CN105780825A - Pile foundation construction environment control and evaluation method based on self-balanced detection test - Google Patents
Pile foundation construction environment control and evaluation method based on self-balanced detection test Download PDFInfo
- Publication number
- CN105780825A CN105780825A CN201610189217.0A CN201610189217A CN105780825A CN 105780825 A CN105780825 A CN 105780825A CN 201610189217 A CN201610189217 A CN 201610189217A CN 105780825 A CN105780825 A CN 105780825A
- Authority
- CN
- China
- Prior art keywords
- test
- pile
- detection
- stage
- construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a pile foundation construction environment control and evaluation method based on a self-balanced detection test, and belongs to the technical field of engineering detection and evaluation. The method comprises test pile position geological survey stage, test pile hole construction stage, reinforcement cage construction stage, self-balanced detection test device arrangement and mounting stage, reinforcement cage hoisting construction stage, establishment of divided evaluation systems of test pile concrete construction stage and self-balanced detection test stage, and determination of weight of influence of the divided evaluation systems for the rest result. According to the method, the operability is high, extra expense of pile foundation construction is avoided, the application range of the self-balanced detection test in pile foundation bearing capacity detection is expanded, and the method is applicable to pile foundation detection of pile foundation buildings or structures of bridge structures such as high-rise, super high-rise or towering architectural structure pile foundations, long-span continuous beams, long-span continuous rigid frame bridges, cable-stayed bridges or suspension bridges.
Description
Technical field:
The invention belongs to engineering detecting assessment technology field, be specifically related to a kind of pile foundation construction environment based on autobalanced detection test
Control and evaluation methodology.
Background technology:
Self-balance testing pile method is to be connected with steel reinforcement cage by a kind of special loading equipemtn load box, and the appointment position of embedment stake is (i.e.
Equilibrium point), and the high-pressure oil pipe of load box is guided to ground together with displacement rod, high-pressure oil pipe punching oil load, by thick steel
Plate transfers force to pile body.The method requires that the frictional force of top pile body balances each other with frictional force and the end resistance of bottom pile body
Self-balancing maintains loading.Judge that pile bearing capacity, pile foundation settlement, stake elastic compression and ground are moulded according to upwards downward Q-S curve
Property deformation.After foundation pile self-balancing on-test, the load that load box produces is along pile body axially the most up, down transmit.Assume base
After stake load-bearing, pile body structure intact (without breakage, concrete without isolation, phenomenon of rupture), then concrete under load actions at different levels
The dependent variable produced is consistent with the dependent variable that reinforcing bar produces, and is embedded in the reinforcing steel strain gauge in pile body, Ke Yishi in advance by measuring
Measuring each reinforcing steel strain gauge strain-stress relation of gained under every grade of load action, the stress-strain releasing corresponding stake cross section closes
System, then the dependent variable in the differentiation element of corresponding stake cross section also can be obtained, and the most just can try to achieve each stake under load actions at different levels and cut
The pile shaft force Pz value in face and axle power, frictional resistance and the change transfer law of load depth.
For self-balanced test method is relative to static test, Large strain method, the strong adaptability in place low to the requirement of environment, load
Ability can require to carry out specialized designs, the most unrestricted according to test pile, and the time of whole test duration is short from test preparation
Start to off-test, though but testing expenses are low compared with static test, and more much higher than Large strain method.Particularly self-balanced test method
Can not accomplish to inspect by random samples at random because of load box to be buried underground, it is impossible to the means inspected by random samples at random as engineering pile.Self balanced method
Following deep people research and the perfect problem of needing of method existence:
(1) equilibrium point be accurately positioned problem.The precondition that self-balanced test method is set up is that test pile exists a stake soil supporting body
The balanced division point of system, and the putting position of load box when determining therefrom that test, this is also the key of self-balanced test method success or failure.
The domestic basic skills determining equilibrium point all can be expressed as intuitively: epimere stake limit negative friction is equal to the drag overall of hypomere stake.
But owing to the multiformity of soil layer and stake soil carrying system building mechanism and the complexity of constitutive relation are passed through in stake, equilibrium point the most fixed
Position is extremely difficult or perhaps hardly possible, the most still lacks practicality, simple and effective determination methods.Practical Project
In therefore cause test failure or result of the test to occur the situation of gross differences happens occasionally, being accurately positioned the most still of equilibrium point
Need further deep people's research.
(2) application problem of engineering pile.Can engineering pile use self-balanced test method to carry out the test of bearing capacity, the most domestic
Engineering circles personage's bone of contention, key issue has 2: one to be whether to cause " artificial broken pile "；Two is the size of loading capacity.
It practice, require from using of engineering pile and for the angle of force-mechanism, need consideration is that: whether can affect foundation pile
Vertical and horizontal bearing capacity？Foundation pile settling amount under pile top load effect whether can be caused to strengthen？Whether can be mutual to the stake soil phase
Effect brings adverse effect？Thus, the very corn of a subject is not that can engineering pile use self-balanced test method to carry out bearing capacity
Test, but the most more reasonably uses, and this still needs the deepest people's research.
The construction environment (impact of the factor such as slagging at the bottom of stake and mud skin) of pile foundation, the layout of the equipment such as autobalanced detection load box and peace
The result of autobalanced detection method is affected notable by dress methods etc..At present, not yet have and complete effectively test based on autobalanced detection
Pile foundation construction environment control method, this greatly limits autobalanced detection test application in pile foundation evaluation on bearing capacity.
Summary of the invention:
The present invention is directed to above-mentioned technical problem present in existing pile foundation construction environment measuring technology, it is provided that a kind of based on self-balancing inspection
Test the pile foundation construction environmental Kuznets Curves and evaluation methodology tested.The inventive method utilizes building to be capable of with bridge structure monitoring technology
Autobalanced detection experimental technique is widely applied pile foundation Bearing Capacity Evaluation is more efficient, and significantly improves self-balancing test method
Effectiveness and the pile foundation construction environmental Kuznets Curves of economy and equipment arrange and installation method.This pile foundation environment control method has can
Strong operability, does not results in the extra charge that pile foundation is built, and can significantly improve autobalanced detection test in bearing capacity of pile foundation evaluation
The features such as the effectiveness of middle application, in pile foundation evaluation on bearing capacity, can comment by building monitoring existing with bridge structure and detection
Estimate the technical essential of implementation, prospecting data according to geological conditions belonging to pile foundation before pile foundation construction, determine pile foundation construction ring
The least favorable influence factor in border, for the least favorable factor of construction environment impact, formulates construction environment impact before pile foundation construction and comments
Valency system, whole construction and loading that autobalanced detection is tested test pile are divided into geological mapping stage, pile hole construction stage, reinforcing bar
The cage construction stage, self-balancing equipment layout and erection stage, fabrication of reinforcing cage and lifting construction, the pile concrete construction stage,
And branch's system such as autobalanced detection process of the test, according to importance and the feature of each branch system, determine the power of each branch system
Weight, each branch system can be divided into again multiple subitem, and can be according to difficulty of construction, execution conditions and the construction molding state of subitem
With the factor such as design deviation, the size that affects of autobalanced detection result of the test is determined the weight of each subitem, so formed overall effectively
The pile foundation construction environmental Kuznets Curves tested based on autobalanced detection of overall process and appraisement system.
A kind of pile foundation construction environmental Kuznets Curves based on autobalanced detection test provided by the present invention is with evaluation methodology concrete steps such as
Under:
(1) autobalanced detection test test pile position geological exploration collection of data, described geological exploration data include soil layer information and
Soil parameters, determines test pile stake end bearing capacity and the contribution proportion of pile side resistance, determines test pile initial environment and pile foundation carrying energy
The major influence factors of power, the branch forming the test pile position geological mapping stage evaluates system.
(2) sediment situation at the bottom of borehole sidewall and hole should be detected after test pile pore-forming, specify hole quality and defect, to test pile aperture,
Sediment thickness at the bottom of perpendicularity, hole carries out detecting and carrying out relevant influence factor comprehensive grading, forms the test pile pile hole construction stage
Branch evaluate system.
(3) each subitem affecting steel reinforcement cage construction environment detected and marks, forming the branch of steel reinforcement cage construction stage and evaluate
System, the described each subitem content affecting steel reinforcement cage construction environment includes that the detection of steel reinforcement cage outward appearance, weld seam detection and steel reinforcement cage are from flat
Weighing apparatus detection assay device connects and protection.
(4) each subitem factor affecting autobalanced detection testing equipment Effective Operation tested and marked, forming self-balancing inspection
Survey the layout of testing equipment and branch's appraisement system of erection stage, described affect each of autobalanced detection testing equipment Effective Operation
Subitem factor includes that the installation of reinforcement stresses strain gauge, reinforcing rib meter and wire-protecting, load box are installed and protection and load box levelness.
(5) each subitem of reinforcing bar cage hoisting being detected and marked, the branch forming the reinforcing bar cage hoisting construction stage evaluates system,
Each subitem of described reinforcing bar cage hoisting include steel reinforcement cage deformation, protection of steel bar gabion measure, steel reinforcement cage put, reinforcing bar cage hoisting measure
And the autobalanced detection equipment relevant to steel reinforcement cage is installed and protection.
(6) carry out the concreting of test pile, each subitem of test pile construction stage of concrete is detected and marks, forms examination
Branch's appraisement system of pile concrete construction stage, each subitem of described test pile construction stage of concrete include an end concrete vibrating,
Autobalanced detection testing equipment protection when concrete construction and concreting at load cell position.
(7) carry out test pile bearing capacity detection based on autobalanced detection test, specify the displacement transducer at the upper and lower position of load box
With the test status of pile body reinforcement stresses strain gauge, check loading system and the operation conditions of data collecting system；Additional to existing
The test of loading condition, the working condition of the clearest and the most definite additional load；Each subitem of autobalanced detection process of the test is checked
And scoring, form branch's appraisement system of autobalanced detection experimental stage.
(8) described test pile position geological mapping stage of being formed according to step (1)-step (7), the test pile pile hole construction stage,
Steel reinforcement cage construction stage, the layout of autobalanced detection testing equipment and erection stage, reinforcing bar cage hoisting construction stage, test pile coagulation
Branch's appraisement system of soil construction stage and autobalanced detection experimental stage affects size to result of the test, determines that described each branch is
The weight of system, finally obtains described pile foundation construction environmental Kuznets Curves based on autobalanced detection test and evaluation methodology.
Described step (2), step (3) and step (5) include reinforced concrete member, prestressed concrete member, steel
The detection of component, steel reinforced concrete and concrete filled steel tube, such as strength of materials detection, scantling detection, weld seam detection etc..
The concreting environment of the test pile in described step (6) should according to the complexity poured be divided into base concreting,
Top and the bottom pile body joint portion concreting and load box upper end pile body at the pile body concreting of load box lower end, load cell position
Concreting, pours environment simultaneously and is considered as vibrating the complexity of environment.
Autobalanced detection experimental enviroment described in described step (7) should start to last till this test pile during this test pile
Till having tested, final test phase should comprise the execution conditions impact on test.
The inventive method with the difference of traditional method is: in pile foundation evaluation on bearing capacity, by building and the existing prison of bridge structure
Surveying and the technical essential of check and evaluation implementation, formulating construction environment before pile foundation construction affects appraisement system, self-balancing is examined
Whole construction and the loading of test test stake are divided into geological mapping stage, pile hole construction stage, steel reinforcement cage construction stage, self-balancing
Equipment is arranged and erection stage, fabrication of reinforcing cage and lifting construction, pile concrete construction stage, and autobalanced detection were tested
Cheng Deng branch system, according to importance and the feature of each branch system, determines that the weight of each branch system, each branch system again may be used
It is divided into multiple subitem, and can be according to factors pair such as difficulty of construction, execution conditions and the construction molding state of subitem and design deviations
The size that affects of autobalanced detection result of the test determines the weight of each subitem, and then forms overall effective overall process based on self-balancing
The pile foundation construction environmental Kuznets Curves of detection test and appraisement system, solve pile foundation construction environmental Kuznets Curves based on autobalanced detection test
Lacking with evaluation methodology, this pile foundation environment control method has workable, does not results in the extra charge that pile foundation is built, can
Expand the autobalanced detection test scope of application in pile foundation bearing capacity detects further.This method is applicable to include high level, surpass
High-rise or high-rise buildings structure pile basis, the bridge structure such as big span continuous beam, long-span continuous rigid-framed bridge, cable-stayed bridge or suspension bridge
Pile foundation, especially big at bearing capacity of pile foundation, pile foundation length static test big, traditional or Large strain method cannot or be difficult to carry out
Building or structures pile measurement, the method high level to testing based on autobalanced detection and high-rise buildings structure, Loads of Long-span Bridges
Structure pile foundation construction environment controls have the strongest operability and directive significance with evaluating.
Accompanying drawing illustrates:
Fig. 1 is the pile foundation construction environmental Kuznets Curves tested based on autobalanced detection of the present invention and evaluation methodology step (1) schematic diagram；
Fig. 2 is the pile foundation construction environmental Kuznets Curves tested based on autobalanced detection of the present invention and evaluation methodology step (2) schematic diagram；
Fig. 3 is the pile foundation construction environmental Kuznets Curves tested based on autobalanced detection of the present invention and evaluation methodology step (3) schematic diagram；
Fig. 4 is the pile foundation construction environmental Kuznets Curves tested based on autobalanced detection of the present invention and evaluation methodology entirety step schematic diagram.
In figure: 1: soil layer；2: soil layer；3: soil layer；4: soil layer；6: sediment；7: pile cover reinforcing reinforced mesh；8:
Displacement bar；9: oil pipe；10: reinforcement stresses strain gauge；11: guide post；12: load box；13: datum line beam；14: displacement
Sensor；15: data collecting system；16: loading system.
Detailed description of the invention:
Below in conjunction with embodiment accompanying drawing, the invention will be further described:
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of pile foundation construction ring based on autobalanced detection test provided by the present invention
Border controls and evaluation methodology, and this comprises the following steps:
(1) autobalanced detection test test pile position geological exploration collection of data, determines test pile stake end bearing capacity and pile side resistance
Contribution proportion, determine test pile initial environment and the major influence factors of pile foundation bearing capacity, determine the geological exploration of test pile position
The branch in stage evaluates system.
(2) sediment situation at the bottom of borehole sidewall and hole should be detected after test pile pore-forming, specify hole quality and defect, to stake holes footpath, hang down
Sediment thickness at the bottom of straight degree, hole carries out detecting and relevant influence factor carrying out comprehensive grading, and forms the test pile pile hole construction stage
Branch evaluate system.
(3) each subitem affecting steel reinforcement cage construction environment detected and marks, forming the branch of steel reinforcement cage construction stage and evaluate
System.
(4) each subitem factor affecting autobalanced detection testing equipment Effective Operation tested and marked, forming self-balancing inspection
Survey layout and branch's appraisement system of installation of testing equipment；
(5) each subitem of reinforcing bar cage hoisting being detected and marked, the branch forming the reinforcing bar cage hoisting construction stage evaluates system.
(6) each subitem of test pile construction stage of concrete detected and marks, forming the branch of test pile construction stage of concrete
Appraisement system.
(7) carry out test pile bearing capacity detection based on autobalanced detection test, specify load box top and the bottom displacement transducer and stake
The test status of body reinforcement stresses strain gauge, checks loading system and the operation situation of data collecting system；To there is additional load
The test of condition, the working condition of the clearest and the most definite additional load；Each subitem of autobalanced detection process of the test is checked and comments
Point, form branch's appraisement system of autobalanced detection process of the test；
(8) arrange according to geology phase of exploration, test pile pile hole construction stage, steel reinforcement cage construction stage, self-balancing equipment and install
The branch of stage, reinforcing bar cage hoisting construction stage, test pile construction stage of concrete and autobalanced detection process of the test evaluates system pair
Result of the test affects size, determines the weight of each branch system, and then forms overall effectively stake based on autobalanced detection test
Base construction environment Whole Process Control and appraisement system.
With reference to high-rise with the design drawing of tall and slender structure pile foundation, construction technology data etc., establish in structure pile foundation the most important 1
Root or according to design document require many piles as test pile, base area is surveyed data and is determined soil layer environment and the examination of test pile position
The main carrying action mode (friction pile, end-bearing pile or frictional resistance are the most suitable with end resistance) of stake, sets up high-rise and towering stake
Design point, use environment and construction environment parameter.On the premise of with reference to similar pile foundation Essential Environment influence factor, in conjunction with existing
Field practice of construction, test condition determine the initial environment of test pile, the pile foundation carrying form of test pile and soil sample parameter (angle of friction, pole
Limit bearing capacity) as the higher item of this branch system weight.
Seeing Fig. 1, the inventive method step (2) is i.e. set up the branch in test pile pile hole construction stage and is evaluated system.According to test pile stake
The design data in hole, chooses the construction technology meeting test pile environment, and the construction quality of the most different construction skill (manually hollows out stake
Construction quality is optimum, and drilled pile takes second place), tackle stake holes after test pile pore-forming and clear up, and no less than twice (last clear hole
After must not exceed the operation that need to carry out next construction stage for 2 hours)；Before secondary pile hole cleaning, sediment feelings at the bottom of borehole sidewall and hole should be detected
Condition, determines detection scoring and test pile stake holes environment is carried out preliminary assessment.Before pile foundation descending reinforcing cage, by management and work order
Position is combined pile foundation position is carried out repetition measurement, detects sediment thickness at the bottom of stake holes footpath, perpendicularity, hole.On preliminary assessment basis
On test pile stake holes environment is carried out secondary scoring, ultimately form the pile hole construction stage branch evaluate system.
Seeing Fig. 2, the inventive method step (3) is set up steel reinforcement cage construction stage branch and is evaluated system；Need when making steel reinforcement cage
Preset sound detecting pipe, in order to before static test, test pile is carried out Ultrasonic logging method foundation pile integrity detection；Muscle cage is segmentation welding,
Segmental hoisting；Displacement rod outer pillar, sound detecting pipe sleeve for connection weld all around needed for autobalanced detection test, it is ensured that the not permeable mud of pillar
Slurry, and with steel reinforcement cage colligation or be welded into entirety, displacement rod also uses sleeve weld all around to connect；After steel reinforcement cage has been constructed based on
(according to concrete structure engineering construction quality accident specification etc., more than two grades weld seams need for reinforcement welding, colligation onthe technology of site test
Carry out having children outside the state plan the detection modes such as flaw detection) Construction Condition of steel reinforcement cage, the quality of protection pipe (are supervised according to building and bridge structure
Survey technology specification etc.) to detect and mark, the branch finally setting up the steel reinforcement cage construction stage evaluates system.
Seeing Fig. 2, the branch of layout and erection stage that the inventive method step (4) sets up autobalanced detection testing equipment evaluates
System；Strictly determine the reinforcement stresses strain gauge 10 position on main muscle by test pile drawing, the direct colligation of displacement transducer 14 in
On main muscle, colligation notices the wire of protection reinforcement stresses strain gauge 10, during through load box 12 preformed hole, reserved wire
In preformed hole；Load box 12 should stand up and go up entirely, hangs flat for upper joint steel reinforcement cage (including outer steel pipe and interior steel pipe) with crane
Rise weld with load box upper plate (all main muscle weld all arounds, and guarantee when steel reinforcement cage lifts by crane with load box without departing from) integral, it is ensured that
Steel reinforcement cage axis and load box center in the same horizontal line, then spot welding loudspeaker muscle, loudspeaker muscle upper end with strengthen stirrup, lower end
With the edge spot welding of load box inner circle；Ensure load box levelness；Then flat lower joint steel reinforcement cage of slinging is connected with load box lower shoe,
The lower loudspeaker muscle of welding, after layout and the installation that autobalanced detection tests pre-buried equipment, on affecting detection equipment Effective Operation
Each subitem factor carry out testing and mark (according to building and bridge structure Specifications of Monitoring Technology), finally set up autobalanced detection examination
Test the layout of equipment and branch's evaluation system is installed.
Seeing Fig. 3, the branch setting up the inventive method step (5) the reinforcing bar cage hoisting construction stage evaluates system；Fabrication of reinforcing cage
During with lifting, take the protective measure of necessity, it is ensured that steel reinforcement cage is indeformable, non-warping；After shaping, arrange outside steel reinforcement cage
Control the measuring accuracy requirement that the cushion block of protective layer, its vertical spacing and lateral arrangement number should be tested by pile foundation and autobalanced detection
Determine；Each steel reinforcement cage top should arrange suspension ring；Should number by sequential segment from top to bottom after fabrication of reinforcing cage is good；At steel reinforcement cage
Inner side colligation displacement rod outer pillar, type ultrasonic testing tube.Steel reinforcement cage is put the most successively；Can not be placed directly on the ground, should
The pad lumps of wood etc., lifting to be easy in the position put, and each subitem of fabrication of reinforcing cage and lifting is detected and marked, and is formed
The branch of reinforcing bar cage hoisting construction stage evaluates system.
Seeing Fig. 3 is the pile foundation construction environmental Kuznets Curves tested based on autobalanced detection of the present invention and evaluation methodology step 6) i.e. test pile is mixed
Branch's appraisement system of solidifying soil construction stage is set up, and carries out the concreting of test pile, and conduit is watered by load box arrival stake end and smashes
Concrete, when concrete is close to load box, pulls out conduit speed and should slow down, after load box top concrete height reaches requirement
Load box can be pulled out in conduit bottom, and pouring concrete is to design stake top；Load box bottom concrete slump is preferably greater than 200mm,
Be easy to concrete at load box on turn over.Bury load box, protection oil pipe and steel pipeline sealing end (welding, prevent cement mortar from leaking into) with steel plate,
Each subitem of test pile construction stage of concrete is detected and marks, and the branch forming test pile construction stage of concrete evaluates body
System.
See Fig. 4, branch's appraisement system of the inventive method step (7) autobalanced detection experimental stage；Carry out based on self-balancing
The test pile bearing capacity detection of detection test, specifies the reinforcement stresses at the displacement transducer 14 of load box 12 top and the bottom and pile body
The test status of strain gauge 10, checks loading system 16 and the operation situation of data collecting system 15；To there is additional load bar
The test of part, the working condition of the clearest and the most definite additional load；According to autobalanced detection test methods and procedures to pile foundation bearing capacity
Detect, the clear and definite load step of emphasis, hold the lotus time, the impact on autobalanced detection result of the test such as uninstall process, and will
Measured result is analyzed with theoretical analysis result, examines self-balancing according to the reliability of actually detected process and testing result
The each subitem surveying process of the test checks and marks, and forms branch's appraisement system of autobalanced detection experimental stage.
Seeing Fig. 4, it is complete that the inventive method step (8) sets up overall effectively pile foundation construction environment based on autobalanced detection test
Process control and appraisement system；The appraisement system of combining step (1)-step (7) each branch system, according to each branch system pair
Pile Foundation Self-balance Test result affect size, (suggestion branch system weight can be by following to determine the weight of each branch system
Index determines: the geological mapping stage 0.15, the pile hole construction stage 0.10, the steel reinforcement cage construction stage 0.10, and self-balancing equipment is arranged
With erection stage 0.20, fabrication of reinforcing cage and lifting construction 0.10, pile concrete construction stage 0.10, and autobalanced detection examination
Test branch's systems 0.25 such as process), and then set up overall effectively pile foundation construction environmental whole process control based on autobalanced detection test
System and appraisement system.
Claims (4)
1. a pile foundation construction environmental Kuznets Curves based on autobalanced detection test and evaluation methodology, it is characterised in that the method specifically walks
Rapid as follows:
(1) autobalanced detection test test pile position geological exploration collection of data, described geological exploration data include soil layer information and
Soil parameters, determines test pile stake end bearing capacity and the contribution proportion of pile side resistance, determines test pile initial environment and pile foundation carrying energy
The major influence factors of power, the branch forming the test pile position geological mapping stage evaluates system；
(2) sediment situation at the bottom of borehole sidewall and hole should be detected after test pile pore-forming, specify hole quality and defect, to test pile aperture,
Sediment thickness at the bottom of perpendicularity, hole carries out detecting and carrying out relevant influence factor comprehensive grading, forms the test pile pile hole construction stage
Branch evaluate system；
(3) each subitem affecting steel reinforcement cage construction environment detected and marks, forming the branch of steel reinforcement cage construction stage and evaluate
System, the described each subitem content affecting steel reinforcement cage construction environment includes that the detection of steel reinforcement cage outward appearance, weld seam detection and steel reinforcement cage are from flat
Weighing apparatus detection assay device connects and protection；
(4) each subitem factor affecting autobalanced detection testing equipment Effective Operation tested and marked, forming self-balancing inspection
Survey the layout of testing equipment and branch's appraisement system of erection stage, described affect each of autobalanced detection testing equipment Effective Operation
Subitem factor includes that the installation of reinforcement stresses strain gauge, reinforcing rib meter and wire-protecting, load box are installed and protection and load box levelness；
(5) each subitem of reinforcing bar cage hoisting being detected and marked, the branch forming the reinforcing bar cage hoisting construction stage evaluates system,
Each subitem of described reinforcing bar cage hoisting include steel reinforcement cage deformation, protection of steel bar gabion measure, steel reinforcement cage put, reinforcing bar cage hoisting measure
And the autobalanced detection equipment relevant to steel reinforcement cage is installed and protection；
(6) carry out the concreting of test pile, each subitem of test pile construction stage of concrete is detected and marks, forms examination
Branch's appraisement system of pile concrete construction stage, each subitem of described test pile construction stage of concrete include an end concrete vibrating,
Autobalanced detection testing equipment protection when concrete construction and concreting at load cell position；
(7) carry out test pile bearing capacity detection based on autobalanced detection test, specify the displacement transducer at the upper and lower position of load box
With the test status of pile body reinforcement stresses strain gauge, check loading system and the operation conditions of data collecting system；Additional to existing
The test of loading condition, the working condition of the clearest and the most definite additional load；Each subitem of autobalanced detection process of the test is checked
And scoring, form branch's appraisement system of autobalanced detection experimental stage；
(8) described test pile position geological mapping stage of being formed according to step (1)～step (7), the test pile pile hole construction stage,
Steel reinforcement cage construction stage, the layout of autobalanced detection testing equipment and erection stage, reinforcing bar cage hoisting construction stage, test pile coagulation
Branch's appraisement system of soil construction stage and autobalanced detection experimental stage affects size to result of the test, determines that described each branch is
The weight of system, finally obtains described pile foundation construction environmental Kuznets Curves based on autobalanced detection test and evaluation methodology.
A kind of pile foundation construction environmental Kuznets Curves based on autobalanced detection test the most according to claim 1 and evaluation methodology, its
Be characterised by described step (2), step (3) and step (5) include reinforced concrete member, prestressed concrete member,
The detection of steel beam column, steel reinforced concrete and concrete filled steel tube, such as strength of materials detection, scantling detection, weld seam detection.
A kind of pile foundation construction environmental Kuznets Curves based on autobalanced detection test the most according to claim 1 and evaluation methodology, its
It is characterised by that the concreting environment of the test pile in described step (6) should be divided into base concrete to water according to the complexity poured
Build, the pile body concreting of load box lower end, top and the bottom pile body joint portion concreting and load box upper end at load cell position
Pile concrete pours, and pours environment simultaneously and is considered as vibrating the complexity of environment.
A kind of pile foundation construction environmental Kuznets Curves based on autobalanced detection test the most according to claim 1 and evaluation methodology, its
It is characterised by that the autobalanced detection experimental enviroment described in described step (7) should start to last till this test pile during this test pile
Till detection test completes, final test phase should comprise the execution conditions impact on test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610189217.0A CN105780825B (en) | 2016-03-28 | 2016-03-28 | A kind of pile foundation construction environmental Kuznets Curves and evaluation method based on autobalanced detection experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610189217.0A CN105780825B (en) | 2016-03-28 | 2016-03-28 | A kind of pile foundation construction environmental Kuznets Curves and evaluation method based on autobalanced detection experiment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105780825A true CN105780825A (en) | 2016-07-20 |
| CN105780825B CN105780825B (en) | 2017-11-21 |
Family
ID=56392215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610189217.0A Active CN105780825B (en) | 2016-03-28 | 2016-03-28 | A kind of pile foundation construction environmental Kuznets Curves and evaluation method based on autobalanced detection experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105780825B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411907A (en) * | 2018-05-18 | 2018-08-17 | 上海勘测设计研究院有限公司 | The self-balance test embedded rock pile and its construction method and test method of arrangement two-stage load box |
| CN110528596A (en) * | 2019-07-16 | 2019-12-03 | 天津华勘基础工程检测有限公司 | A kind of static loading experiment construction technology and detection method based on self-balancing technology |
| CN111560998A (en) * | 2020-06-18 | 2020-08-21 | 杭州大地工程测试技术有限公司 | Equipment for pile foundation self-balancing detection and detection method using equipment |
| CN113836763A (en) * | 2021-09-02 | 2021-12-24 | 中国石化工程建设有限公司 | Self-balancing system and verification method for buried pressure-bearing large-diameter socket connecting pipeline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896712A (en) * | 2006-06-14 | 2007-01-17 | 郭杨 | Planar loading testing method and tester for self-balanced deep foundation piles |
| CN102535529A (en) * | 2011-12-08 | 2012-07-04 | 中铁五局（集团）有限公司 | Construction method of self-balancing method pile foundation bearing capacity test device |
| CN104652497A (en) * | 2014-12-26 | 2015-05-27 | 交通运输部公路科学研究所 | Underwater concrete pile foundation damage analyzing and estimating method |
| CN204435439U (en) * | 2015-01-12 | 2015-07-01 | 宋博琪 | A kind of foundation pile static load detects uses Novel self-balanced load box |
| CN105155596A (en) * | 2015-08-12 | 2015-12-16 | 来安县新元机电设备设计有限公司 | Structure and method for testing steel pipe inclined pile load box |
-
2016
- 2016-03-28 CN CN201610189217.0A patent/CN105780825B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896712A (en) * | 2006-06-14 | 2007-01-17 | 郭杨 | Planar loading testing method and tester for self-balanced deep foundation piles |
| CN102535529A (en) * | 2011-12-08 | 2012-07-04 | 中铁五局（集团）有限公司 | Construction method of self-balancing method pile foundation bearing capacity test device |
| CN104652497A (en) * | 2014-12-26 | 2015-05-27 | 交通运输部公路科学研究所 | Underwater concrete pile foundation damage analyzing and estimating method |
| CN204435439U (en) * | 2015-01-12 | 2015-07-01 | 宋博琪 | A kind of foundation pile static load detects uses Novel self-balanced load box |
| CN105155596A (en) * | 2015-08-12 | 2015-12-16 | 来安县新元机电设备设计有限公司 | Structure and method for testing steel pipe inclined pile load box |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411907A (en) * | 2018-05-18 | 2018-08-17 | 上海勘测设计研究院有限公司 | The self-balance test embedded rock pile and its construction method and test method of arrangement two-stage load box |
| CN108411907B (en) * | 2018-05-18 | 2024-07-30 | 上海勘测设计研究院有限公司 | Self-balancing method test rock-socketed pile for arranging two-stage load boxes, construction method and test method thereof |
| CN110528596A (en) * | 2019-07-16 | 2019-12-03 | 天津华勘基础工程检测有限公司 | A kind of static loading experiment construction technology and detection method based on self-balancing technology |
| CN111560998A (en) * | 2020-06-18 | 2020-08-21 | 杭州大地工程测试技术有限公司 | Equipment for pile foundation self-balancing detection and detection method using equipment |
| CN113836763A (en) * | 2021-09-02 | 2021-12-24 | 中国石化工程建设有限公司 | Self-balancing system and verification method for buried pressure-bearing large-diameter socket connecting pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105780825B (en) | 2017-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206512764U (en) | A kind of horizontally loading test system for applying vertical load in stake top | |
| CN104631519B (en) | Pile foundation bearer properties model test apparatus and test method under complicated loads | |
| CN106049559B (en) | A kind of large diameter pile foundation autobalanced detection method based on load-compensating | |
| CN102535529A (en) | Construction method of self-balancing method pile foundation bearing capacity test device | |
| CN105780825A (en) | Pile foundation construction environment control and evaluation method based on self-balanced detection test | |
| CN209339193U (en) | A kind of engineering pile body construction monitoring device based on BIM technology | |
| CN106596287B (en) | The lateral loading device of tool-type masonry anti-reflecting bending strength test | |
| CN105297790A (en) | Existing engineering pile body integrity and defect type judgment method | |
| CN105275024B (en) | Defective Big-Diameter Rock-Embedded Pile vertical bearing capacity detection and the method reinforced | |
| CN109469125A (en) | A kind of the load on pile foundation experimental rig and its detection method of optical fiber grating sensing detection | |
| CN108442419A (en) | Building foundation detection device and detection method | |
| CN106088172B (en) | Testing device for combined measurement of pile top and pile end displacement of cast-in-place pile | |
| CN110374094A (en) | Construction method of mechanical pore-forming cast-in-place pile | |
| CN110258663B (en) | Device and method for verifying foundation pile internal force test result | |
| CN206607613U (en) | A kind of bored concrete pile displacement acquisition device | |
| CN116147867A (en) | Bridge safety detection method and system | |
| CN216041382U (en) | Bored concrete pile sediment testing arrangement | |
| CN205839752U (en) | A kind of Big-Diameter Rock-Embedded Pile | |
| CN206495243U (en) | Building foundation pit hole for grout pile hole diameter detection apparatus | |
| CN111827375A (en) | Construction method for detecting foundation pile load based on self-balancing static load | |
| CN213418410U (en) | Tall and big space fastener type full scaffold monitoring structure | |
| CN114775671A (en) | Large-diameter precast tubular pile construction method under complex geology | |
| CN209798848U (en) | Pile foundation load test device for fiber bragg grating sensing detection | |
| CN105735372A (en) | Advance detection method of bearing capacity of single end-bearing type major-diameter cast-in-place pile | |
| CN208501758U (en) | A kind of experimental rig of Collapsible Loess District Long-short Pile Group model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |