with foundation pit inner wall, and fixed jack 23, and the end of locking screw 244 are installed in top surface
It is fixed on the top surface of fixed plate 244.
In a specific embodiment, as shown in Figure 1 to Figure 3, the first loading structure 21 include the first load plate 211,
Second load plate 212 and multiple ribbed panels 213；
First load plate 211 is oppositely arranged with the second load plate 212, and the surface of the first load plate 211 forms the first installation
The surface in face 2111, the second load plate 212 forms the second mounting surface 2121；
Ribbed panel 213 is vertically connected between the first load plate 211 and the second load plate 212, and multiple ribbed panels 213 are right
Answer at the piston rod 231 of jack 23 and the center of effort of regulating part 241.
Ribbed panel 213 is placed at the center of effort of piston rod and regulating part 241, load position can be prevented because of local pressure
It is excessive and generate local buckling destruction.
Preferably, the first load plate, the second load plate and a ribbed panel are linked to be I-steel, remaining ribbed panel is vertical at
The two sides of ribbed panel as I-steel web, and be fixedly connected with the first load plate and the second load plate.
Again goodly, the diameter of regulating part in component, screw thread locking bar is adjusted using 120mm to 180mm diameter, jack
For tonnage using 300T between 600T, the diameter of the through hole opened up on the second loading structure is 10mm bigger than the diameter of regulating part
To 15mm, to ensure that regulating part can freely move adjusting.
The use process of mechanical self-latching type hydraulic servo end construction of the invention is illustrated.
When pattern foundation pit supporting structure, mechanical self-latching type hydraulic servo end of the invention is connected in the end of bracing members and is constructed, by the
First load plate of one loading structure 21 and the end of bracing members are fastenedly connected by high-strength bolt, and the second loading structure is fixed
On the side bar of foundation pit inner wall, after bracing members system is set up completely, using hydraulic jack to every longitudinal main stress steel
Support applies central axis precompression, while using pressure sensor monitoring axial force of the supports size, after precompression reaches setting value,
Start servo-system, so that jack keeps design axis pressure namely jack to be in pressure maintaining holding state, applies in jack
When precompression, the bearing length for adjusting component can be in pressure maintaining holding state in jack with piston rod together change in displacement
When, component locking will be adjusted, to fix its bearing length, in this way when pressure release occurs for jack, the adjusting component of two sides is still
The precompression for undertaking bracing members completely provides dual safety guarantee to a whole set of support system.
The beneficial effect of mechanical self-latching type hydraulic servo end construction of the invention includes:
Mechanical self-latching type hydraulic servo end construction of the invention, integration degree is high, is quickly and expediently installed；
Mechanical self-latching type hydraulic servo end construction of the invention, has mechanical lock mechanism, double shield machine may be implemented
System, effectively improves the security performance of structure；
Mechanical self-latching type hydraulic servo end construction of the invention, is equipped with pressure sensor and displacement sensor, can be real-time
The axial displacement of the variation of observing and controlling bracing members axle power and support system changes, and can grasp the variation trend of excavation slope in time, it is ensured that
The stability of excavation slope；
Mechanical self-latching type hydraulic servo end construction of the invention, simple structure, power transmission is clear, and processing and fabricating facilitates fast
Victory, stability are good；
Mechanical self-latching type hydraulic servo end construction of the invention, execute-in-place step is simple and convenient, effectively improves scene
Construction efficiency.
The construction method of mechanical self-latching type hydraulic servo provided by the invention end construction is illustrated below.
The construction method of mechanical self-latching type hydraulic servo end construction of the invention, includes the following steps:
As shown in Figure 1, the first loading structure 21 and 10 one end of bracing members are fastenedly connected；
Bracing members 10 are set to the inside of foundation pit, and will be in the second loading structure 22 and foundation pit of 10 end of bracing members
Wall is fixedly connected, and 10 the other end of bracing members is fixedly connected with corresponding foundation pit inner wall；
Jack 23 is adjusted so that the piston rod 231 of jack 23 stays on the second mounting surface 2121, and adjusts thousand
Power is shored to apply precompression to bracing members 10 in jin top 23, keeps jack when the precompression applied reaches design requirement
23 shore power；
In 23 telescopic adjustment of jack, the bearing length for adjusting component 24 carries out certainly according to the bearing length of jack 23
It adapts to adjust, when power is shored in the holding of jack 23, the bearing length of lock adjustment component 24 is so that it stays on the second installation
Between face 2121 and the second loading structure 22.
The present invention between the first loading structure 21 and the second loading structure 22 there are two its arrive supporting role structure, one
A is jack 23, the other is adjust component 24, jack 23 apply setting shore power after keep this to shore power, adjust
Component 24 is mechanical support construction, is supported between the first loading structure 21 and the second loading structure 22, jack 23 and tune
Section component 24 provides dual safety guarantee for mechanical self-latching type hydraulic servo end construction, it can be ensured that bracing members remain stable
Precompression, and then ensure that the supporting safety of foundation pit and the stability of foundation pit.
In a specific embodiment, construction method of the invention further include:
One pressure sensor 25 is provided, by pressure sensor 25 be fixedly arranged on the second mounting surface 2121 and with piston rod 231
It is corresponding, power is shored by the detection jack 23 of pressure sensor 25.
The axle power of 25 real-tune TT & C bracing members of pressure sensor changes, and can grasp excavation slope in time based on axle power variation
Change trend, it is ensured that the stability of excavation slope.
In a specific embodiment, construction method of the invention further include:
One displacement sensor 26 is provided, displacement sensor 26 is installed on the second loading structure 22, displacement sensing is passed through
Device 26 detects the distance between the second loading structure 22 and the second mounting surface 2121.
Axial displacement of the displacement sensor 26 for real-tune TT & C bracing members changes, and is passed based on axis shift variation and pressure
The axle power variation that sensor 25 detects, timely grasps the variation trend of excavation slope, it is ensured that the stability of excavation slope.
In a specific embodiment, adjusting component 24 includes the regulating part for being vertically connected at the second mounting surface 2121
241 and the locking piece 242 that is matched with regulating part 241；
After power is shored in jack holding, adjusts locking piece 242 and be resisted against the second loading structure 22, thus lock adjustment
The bearing length of part 241.
In a specific embodiment, regulating part 241 is screw rod, and one end of screw rod is perpendicularly fixed at the second mounting surface
2121, the inside that the other end passes through from the top of the second loading structure 22 and has part to be located at the second loading structure 22；Locking piece
242 be the lock nut for being screwed together in screw rod, and lock nut is between the second loading structure 22 and the second mounting surface 2121, initially
When, there is the spacing of any between lock nut and the top surface of the second loading structure 22, so that screw rod carries out automatic adjusument, so that
Screw rod can automatically adjust its bearing length with the jacking of jack, when jack is in pressure maintaining holding state, screw lock
Nut is determined so that lock nut is resisted against the top surface of the second loading structure 22, to lock the bearing length of screw rod.Preferably,
There are two lock nuts, is screwed together on screw rod, in locking, by two lock nut spiral shells to being resisted against the second loading structure 22
Top surface and locking, be subjected to displacement to avoid screw rod.
In another embodiment specific implementation mode, regulating part 241 is strut, and one end of strut is perpendicularly fixed at the second mounting surface
2121, the other end passes through from the top of the second loading structure 22 and has part on the inside of the second loading structure 22, strut
Offer spaced pin hole along its length；Locking piece 242 is bolt compatible with pin hole, and bolt is slidably
Ground is set to the top surface of the second loading structure 22, is inserted into corresponding pin hole by bolt to realize that bolt is shored together with strut
Between the first loading structure 21 and the second loading structure 22.After jack 23 regulates and shores power, bolt is inserted in pair
With locking strut in the pin hole answered, to support the first loading structure, and then bracing members are supported.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (10)
1. a kind of mechanical self-latching type hydraulic servo end constructs, support is connected between foundation pit inner wall and bracing members end；It is special
Sign is that mechanical self-latching type hydraulic servo end construction includes:
First loading structure has opposite the first mounting surface and the second mounting surface, first mounting surface and corresponding steel branch
Support end is fastenedly connected；
The second loading structure being oppositely arranged with first loading structure, second loading structure and foundation pit inner wall are fixed to be connected
It connects；
It is vertically connected at the jack of second loading structure, the piston rod of the jack stays on second mounting surface
On, power is shored to apply precompression to the bracing members by the adjusting jack；And
Support is connected between second mounting surface and second loading structure and the adjustable adjusting component of bearing length,
The bearing length for adjusting component automatic adjusument with stretching for the jack, the adjusting component are regulating branch
Its bearing length of lockable is after supportting length to stay between first loading structure and second loading structure.
2. mechanical self-latching type hydraulic servo as described in claim 1 end constructs, which is characterized in that on second mounting surface
The end of the corresponding piston rod is installed with pressure sensor, detects shoring for the jack by the pressure sensor
Power.
3. mechanical self-latching type hydraulic servo as described in claim 1 end constructs, which is characterized in that second loading structure
On displacement sensor for detecting distance between second loading structure and second mounting surface is installed.
4. mechanical self-latching type hydraulic servo as described in claim 1 end constructs, which is characterized in that the adjusting component includes
The locking piece for being vertically connected at the regulating part of second mounting surface and being matched with the regulating part；
The other end of the regulating part passes through from the top of second loading structure and has part to be located at the second load knot
The inside of structure；
The locking piece is connected to the regulating part and is resisted against second loading structure, to lock the branch of the regulating part
Support length.
5. mechanical self-latching type hydraulic servo as claimed in claim 4 end constructs, which is characterized in that
The regulating part is screw rod, and described screw rod one end is perpendicularly fixed at second mounting surface, and the other end adds from described second
The inside that the top for carrying structure passes through and has part to be located at second loading structure；
The locking piece is the lock nut for being screwed together in the screw rod, and the lock nut is located at second loading structure and institute
It states between the second mounting surface, by screwing the lock nut so that the lock nut is resisted against second loading structure
Top surface, to realize the bearing length for locking the regulating part.
6. mechanical self-latching type hydraulic servo as described in claim 1 end constructs, which is characterized in that the adjusting component includes
The screw thread locking bar for being vertically connected at the connection sleeve of second mounting surface and being inserted into the connection sleeve, the screw thread locking bar
End be fixedly connected on second loading structure；
It is screwed with fastening nut on the screw thread locking bar, the end for being resisted against the connection sleeve by screwing the fastening nut
And then lock the bearing length of the screw thread locking bar.
7. a kind of construction method of mechanical self-latching type hydraulic servo as described in claim 1 end construction, which is characterized in that packet
Include following steps:
First loading structure is fastenedly connected with bracing members one end；
Bracing members branch is set to the inside of foundation pit, and by the second loading structure of the bracing members end and foundation pit inner wall
It is fixedly connected, described bracing members the other end is fixedly connected with corresponding foundation pit inner wall；
The jack is adjusted so that the piston rod of the jack stays on second mounting surface, and adjusts described thousand
Power is shored to apply precompression to the bracing members in jin top, and described thousand are kept when the precompression applied reaches design requirement
Shore power in jin top；
In the jack telescopic adjustment, the bearing length for adjusting component is carried out according to the bearing length of the jack
Automatic adjusument locks the bearing length for adjusting component so that it stays on institute when power is shored in jack holding
It states between the second mounting surface and second loading structure.
8. construction method as claimed in claim 7, which is characterized in that further include:
One pressure sensor is provided, the pressure sensor is fixedly arranged on second mounting surface and opposite with the piston rod
It answers, shores power by what the pressure sensor detected the jack.
9. construction method as claimed in claim 7, which is characterized in that further include: a displacement sensor is provided, by the displacement
Sensor is installed on second loading structure, detects second loading structure and described the by institute's displacement sensors
The distance between two mounting surfaces.
10. construction method as claimed in claim 7, which is characterized in that the adjusting component includes being vertically connected at described the
The regulating part of two mounting surfaces and the locking piece matched with the regulating part；After power is shored in jack holding, described in adjusting
Locking piece is resisted against second loading structure, to lock the bearing length of the regulating part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910610068.4A CN110359466A (en) | 2019-07-08 | 2019-07-08 | Mechanical self-latching type hydraulic servo end construction and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910610068.4A CN110359466A (en) | 2019-07-08 | 2019-07-08 | Mechanical self-latching type hydraulic servo end construction and its construction method |
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| Publication Number | Publication Date |
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| CN110359466A true CN110359466A (en) | 2019-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910610068.4A Pending CN110359466A (en) | 2019-07-08 | 2019-07-08 | Mechanical self-latching type hydraulic servo end construction and its construction method |
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| CN113802568A (en) * | 2021-08-30 | 2021-12-17 | 北京工业大学 | Mould bag concrete-steel plate combined node for connecting steel pipe inner support and foundation pit support structure |
| CN113944168A (en) * | 2021-10-26 | 2022-01-18 | 北京工业大学 | Screw rod type loose joint for assembled inner support |
| CN113944169A (en) * | 2021-11-01 | 2022-01-18 | 广西大学 | Inner support connecting device for deep foundation pit supporting system |
| CN114412228A (en) * | 2022-03-30 | 2022-04-29 | 中国铁路设计集团有限公司 | Underpinning system for stress conversion of existing structure and control method thereof |
| CN114482068A (en) * | 2022-01-27 | 2022-05-13 | 厦门安捷建筑工程有限公司 | Self-locking type combined unloading device for foundation pit steel supporting system |
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