CN105926564B - A kind of composite foundation loading testing method - Google Patents
A kind of composite foundation loading testing method Download PDFInfo
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- CN105926564B CN105926564B CN201610266241.XA CN201610266241A CN105926564B CN 105926564 B CN105926564 B CN 105926564B CN 201610266241 A CN201610266241 A CN 201610266241A CN 105926564 B CN105926564 B CN 105926564B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/08—Investigation of foundation soil in situ after finishing the foundation structure
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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)
Abstract
The invention discloses a kind of composite foundation loading testing methods, include the following steps: the site clearing (a)；(b) two-way cement mixing pile is chosen；(c) load detects；(d) two-way cement mixing pile analysis.The present invention carries out label to the two-way cement mixing pile of selection, prevents the repetition of two-way cement mixing pile load from detecting, and can be shortened construction period, reduces cost；The present invention finds out average value to the corresponding test data of pulverized limestone test point of two-way cement mixing pile, obtain the average load at two-way cement mixing pile, exclude the excessively high or too low influence of load that single ashes test point measures, obtained composite foundation load and real load deviation range are smaller, obtained data testing accuracy is high, with high reference value, so that cement mixing pile forms composite foundation together with stake week tidal land mud, to improve foundation bearing capacity；The present invention can improve the stability of detection device detection simultaneously, and load detection is applied widely.
Description
Technical field
The invention belongs to two-way Construction Techniques for Cement Mixing Pile fields, and in particular to a kind of composite foundation load detection side
Method.
Background technique
As investment on water conservancy in recent years and construction flourish, hundred million yuan or more easily of investment, at hydraulic engineering basis
It is more and more common using cement mixing pile to manage design and construction.The work efficiency of marine deep layer bidirectional stirring pile adds than unidirectional mixing pile
Times, bi-directional cement soil stake cement earth pile more unidirectional than same diameter is more closely knit, and bearing capacity is higher.
Two-way cement mixing pile, which is meant, makees curing agent using 42.5# ordinary cement, mechanical by the two-way stirring of patent,
Ground blotter operating platform is hereinafter, tidal land mud and cement hardener action of forced stirring are merged in original place, by curing agent and tidal land
The polymerization reaction that physics and chemistry are generated between mud, makes tidal land mud condense into the cement mixing method of some strength.Cement mixing pile
Composite foundation is formed together with stake week tidal land mud, to improve foundation bearing capacity, reduces settlement of foundation and lateral displacement amount.Pass through
The construction exploration of two-way cement mixing pile improves, mature and stable and successful application, embodies bi-directional cement soil mixing pile than unidirectional
Cement-soil stirring pile construction fast speed, pile quality are higher, and operation is more flexible and convenient, and security performance, adaptability are stronger.Sea
Upper 20m deep layer bi-directional cement soil mixing pile construction deeply below is mature, can guarantee soil cement quality and foundation stability,
It is that a kind of operation is simple, practicable construction method has larger promotional value.Two-way cement mixing pile after construction is needed
The detection work of composite foundation load is carried out, the bearing capacity of construction area is detected, judges the two-way cement mixing pile that construction is completed
Whether comply with standard.But the work of composite foundation load detection at present detects two-way cement mixing pile one by one, construction week
Phase is long, at high cost, and the data precision that the detection method taken obtains is low, and reference value is low.
Summary of the invention
Above-mentioned technical problem present in present invention aims to solve the prior art provides a kind of composite foundation load inspection
Survey method can be shortened construction period, reduce cost, while can improve detection stability, obtain flat at two-way cement mixing pile
Equal load, obtained composite foundation load and real load deviation range are smaller, and obtained data testing accuracy is high, have
High reference value.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
A kind of composite foundation loading testing method, it is characterised in that include the following steps:
(a) site clearing；
(b) it chooses two-way cement mixing pile: choosing the two-way cement mixing pile sum 1/3 that construction is completed and detected as load
Target, the stake bit distribution of selected two-way cement mixing pile are triangle, are then carried out to the two-way cement mixing pile of selection
Then 4~6 lime are arranged with pulverized limestone on the ground of the two-way cement mixing pile periphery detection of each of selection in 1~N of label
Then powder test point fastens safety line on the two-way cement mixing pile of selection；
(c) load detects: detecting first to No. 1 two-way cement mixing pile, in the ground of No. 1 two-way cement mixing pile
Upper mounting and fixing bracket, then support platform is fixed on fixed bracket, sliding support is then installed in support platform, then in cunning
Installation detecting device on dynamic bracket, then will test the pulverized limestone that device moves to No. 1 two-way cement mixing pile by sliding support
Test point with gripping means grips detection device, and ties down detection device with safety line, then carries out in pulverized limestone test point
Bearing plate, is vertically screwed into the following predetermined depth of soil layer, buried according to one screw pitch of every revolution tripping in, then by drilling
Hydraulic jack and counterforce device are installed in sliding support, then the dial gauge surveyed and read bearing plate displacement is installed, by load cell
Connecting line is connect with data display instrument and adjustment is correct, is then classified and is pressurizeed to bearing plate with hydraulic jack, read test number
According to then release clamping device and mobile sliding support, will test another lime that device moves to No. 1 two-way cement mixing pile
Powder test point, it then follows upper pulverized limestone test point same steps carry out load detection, and read corresponding test data, then
Average value is found out to the corresponding test data of pulverized limestone test point of No. 1 two-way cement mixing pile, average value is as No. 1 two-way water
Then the load of mud mixing pile removes the device that No. 1 two-way cement mixing pile periphery is used to detect work, finally double by No. 1
Safety rope on cement mixing pile is unlocked, and is completed No. 1 two-way cement mixing pile load and is detected work, then two-way to 2~No. N
Cement mixing pile carries out load detection work, the load detection work of 2~No. N two-way cement mixing piles and No. 1 two-way water respectively
The load detection work of mud mixing pile is consistent；
(d) two-way cement mixing pile analysis: the load data of 1~No. N two-way cement mixing pile is plotted in curve graph,
The difference between the load data of each two-way cement mixing pile is compared, finds out the two-way cement mixing pile of existing defects, then
Scene carries out overall structure detection to the two-way cement mixing pile, judges the quality problems of the two-way cement mixing pile, then presses
The two-way cement mixing pile is repaired according to regulation.
Further, the work of step (a) site clearing is specially that the construction waste on two-way cement mixing pile periphery carries out
It collects, and heap is carried out according to rubble waste, recovering discarded material, bazardous waste three categories to the construction waste being collected into
It puts, is then directed to construction waste, is arranged and supervised by construction site responsible person, each two-way cement mixing pile periphery heap
The rubble waste put is transported to designated place by truck and is handled, and what each two-way cement mixing pile periphery was stacked returns
Waste is received to be carried out being responsible for recycling, the bazardous waste conveying that each two-way cement mixing pile periphery is stacked by ministry of materials's material group
It is destroyed to designated place.
Further, it in the detection of step (c) load, before bearing plate to be vertically screwed into the following predetermined depth of soil layer, uses
Cloth wipes bearing plate, and cooperation hydraulic giant is cleaned in wiping process.
Further, with shoveling tool that the hack of the pulverized limestone test point bottom after pore-forming is clear in the detection of step (c) load
It removes, the soil leveling compacting that then plank destroys periphery.
Further, it in the detection of step (c) load, when bearing plate to be vertically screwed into soil layer following predetermined depth, keeps even
Speed screws in, and screws in 1~2mm/s of speed, continuous to screw in.
Further, in the detection of step (c) load, bearing plate is vertically screwed into the following predetermined depth of soil layer, need to be watched attentively
Bearing plate screws in situation, and the process problem is vertically screwed in for bearing plate and takes corresponding solution.
The present invention is by adopting the above-described technical solution, have the advantages that
1, the stake bit distribution of the two-way cement mixing pile selected by the present invention is triangle, 1/3 two-way water selected in this way
The load detection of mud mixing pile represents the load detection of all two-way cement mixing piles, and to the two-way cement mixing pile of selection
Label is carried out, prevents the repetition of two-way cement mixing pile load from detecting, can be shortened construction period, reduces cost；
2, the present invention is arranged 4~6 with pulverized limestone on the ground of the two-way cement mixing pile periphery detection of each of selection
Pulverized limestone test point, and load detection is carried out to all pulverized limestone test points of the two-way cement mixing pile, and to the two-way water
The corresponding test data of pulverized limestone test point of mud mixing pile finds out average value, load of the average value as the two-way cement mixing pile
Lotus, the average load at two-way cement mixing pile available in this way, exclude load that single ashes test point measures it is excessively high or
The too low influence of person, obtained composite foundation load and real load deviation range are smaller, obtained data testing accuracy
Height has high reference value, compares the difference between the load data of each two-way cement mixing pile in this way, find out presence
The two-way cement mixing pile of defect, then scene carries out overall structure detection to the two-way cement mixing pile, judges the two-way water
Then the quality problems of mud mixing pile according to the rules repair the two-way cement mixing pile, so that cement mixing pile and stake
All tidal land mud forms composite foundation together, to improve foundation bearing capacity, reduces settlement of foundation and lateral displacement amount；
3, the present invention props up entire detection device by support platform when carrying out load detection to ashes test point
Support effect, then pass through the clamping action and safety line fastening effect of clamping device, the stability of detection device detection can be improved,
And slided in support platform by sliding support, ashes test point can be converted, without mounting and fixing bracket repeatedly,
Support platform and detection device accelerate detection speed；
4, in the detection of specific load, it is vertically screwed into the following predetermined depth of soil layer using bearing plate, uses hydraulic jack
Bearing plate is classified and is pressurizeed, read test data, obtained data testing accuracy is high, and load detection is applied widely；
5, after the load detection to each two-way cement mixing pile, the safety on two-way cement mixing pile need to will be set
Rope is unlocked, and the two-way cement mixing pile explanation of safety rope not set in this way has completed detection work, and the two-way of safety rope is arranged
Cement mixing pile does not complete detection work also, and person in overall is very clear, arranges construction personnel for field condition, accelerates detection
Job schedule.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is a kind of construction process figure of composite foundation loading testing method of the present invention；
Fig. 2 is the floor plan that two-way cement mixing pile is chosen in the present invention；
Fig. 3 is the structural schematic diagram of load detection construction in the present invention.
Specific embodiment
The scope of application of the invention: the stirring of ooze soil, the soft soil in land suitable for sea wall mixing pile depth less than 20m
Stake pile foundation construction, practical using two-way cement mixing pile driving construction, applicability is wide.
As shown in Figure 1 to Figure 3, a kind of composite foundation loading testing method, includes the following steps:
(a) site clearing: the construction waste on two-way 1 periphery of cement mixing pile is collected, and is applied to what is be collected into
Work waste is stacked according to rubble waste, recovering discarded material, bazardous waste three categories.Then discarded for construction
Object is arranged and is supervised by construction site responsible person.The rubble waste that each 1 periphery of two-way cement mixing pile is stacked passes through
Truck is transported to designated place and is handled；The recovering discarded material that each 1 periphery of two-way cement mixing pile is stacked is by ministry of materials
Material group carries out being responsible for recycling；The bazardous waste that each 1 periphery of two-way cement mixing pile is stacked is transported to designated place progress
It destroys.
(b) it chooses two-way cement mixing pile: choosing 1 sum 1/3 of two-way cement mixing pile that construction is completed and examined as load
Target is surveyed, the quantity chosen under normal circumstances should not be less than the 30% of total amount of pile.The stake position of selected two-way cement mixing pile 1
It is distributed as triangle, 1~N of label then is carried out to the two-way cement mixing pile 1 of selection, N is typically greater than 10 natural number.So
4~6 pulverized limestone test points 2 are set with pulverized limestone on the ground of two-way 1 periphery of the cement mixing pile detection of each of selection afterwards,
Then safety line 3 is fastened on the two-way cement mixing pile 1 of selection.
(c) load detects: detecting first to No. 1 two-way cement mixing pile, in the ground of No. 1 two-way cement mixing pile
Upper mounting and fixing bracket 4, then support platform 5 is fixed on fixed bracket 4, sliding support 6 is then installed in support platform 5,
The installation detecting device 7 on sliding support 6 again.Then device 7 will test by sliding support 6 and moves to No. 1 two-way cement mixing
The pulverized limestone test point 2 of stake clamps detection device 7 with clamping device 8, and ties down detection device 7 with safety line 3.
Then it drills in pulverized limestone test point 2, with shoveling tool by the broken of 2 bottom of pulverized limestone test point after pore-forming
Soil is removed, the soil leveling compacting that then plank destroys periphery.Bearing plate is vertically screwed into the following predetermined depth of soil layer, is being incited somebody to action
Bearing plate is vertically screwed into before the following predetermined depth of soil layer, is used cloth to wipe with and is wiped bearing plate, cooperates hydraulic giant to carry out in wiping process clear
It washes, in order to avoid soil is brought into casing.It buries according to one screw pitch of every revolution tripping in, bearing plate is vertically screwed into soil
Layer or less predetermined depth when, remain a constant speed screw-in, screws in 1~2mm/s of speed, continuous to screw in.Bearing plate is vertically screwed into soil
Layer or less in predetermined depth, bearing plate need to be watched attentively and screw in situation, the process problem is vertically screwed in for bearing plate and takes phase
The solution answered.
Then hydraulic jack and counterforce device are installed in sliding support 6, can be selected in appropriate situation corresponding sensor,
The tools such as amplifier, data acquisition device, record display device, readily available accurately data.Survey is installed again and reads bearing plate displacement
Dial gauge, load cell connecting line is connect with data display instrument and adjustment is correct.Then with hydraulic jack to pressure-bearing
Plate classification pressurization, read test data.When there are following situations for the moment, can terminate pressurization: 1, the soil around bearing plate is bright
Aobvious ground lateral extrusion；2, the hurried increase of settling amount；3, in pressure process, the interior rate of settling cannot reach stability criterion for 24 hours；4,
Settling amount and pressure-bearing board width or diameter ratio are greater than or equal to 0.06.
Then clamping device 8 and mobile sliding support 6 are unclamped, device 7 is will test and moves to the another of No. 1 two-way cement mixing pile
One pulverized limestone test point 2, it then follows 2 same steps of a upper pulverized limestone test point carry out load detection, and read corresponding survey
Data are tried, average value, average value then are found out to the corresponding test data of pulverized limestone test point 2 of No. 1 two-way cement mixing pile
As the load of No. 1 two-way cement mixing pile, then the device that No. 1 two-way cement mixing pile periphery is used to detect work is torn open
It removes, finally unlocks the safety rope on No. 1 two-way cement mixing pile, complete No. 1 two-way cement mixing pile load and detect work.
Then load detection work is carried out respectively to 2~No. N two-way cement mixing piles, 2~No. N two-way cement mixing piles
It is consistent with the detection work of the load of No. 1 two-way cement mixing pile that load detects work.
(d) two-way cement mixing pile analysis: the two-way cement mixing pile in report calculates bearing capacity using fitting process, by 1
The carrying force data of~No. N two-way cement mixing pile is plotted in curve graph, compares the bearing capacity of each two-way cement mixing pile
Difference between data finds out the two-way cement mixing pile of existing defects, and then scene carries out the two-way cement mixing pile whole
Body structure detection judges the quality problems of the two-way cement mixing pile, and two-way cement mixing pile is divided into four major class, main point
For 1, flawless full pile；2, there is slight defect, but have substantially no effect on the stake of former design pile structural strength；3, there is obvious lack
It falls into, influences the stake (can partially utilize or the use that degrades) of former design pile structural strength；4, there is the stake (useless stake) of major defect.So
The two-way cement mixing pile is repaired according to the rules afterwards.Load testing goal mainly carries out quality to two-way cement mixing pile
GeneraI investigation checks pile body integrity, if with the presence of broken pile, presss from both sides the defects of mud, isolation, necking down and basic fixed position.
In actually detected, the preloading of Loading Test of Composite Foundation scene examines 52 two-way cement mixing piles, examines knot
Fruit shows, wherein tableland bearing capacity is hoped to be greater than 100kPa, the lookout angle city square, and the Regional carrying capacity of Macau Fisherman's Wharf three are greater than
85kPa, indices are all satisfied design requirement, and the two-way cement mixing pile completed of constructing is all qualified.
The stake bit distribution of two-way cement mixing pile selected by the present invention is triangle, 1/3 two-way cement selected in this way
Mixing pile load detection represent all two-way cement mixing piles load detection, and to the two-way cement mixing pile of selection into
Line label prevents the repetition of two-way cement mixing pile load from detecting, and can be shortened construction period, reduces cost.The present invention is choosing
Each of 4~6 pulverized limestone test points are set with pulverized limestone on the ground of two-way cement mixing pile periphery detection, and it is two-way to this
All pulverized limestone test points of cement mixing pile carry out load detection, and to the pulverized limestone test point pair of the two-way cement mixing pile
The test data answered finds out average value, load of the average value as the two-way cement mixing pile, two-way cement available in this way
Average load at mixing pile excludes the excessively high or too low influence of load that single ashes test point measures, obtained multiple
It closes ground load and real load deviation range is smaller, obtained data testing accuracy is high, there is high reference value, this
Sample compares the difference between the load data of each two-way cement mixing pile, finds out the two-way cement mixing pile of existing defects, so
Scene carries out overall structure detection to the two-way cement mixing pile afterwards, judges the quality problems of the two-way cement mixing pile, then
The two-way cement mixing pile is repaired according to the rules, so that cement mixing pile forms compoundly together with stake week tidal land mud
Base reduces settlement of foundation and lateral displacement amount to improve foundation bearing capacity.The present invention is carrying out load inspection to ashes test point
When survey, effect is supported to entire detection device by support platform, then pass through the clamping action and safety rope of clamping device
Rope fastening effect can improve the stability of detection device detection, and be slided in support platform by sliding support, can be to ash
Powder test point is converted, and without mounting and fixing bracket, support platform and detection device repeatedly, accelerates detection speed.Specific
In load detection, it is vertically screwed into the following predetermined depth of soil layer using bearing plate, bearing plate is classified with hydraulic jack and is pressurizeed,
Read test data, obtained data testing accuracy is high, and load detection is applied widely.It is stirred to each two-way cement
After the load detection for mixing stake, the safety rope being arranged on two-way cement mixing pile need to be unlocked, pair of safety rope not set in this way
Detection work has been completed to cement mixing pile explanation, the two-way cement mixing pile that safety rope is arranged does not complete detection work also,
Person in overall is very clear, arranges construction personnel for field condition, accelerates detection job schedule.
Load detects points for attention:
1, load detection is carried out by the unit with coherent detection qualification and instructs work.
2, load detection is related to equipment, accuracy of instrument is met the requirements and installation is carried out in accordance with regulations, removes.
3, testing crew enters construction site safe wearing cap and other necessary safety protection facilities.
4, it is operated in strict accordance with relevant testing regulations, forbids violation operation.
5, site operation safety technique for using electricity regulation and equipment safety operating instruction are strictly observed.
The above is only specific embodiments of the present invention, but technical characteristic of the invention is not limited thereto.It is any with this hair
Based on bright, to solve essentially identical technical problem, essentially identical technical effect is realized, made simple change, etc.
With replacement or modification etc., all it is covered by among protection scope of the present invention.
Claims (6)
1. a kind of composite foundation loading testing method, it is characterised in that include the following steps:
(a) site clearing；
(b) it chooses two-way cement mixing pile: choosing the two-way cement mixing pile sum 1/3 that construction is completed and detect mesh as load
The stake bit distribution of mark, selected two-way cement mixing pile is triangle, is then marked to the two-way cement mixing pile of selection
Then 4~6 pulverized limestones are arranged with pulverized limestone on the ground of the two-way cement mixing pile periphery detection of each of selection in number 1~N
Then test point fastens safety line on the two-way cement mixing pile of selection；
(c) load detects: detecting to No. 1 two-way cement mixing pile, pacifies first on the ground of No. 1 two-way cement mixing pile
Fixed bracket is filled, then fixes support platform on fixed bracket, sliding support is then installed in support platform, then in sliding branch
Installation detecting device on frame then will test the pulverized limestone detection that device moves to No. 1 two-way cement mixing pile by sliding support
Point with gripping means grips detection device, and ties down detection device with safety line, is then bored in pulverized limestone test point
Bearing plate is vertically screwed into the following predetermined depth of soil layer by hole, is buried according to one screw pitch of every revolution tripping in, is then existed
Sliding support installs hydraulic jack and counterforce device, then installs the dial gauge surveyed and read bearing plate displacement, and load cell is connected
Wiring is connect with data display instrument and adjustment is correct, is then classified and is pressurizeed to bearing plate with hydraulic jack, read test data,
Then clamping device and mobile sliding support are unclamped, will test another pulverized limestone that device moves to No. 1 two-way cement mixing pile
Test point, it then follows upper pulverized limestone test point same steps carry out load detection, and read corresponding test data, then right
The corresponding test data of pulverized limestone test point of No. 1 two-way cement mixing pile finds out average value, and average value is as No. 1 two-way cement
Then the load of mixing pile removes the device that No. 1 two-way cement mixing pile periphery is used to detect work, finally two-way by No. 1
Safety rope on cement mixing pile is unlocked, and is completed No. 1 two-way cement mixing pile load and is detected work, then to 2~No. N two-way water
Mud mixing pile carries out load detection work, the load detection work of 2~No. N two-way cement mixing piles and No. 1 two-way cement respectively
The load detection work of mixing pile is consistent；
(d) two-way cement mixing pile analysis: the load data of 1~No. N two-way cement mixing pile is plotted in curve graph, is compared
Difference between the load data of each two-way cement mixing pile finds out the two-way cement mixing pile of existing defects, then live
Overall structure detection is carried out to the two-way cement mixing pile, the quality problems of the two-way cement mixing pile are judged, then according to rule
It is fixed that the two-way cement mixing pile is repaired.
2. a kind of composite foundation loading testing method according to claim 1, it is characterised in that: step (a) site clearing
Work is specially that construction waste on two-way cement mixing pile periphery is collected, and to the construction waste being collected into according to
Rubble waste, recovering discarded material, bazardous waste three categories are stacked, and construction waste is then directed to, existing by constructing
Field responsible person arranges and supervises, and the rubble waste that each two-way cement mixing pile periphery is stacked is transported to finger by truck
Determine place to be handled, the recovering discarded material that each two-way cement mixing pile periphery is stacked is carried out responsible by ministry of materials's material group
Recycling, the bazardous waste that each two-way cement mixing pile periphery is stacked are transported to designated place and are destroyed.
3. a kind of composite foundation loading testing method according to claim 1, it is characterised in that: the detection of step (c) load
In, it before bearing plate to be vertically screwed into the following predetermined depth of soil layer, uses cloth to wipe with and wipes bearing plate, cooperate hydraulic giant in wiping process
It is cleaned.
4. a kind of composite foundation loading testing method according to claim 1, it is characterised in that: the detection of step (c) load
In, the hack of the pulverized limestone test point bottom after pore-forming is removed with shoveling tool, the soil that then plank destroys periphery flattens
Compacting.
5. a kind of composite foundation loading testing method according to claim 1, it is characterised in that: the detection of step (c) load
In, when bearing plate to be vertically screwed into soil layer following predetermined depth, remain a constant speed screw-in, screws in 1~2mm/s of speed, continuous to revolve
Enter.
6. a kind of composite foundation loading testing method according to claim 1, it is characterised in that: the detection of step (c) load
In, bearing plate is vertically screwed into the following predetermined depth of soil layer, bearing plate need to be watched attentively and screw in situation, vertically revolved for bearing plate
Enter the process problem and takes corresponding solution.
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| SU1694775A1 (en) * | 1988-12-27 | 1991-11-30 | Войсковая Часть 52953 | Device for testing soils by static loads |
| CN101487273B (en) * | 2009-02-26 | 2010-08-04 | 建研地基基础工程有限责任公司 | Method and equipment for determining bearing capacity of existing building foundation |
| CN201762737U (en) * | 2010-09-07 | 2011-03-16 | 石旭东 | Shallow plate loading test modified device |
| CN102493500B (en) * | 2011-12-06 | 2013-10-09 | 湖北省电力勘测设计院 | Foundation base model test device capable of bidirectional loading |
| CN202830907U (en) * | 2012-10-16 | 2013-03-27 | 丁鉴群 | Improved static probing device |
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