CN105780828B - The model test apparatus and operating method that open-cut foundation ditch influences on adjacent building basis - Google Patents
The model test apparatus and operating method that open-cut foundation ditch influences on adjacent building basis Download PDFInfo
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- CN105780828B CN105780828B CN201610276119.0A CN201610276119A CN105780828B CN 105780828 B CN105780828 B CN 105780828B CN 201610276119 A CN201610276119 A CN 201610276119A CN 105780828 B CN105780828 B CN 105780828B
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- 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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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The model test apparatus and operating method influenceed the invention discloses a kind of open-cut foundation ditch on adjacent building basis, is related to foundation construction technical field.The present invention includes Work condition analogue framework, building simulation system, comprehensive monitoring analysis system, and Work condition analogue framework includes structural framing and testing stand base；Building simulation system is that two components are located on testing stand base, every group of building simulation system includes simulation Rock And Soil, tank, lifting water tank, prefabricated pile basis, load, lifting water tank connects with tank, tank connects with simulation Rock And Soil, prefabricated pile basis is extend into simulation Rock And Soil, and load is placed on prefabricated pile basis；Comprehensive monitoring analysis system includes the displacement inductive head being embedded in simulation Rock And Soil and coupled comprehensive monitoring analysing terminal.The real time contrast that multigroup different parameters can be carried out using the present invention is analyzed, and greatly improves test efficiency, makes result of the test more universal representative, helpful reference is provided for the scientific research and technology of excavation of foundation pit.
Description
Technical field
The present invention relates to foundation construction technical field, model of specifically a kind of open-cut foundation ditch on the influence of adjacent building basis
Experimental rig and operating method.
Background technology
As the current situation of traffic of large- and-medium size cities increasingly congestion gradually aggravates, building for subway turns into drive urban economy
Development, alleviate traffic pressure, pull the important transport hub of commercial economy.
Point with tunneling is dug in the construction of subway clearly, and subsurface excavation method builds that subway cost is larger, difficulty of construction is high, precision controlling
Difficulty, by contrast, the advantage of cut and cover method are just highlighted, and construction is convenient, and safety coefficient is high, and cost is relatively small, but therewith
And come, the subway excavated pavement that is bound to is built in open cut influences that traffic above-ground is unobstructed, it is stable to influence surface structures.Therefore, study bright
Subway station is dug adjacent to the influence of existing building pile foundation to have great importance.
Traditional subway station experimental study form is more single, and monitoring difficulty is higher in real time, and experiment process is complex,
And real time contrast's analysis of various working can not be accomplished, this is that subway foundation pit stability study brings larger obstruction, can not be obtained
Comprehensive comprehensive general result.
The content of the invention
The model that the technical problems to be solved by the invention are to provide a kind of open-cut foundation ditch and influenceed on adjacent building basis tries
Experiment device and operating method, assembled structure, there is comparative analysis function, monitoring means is advanced, and possesses various working simultaneously
The function of progress, real time contrast's property analysis of multigroup experiment different parameters can be carried out, test efficiency and precision is substantially increased, makes
Result of the test is more universal representative, and helpful reference and guidance are provided for the scientific research and technology of excavation of subway foundation pit.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of open-cut foundation ditch is to adjacent building base
The model test apparatus that plinth influences, including Work condition analogue framework, building simulation system, comprehensive monitoring analysis system, operating mode mould
Intending framework includes structural framing and testing stand base, and structural framing is looped around the surrounding of testing stand base；Building simulation system
For two groups, two components are located on testing stand base, every group of building simulation system include simulation Rock And Soil, tank, lifting water tank,
Prefabricated pile basis, load, simulation Rock And Soil are placed on testing stand base, and lifting water tank connects with tank, tank and simulation ground
Body is connected, and prefabricated pile basis is extend into simulation Rock And Soil, and load is placed on prefabricated pile basis；The comprehensive monitoring analysis system
System includes displacement inductive head and comprehensive monitoring analysing terminal, and displacement inductive head is embedded in simulation Rock And Soil, connect by pre-buried
Line is connected with comprehensive monitoring analysing terminal.
Further technical scheme, two groups of buildings simulation system mirror image set up separately on testing stand base.
Further technical scheme, the tank in two groups of building simulation systems is adjacent, left between two tanks place it is comprehensive
The space of monitoring analysing terminal is closed, track lifting of the lifting water tank along sink outer walls, the bottom for lifting water tank is provided with and tank bottom
The water pipe of portion's connection.
Further technical scheme, substrate sandwich, described wiring are provided between testing stand base and simulation Rock And Soil
Horizontal turn of vertical trend of wiring is made by roller of transferring or turns to be horizontally orientated to vertically, wherein, along the level of testing stand base laying
The wiring of trend is arranged in substrate sandwich.
Further technical scheme, the side that tank is affixed with simulation Rock And Soil are provided with some permeable holes.
A kind of operating method for the model test apparatus that open-cut foundation ditch influences on adjacent building basis, comprises the following steps：
A, the simulation Rock And Soil of configuration and foundation ditch analog material, building simulation system is built, while in simulation Rock And Soil
Interior pre-buried displacement inductive head, wiring, and wiring is led into comprehensive monitoring analysing terminal, and meanwhile prefabricated pile basis is pre-buried to design
Specified location；
B, the prefabricated pile basis of both sides sets the load of different weight respectively, simulate the excavation simulation of Rock And Soil, will
Existing foundation level caused by two groups of experiments carries out Comprehensive Comparison with vertical displacement, completes the contrast under different load modes
Model test；
C, simulation Rock And Soil is filled again, makes the weight of both sides load identical, adjusts side tank height, controls underground water
Position, excavation of foundation pit and research and application data are carried out, complete basic displacement contrast of the identical building in the case where having water and anhydrous state
Experiment；
D, the discrepancy in elevation of both sides load and both sides lifting water tank is designed, different load cases is carried out, differently descends water level elevation
In the case of excavation of foundation pit displacement monitoring orthogonal test, pass through the comparative analysis of comprehensive monitoring analysing terminal.
It is using beneficial effect caused by above-mentioned technical proposal：
1）Simple operation, Stability Analysis of Structures, accurate simulation can be carried out with agent structure to the basis of existing building, and can lead to
Cross adjustment water tank and carry out controlling water level absolute altitude, carry out level of ground water simulation；
2）Building simulation system is used for basis and the upper body structure for simulating existing building, can by changing loading
To carry out the influence of foundation excavation existing building basis contrast test under different load modes, different levels of ground water；
3）Comprehensive monitoring analysis system can be with comprehensive analysis excavation of subway foundation pit horizontal, the vertical position basic to existing building
The influence of the parameters such as shifting, and the correction data analysis of multigroup experiment while progress can be carried out, it is efficiently convenient, general result is drawn,
With certain representative and reference value, theoretical reference is provided for construction.
Brief description of the drawings
Fig. 1 is the cutting structural representation of apparatus of the present invention one embodiment；
In figure：1st, structural framing；2nd, substrate sandwich；3rd, testing stand base；4th, Rock And Soil is simulated；5th, prefabricated pile basis；6、
Load；7th, displacement inductive head；8th, wiring；9th, turnover roller；10th, comprehensive monitoring analysing terminal；11st, water tank is lifted；12nd, tank.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
The structure of the present invention is as shown in figure 1, including Work condition analogue framework, building simulation system, comprehensive monitoring analysis system
System, Work condition analogue framework include structural framing 1 and testing stand base 3, and structural framing 1 is looped around the surrounding of testing stand base 3, shape
Into enclosing structure sealed around；Building simulation system is two groups, and two groups of mirror images set up separately on testing stand base 3, often set up
Building thing simulation system includes simulation Rock And Soil 4, tank 12, lifting water tank 11, prefabricated pile basis 5, load 6, and simulation Rock And Soil 4 is put
In on testing stand base 3, lifting water tank 11 connects with tank 12, and tank 12 is provided with some with the side that simulation Rock And Soil 4 is affixed
Permeable hole, tank 12 are connected with simulation Rock And Soil 4, and prefabricated pile basis 5 is extend into simulation Rock And Soil 4, and load 6 is placed in prefabricated pile
On basis 5；Comprehensive monitoring analysis system includes displacement inductive head 7 and comprehensive monitoring analysing terminal 10, and displacement inductive head 7 is pre-buried
In simulation Rock And Soil 4, it is connected by pre-buried wiring 8 with comprehensive monitoring analysing terminal 10.In two groups of building simulation systems
Tank 12 it is adjacent, the space of placed comprehensive monitoring analysing terminal 10 is left between two tanks 12, lifting water tank 11 is along tank 12
The track lifting of outer wall, the bottom of lifting water tank 11 are provided with the water pipe connected with the bottom of tank 12.
Wherein, Work condition analogue framework is used to simulate ground geological environment in situ；Building simulation system is existing for simulating
Basis and the upper body structure of building, the test simulation that can be carried out under different load modes is loaded by changing；It is comprehensive
Monitoring analysis system can be with comprehensive analysis excavation of subway foundation pit to the level on existing building basis, the shadow of the parameter such as vertical displacement
Ring, and the correction data analysis of multigroup experiment while progress can be carried out, it is efficiently convenient.
The free structure framework of Work condition analogue framework is used to ensure simulation Rock And Soil, lifting water tank and other pilot systems
Stability Analysis of Structures, simulation Rock And Soil are that the test material developed according to live Geotechnical Parameter after similar proportioning forms, maximum journey
Degree simulation field working conditions, lifting water tank are connected with bottom of gullet, can entered by lifting the water level in water tank position adjustment tank
And simulated groundwater position；Substrate sandwich is free space below Rock And Soil, for monitoring the bottom traction of wiring.
Building simulation system is made up of prefabricated pile basis, load etc., and prefabricated pile basis is used to simulate existing building stake
Base, load are used to simulate superstructure agent structure, and the experiment under different load modes is simulated by adjusting load weight.
Comprehensive monitoring analysis system is supervised by high precision displacement inductive head, horizontal wiring, vertical wiring, turnover roller with comprehensive
The devices such as analysing terminal composition is surveyed, displacement inductive head, horizontal wiring and turnover roller composition fixed pulley system, excavation of foundation pit is made
Into level with vertical displacement be transferred to monitoring analysing terminal, displacement parameter is converted into electric signal, multigroup test data is whole
Contrast is closed, draws conclusion (of pressure testing), there is certain representative and generality.
The operating method of the present invention, comprises the following steps：
A, the simulation Rock And Soil 4 of configuration and foundation ditch analog material, building simulation system is built, while in simulation Rock And Soil
Pre-buried displacement inductive head 7, wiring 8 in 4, and wiring 8 is led into comprehensive monitoring analysing terminal 10, and meanwhile prefabricated pile basis 5 is pre-
Bury to design specified location；
B, the prefabricated pile basis 5 of both sides sets the load 6 of different weight respectively, simulate the excavation simulation of Rock And Soil 4,
Existing foundation level caused by two groups of experiments and vertical displacement are subjected to Comprehensive Comparison, completed under the different patterns of load 6
Contrast model is tested；
C, simulation Rock And Soil 4 is filled again, makes the weight of both sides load 6 identical, adjusts side tank height, controls underground
Water level, excavation of foundation pit and research and application data are carried out, complete basic displacement pair of the identical building in the case where having water and anhydrous state
Than experiment；
D, the discrepancy in elevation of both sides load 6 and both sides lifting water tank 11 is designed, different load cases is carried out, differently descends water level stake
Excavation of foundation pit displacement monitoring orthogonal test in the case of height, passes through the comparative analysis of comprehensive monitoring analysing terminal 10.
Work condition analogue framework in the present invention is used to simulate ground geological environment in situ；Building simulation system is used to simulate
Basis and the upper body structure of existing building, the test simulation that can be carried out under different load modes is loaded by changing；
Comprehensive monitoring analysis system can be with comprehensive analysis excavation of subway foundation pit to parameters such as the basic level of existing building, vertical displacements
Influence, and the correction data analysis of multigroup experiment while progress can be carried out, it is efficiently convenient, general result is drawn, there is certain generation
Table and reference value, theoretical reference is provided for construction.
Claims (6)
1. the model test apparatus that a kind of open-cut foundation ditch influences on adjacent building basis, it is characterised in that including Work condition analogue frame
Frame, building simulation system, comprehensive monitoring analysis system, Work condition analogue framework include structural framing（1）With testing stand base
（3）, structural framing（1）It is looped around testing stand base（3）Surrounding；Building simulation system is two groups, and two components are located at experiment
Platform base（3）On, every group of building simulation system includes simulation Rock And Soil（4）, tank（12）, lifting water tank（11）, prefabricated pile
Basis（5）, load（6）, simulate Rock And Soil（4）It is placed in testing stand base（3）On, lift water tank（11）With tank（12）Connection,
Tank（12）With simulating Rock And Soil（4）Connection, prefabricated pile basis（5）It extend into simulation Rock And Soil（4）It is interior, load（6）It is placed in pre-
Pile foundation processed（5）On；The comprehensive monitoring analysis system includes displacement inductive head（7）With comprehensive monitoring analysing terminal（10）,
Displacement inductive head（7）It is embedded in simulation Rock And Soil（4）It is interior, pass through pre-buried wiring（8）With comprehensive monitoring analysing terminal（10）Phase
Even.
2. the model test apparatus that open-cut foundation ditch according to claim 1 influences on adjacent building basis, it is characterised in that
Two groups of buildings simulation system mirror image sets up separately in testing stand base（3）On.
3. the model test apparatus that open-cut foundation ditch according to claim 1 influences on adjacent building basis, it is characterised in that
Tank in two groups of building simulation systems（12）It is adjacent, two tanks（12）Between leave placed comprehensive monitoring analysing terminal（10）
Space, lift water tank（11）Along tank（12）The track lifting of outer wall, lifts water tank（11）Bottom be provided with and tank（12）
The water pipe of bottom connection.
4. the model test apparatus that open-cut foundation ditch according to claim 1 influences on adjacent building basis, it is characterised in that
In testing stand base（3）With simulation Rock And Soil（4）Between be provided with substrate sandwich（2）, described wiring（8）Pass through roller of transferring
（9）Make wiring（8）Level turns vertical trend or turns to be horizontally orientated to vertically, wherein, along testing stand base（3）That lays is horizontally orientated to
Wiring（8）It is arranged on substrate sandwich（2）It is interior.
5. the model test apparatus that open-cut foundation ditch according to claim 1 influences on adjacent building basis, it is characterised in that
Tank（12）With simulating Rock And Soil（4）The side being affixed is provided with some permeable holes.
A kind of 6. operation of the model test apparatus influenceed such as any one of claim 1-5 open-cut foundation ditch on adjacent building basis
Method, it is characterised in that comprise the following steps：
A, the simulation Rock And Soil of configuration and foundation ditch analog material（4）, building simulation system is built, while in simulation Rock And Soil
（4）Interior pre-buried displacement inductive head（7）, wiring（8）, and by wiring（8）Lead to comprehensive monitoring analysing terminal（10）, while will be prefabricated
Pile foundation（5）Pre-buried extremely design specified location；
B, the prefabricated pile basis of both sides（5）The load of different weight is set respectively（6）, carry out simulate Rock And Soil excavation simulation,
Existing foundation level caused by two groups of experiments and vertical displacement are subjected to Comprehensive Comparison, complete different loads（6）Under pattern
Contrast model experiment；
C, simulation Rock And Soil is filled again, makes both sides load（6）Weight it is identical, adjust side tank height, control underground water
Position, excavation of foundation pit and research and application data are carried out, complete basic displacement contrast of the identical building in the case where having water and anhydrous state
Experiment；
D, both sides load is designed（6）Water tank is lifted with both sides（11）The discrepancy in elevation, carry out different load cases, differently descend water level stake
Excavation of foundation pit displacement monitoring orthogonal test in the case of height, passes through comprehensive monitoring analysing terminal（10）Comparative analysis.
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| CN201610276119.0A CN105780828B (en) | 2016-04-29 | 2016-04-29 | The model test apparatus and operating method that open-cut foundation ditch influences on adjacent building basis |
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| CN105780828B true CN105780828B (en) | 2018-01-23 |
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| CN110631560B (en) * | 2019-08-13 | 2021-11-26 | 中铁上海工程局集团有限公司 | Underground excavation interval monitoring and measuring method for subway station in dense building area |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4378244B2 (en) * | 2004-08-23 | 2009-12-02 | 株式会社竹中工務店 | Loading test method for piled raft foundation |
| CN201843152U (en) * | 2010-10-19 | 2011-05-25 | 同济大学 | Simulation tester for construction and monitoring of deep foundation pit engineering |
| CN102914632A (en) * | 2012-10-16 | 2013-02-06 | 武汉理工大学 | Multifunctional geotechnical model test chamber |
| CN103454400A (en) * | 2013-07-11 | 2013-12-18 | 北京工业大学 | Model box applied to large stereoscopic synthesis simulation test bench in geotechnical engineering |
| CN204590103U (en) * | 2015-02-04 | 2015-08-26 | 山东大学 | Base Pit Excavation Simulation device under hypergravity condition |
| CN205712226U (en) * | 2016-04-29 | 2016-11-23 | 石家庄铁道大学 | The model test apparatus that adjacent building basis is affected by open-cut foundation ditch |
-
2016
- 2016-04-29 CN CN201610276119.0A patent/CN105780828B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4378244B2 (en) * | 2004-08-23 | 2009-12-02 | 株式会社竹中工務店 | Loading test method for piled raft foundation |
| CN201843152U (en) * | 2010-10-19 | 2011-05-25 | 同济大学 | Simulation tester for construction and monitoring of deep foundation pit engineering |
| CN102914632A (en) * | 2012-10-16 | 2013-02-06 | 武汉理工大学 | Multifunctional geotechnical model test chamber |
| CN103454400A (en) * | 2013-07-11 | 2013-12-18 | 北京工业大学 | Model box applied to large stereoscopic synthesis simulation test bench in geotechnical engineering |
| CN204590103U (en) * | 2015-02-04 | 2015-08-26 | 山东大学 | Base Pit Excavation Simulation device under hypergravity condition |
| CN205712226U (en) * | 2016-04-29 | 2016-11-23 | 石家庄铁道大学 | The model test apparatus that adjacent building basis is affected by open-cut foundation ditch |
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Inventor after: Zhang Jian Inventor after: Du Yanliang Inventor after: Zhao Weigang Inventor after: Wang Jingchun Inventor after: Gao Yang Inventor after: Li Jianzhi Inventor before: Du Yanliang Inventor before: Zhang Jian Inventor before: Zhao Weigang Inventor before: Wang Jingchun Inventor before: Gao Yang Inventor before: Li Jianzhi |
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