CN110196992A - Onion weathering body feasibility determination method, pile foundation location determining method and device - Google Patents
Onion weathering body feasibility determination method, pile foundation location determining method and device Download PDFInfo
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Abstract
The invention discloses a kind of onion weathering body feasibility determination method, pile foundation location determining method and devices, the thickness of onion weathering body is measured, obtain the first judgement difference, determine difference by first, enable operating personnel effectively, the volume of accurate judgement onion weathering body whether meet pile foundation construction condition.Meanwhile in addition to the volume of onion weathering body determines, it is also necessary to determine the stress of onion weathering body.There are two types of the stress of onion weathering body determines, first is that onion weathering body determines the support stress of pile foundation and overlying burden；Second is that stress determines on ground as a whole for onion weathering body, pile foundation and overlying burden.Therefore, determine that difference and third determine difference by second, operating personnel is enabled effectively and accurately to determine the force-bearing situation of onion weathering body.Determine that difference, the second judgement difference and third determine difference in conjunction with first, operating personnel is integrated, effective, accurate judgement comprehensively is carried out to onion weathering body.
Description
Technical field
The present invention relates to technical field of buildings, more particularly to a kind of onion weathering body feasibility determination method, pile foundation position
Set determining method and device.
Background technique
Granite is a kind of rock with characteristics such as great hardness, high compression strength and extremely low water absorption rates,
It is widely distributed in China, is most important base rock especially in South China.However, granite by tectonic stress or itself
Factor effect, the development of rock mass inside have a large amount of joints or the relevant crack of tomography.By South China's humidity rainy climate environment
It influences, the crack median year ponding or more moist in granite exacerbates the slacking of granite and formed a large amount of
Isolated existing weathered granite restite.
The onion weathering body and weak two class geologic body of the weathering soil body that weathered granite restite distributed area possesses, by the two
There are huge cost variances when respectively as pile-base supporting layer.In weathered granite distributed area, granite weakness weathering crust
Thickness is usually very big, and the weathering crust of this huge thickness can be used as the supporting course of friction pile, but builds this pile foundation because needing foot
Enough buried depths provide frictional force, and the construction of this buried pile foundation certainly will be along with the increase of construction cost.However, in shallow embedding wind
Change that there is also another feasible pile foundation construction schemes in granite restite distributed area, i.e., it is onion weathering is stereoscopic can to hold
The solid rock of power layer builds " end-bearing pile " pile foundation, and the save the cost of this kind of scheme energy high degree simultaneously helps the peace for promoting engineering
Full property and durability.Make hard rock supporting course using weathered granite restite, the huge weathered granite that will be needed guiding through originally
Restite, which is used, builds up similar " expanding pile foundation ".
In weathered granite restite distributed area, and not all onion weathering body is suitable for the pile foundation as end-bearing pile,
Therefore, it before pile foundation position determines, needs to carry out feasibility assessment to onion weathering body.However, conventional method is difficult effectively
And accurately onion weathering body is assessed, to seriously affect safety and the durability of the engineering construction.
Summary of the invention
Based on this, it is necessary to a kind of onion weathering body feasibility determination method, pile foundation location determining method and device are provided,
Can effectively and accurately onion weathering body is determined.
Its technical solution is as follows:
A kind of onion weathering body feasibility determination method includes the following steps: to obtain the ball in weathered granite distributed area
The thickness h value of shape weathering body obtains the maximum gauge value h of the thickness h value according to acquired thickness h valuemax, by described in most
Big thickness value hmaxRatio is sought with the diameter D of pile foundation, and gained ratio is subtracted each other with default ratio m, obtains the first judgement difference；It obtains
Take frictional resistance F suffered by the pile foundation1And the support force F that the onion weathering body provides the pile foundation2, by the frictional resistance
F1With support force F2The sum of with the first overlying burden power F suffered on the onion weathering bodyLotus, 1Subtract each other, show that the second judgement is poor
Value；Obtain frictional resistance F suffered by the pile foundation1, frictional resistance F suffered by the onion weathering body3And onion weathering body bottom
Suffered support force F4, by the frictional resistance F1, the frictional resistance F3And the support force F4The sum of be located at the onion weathering body
Second overlying burden power F suffered by the rock-soil layer of bottomLotus, 2Subtract each other, show that third determines difference；It is poor to determine according to described first
Value, described second determine that difference and the third determine difference, determine the feasibility that pile foundation is built on the onion weathering body.
Above-mentioned onion weathering body feasibility determination method, is measured the thickness of onion weathering body, and obtains a large amount of
Onion weathering body thickness h value, since onion weathering body is in or approximate in ball in weathered granite restite distributed area
Shape body, therefore, the maximum gauge value h of onion weathering bodymaxThen level off to the diameter of onion weathering body.Most by onion weathering body
Big thickness value hmaxSubtract each other with the ratio of the diameter D of pile foundation with default ratio m, obtain the first judgement difference, it is poor to determine by first
Value, enable operating personnel effectively, the volume of accurate judgement onion weathering body whether meet pile foundation construction condition.Meanwhile it removing
The volume of onion weathering body determines, it is also necessary to determine the stress of onion weathering body.The stress of onion weathering body determines
There are two types of, first is that onion weathering body determines the support stress of pile foundation and overlying burden；Second is that onion weathering body, pile foundation and on cover
Stress determines load on ground as a whole.Therefore, by obtaining frictional resistance F suffered by pile foundation1And onion weathering body
The support force F that pile foundation is provided2, by frictional resistance F1With support force F2The sum of with the first overlying burden power FLotus, 1Subtract each other, obtains second
Determine difference；Then by obtaining frictional resistance F1, frictional resistance F3And support force F4The sum of, and with the second overlying burden power FLotus, 2Phase
Subtract, show that third determines difference.In this way, determining that difference and third determine difference by second, enable operating personnel effective
And the accurate force-bearing situation for determining onion weathering body.Determine that difference, second determine that difference and third determine difference in conjunction with first, makes
Obtaining operating personnel can integrate, comprehensively effectively, accurately determine to onion weathering body, effectively engineering construction be avoided to build
Safety and the durability of engineering construction are seriously affected on underproof onion weathering body.
It is described in one of the embodiments, to determine that difference, described second determine difference and described the according to described first
Three determine differences, if determine on the onion weathering body build pile foundation feasibility the step of include: it is described first determine difference,
When the second judgement difference and the third determine that difference is all larger than 0, determine to meet pile foundation construction on the onion weathering body
Condition.
It is described in one of the embodiments, to determine that difference, described second determine difference and described the according to described first
Three determine differences, if determine on the onion weathering body build pile foundation feasibility the step of include: it is described first determine difference,
When the second judgement difference and the third determine at least one in difference less than 0, determine to be discontented on the onion weathering body
Sufficient pile foundation construction condition.
The thickness h value for obtaining the onion weathering body in weathered granite distributed area in one of the embodiments,
Step includes: to draw a circle to approve the onion weathering body in the water on weathered granite restite distributed area surface by the first detecting devices
Flat view field；It drills to the onion weathering body in the floor projection region；After drilling, pass through the second detection
The depth of equipment, upper surface and lower surface to the onion weathering body detects, and obtains with the weathered granite point
The upper surface depth h of the onion weathering body on the basis of the surface Bu QuOnWith lower surface depth hUnder；By the lower surface depth hUnder
With the upper surface depth hOnSubtract each other, the thickness h value of the gained onion weathering body.
First detecting devices includes magnetic exploring equipment, geologic radar detection equipment, again in one of the embodiments,
At least one of power exploring equipment, seismic exploration equipment and high-density resistivity exploring equipment equipment.
Second detecting devices includes single pore sound wave exploratory shaft sinking measurement equipment, across hole electromagnetism in one of the embodiments,
At least one of wave CT detecting devices, across hole resistivity CT detecting devices and across hole seismic tomography prospecting equipment equipment.
Frictional resistance F suffered by the pile foundation in one of the embodiments,1, frictional resistance F suffered by the onion weathering body3
And support force F suffered by onion weathering body bottom4The step of include: that onion weathering body week is obtained by in-situ test
The parameter of side rock-soil layer；Using the parameter of the periphery rock-soil layer, frictional resistance F suffered by the pile foundation is calculated1, it is described spherical
Frictional resistance F suffered by weathering body3And support force F suffered by onion weathering body bottom4。
The first overlying burden power F in one of the embodiments,Lotus, 1It is normal including structures self gravity, structures
Work the load gravity of receiving and the gravity of pile foundation itself.
The second overlying burden power F in one of the embodiments,Lotus, 2It is normal including structures self gravity, structures
Work the load gravity of receiving, the gravity and onion weathering body self gravity of pile foundation itself.
A kind of pile foundation location determining method is sentenced using onion weathering body feasibility described in claim any of the above one
Determine method, further include following steps: obtaining the three-dimensional dimension of the onion weathering body, constructs the three-dimensional mould of the onion weathering body
Type；The density for obtaining the onion weathering body, calculates the quality of the threedimensional model；In the quality for determining the threedimensional model
The heart, and the mass centre is projected to the surface of weathered granite restite distributed area, according to the mass centre
Projection, determines the installation location of the pile foundation.
Above-mentioned pile foundation location determining method, the onion weathering body feasibility determination method more than, effectively accurately sentences
Make whether onion weathering body meets construction pile foundation requirement.When determining that onion weathering body meets construction pile foundation and requires, need pair
The position of the pile foundation is precisely determined, to guarantee that engineering construction is more stable, reliable.It is three-dimensional by the onion weathering body of acquisition
Size carries out three-dimensional modeling；Again by obtaining the density of onion weathering body, the Mass Distribution of onion weathering body is calculated, and really
The mass centre for recognizing onion weathering body throws the mass centre of acquisition on weathered granite restite distributed area surface
Shadow determines the installation location of pile foundation according to the projection of mass centre, so that the structural strength of engineering construction effectively improves.
Meanwhile by the determination method, is conducive to the installation location that operating personnel effectively, quickly determines pile foundation, greatly improves engineering
The construction efficiency of building.
The three-dimensional dimension using the onion weathering body in one of the embodiments, constructs the onion weathering
The step of threedimensional model of body includes: to draw a circle to approve the equivalent cross-section on the onion weathering body by the first detecting devices；Pass through
Two detecting devices obtain depth of the equivalent cross-section of the onion weathering body in weathered granite remaining distribution area.
First detecting devices includes magnetic exploring equipment, geologic radar detection equipment, again in one of the embodiments,
At least one of power exploring equipment, seismic exploration equipment and high-density resistivity exploring equipment equipment；And/or second spy
Measurement equipment include single pore sound wave exploratory shaft sinking measurement equipment, across hole Electromagnetic CT detecting devices, across hole resistivity CT detecting devices and across
At least one of hole seismic tomography prospecting equipment equipment.
The projection according to the mass centre in one of the embodiments, determines the installation location of the pile foundation
If the step of when to include: the pile foundation be one, the installation location of the pile foundation is the mass centre on weathering flower hilllock
Rock restite distributed area projects on surface.
A kind of pile foundation determining device, described device include: input module, for inputting the three-dimensional ruler of the onion weathering body
The density data of very little data and the onion weathering body；At module, for the three-dimensional dimension number according to the onion weathering body
According to building threedimensional model；Computing module calculates the onion weathering body for the density data according to the onion weathering body
Quality；And display module, for showing the quality of the threedimensional model Yu the onion weathering body.
Pile foundation determining device in one of the embodiments, further include: correction module, for the onion weathering body
Three-dimensional dimension data are modified；Evaluation module, the feasibility for determining to build pile foundation on the onion weathering body.
A kind of computer equipment, including memory and processor, the memory are stored with computer program, the processing
The step of device realizes one the method for claim any of the above when executing the computer program.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
The step of method described in realizing claim any of the above one when row.
Detailed description of the invention
Fig. 1 is onion weathering body feasibility determination method flow chart described in one embodiment of the invention；
Fig. 2 is acquisition onion weathering body thickness specific flow chart described in one embodiment of the invention；
Fig. 3 is acquisition pile foundation frictional resistance, onion weathering body frictional resistance and onion weathering body described in one embodiment of the invention
Bottom support force specific flow chart；
Fig. 4 is that the first judgement difference, the second judgement difference and third described in one embodiment of the invention determine that difference is specific
Determination method flow chart；
Fig. 5 is pile foundation location determining method flow chart described in one embodiment of the invention；
Fig. 6 is distribution of force schematic diagram after the construction of pile foundation described in one embodiment of the invention；
Fig. 7 is pile foundation position determining means schematic diagram described in one embodiment of the invention；
Fig. 8 is computer equipment structural schematic diagram described in one embodiment of the invention.
Description of symbols:
100, pile foundation, 200, onion weathering body, 300, ground, 400, structures, 500, input module, 510, at artwork
Block, 520, computing module, 530, correction module, 540, evaluation module, 550, display module.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with attached drawing and specific embodiment party
Formula, the present invention is further described in detail.It should be understood that the specific embodiments described herein are only to solve
The present invention is released, and the scope of protection of the present invention is not limited.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Heretofore described " first ", " second " do not represent specific quantity and sequence, are only used for the differentiation of title.
In one embodiment, Fig. 1 and Fig. 6, a kind of onion weathering body feasibility determination method are please referred to, including is walked as follows
It is rapid:
S10, obtain weathered granite distributed area in onion weathering body 200 thickness h value, according to acquired thickness h
Value obtains the maximum gauge value h of thickness h valuemax, by maximum gauge value hmaxRatio is sought with the diameter D of pile foundation 100, and by gained ratio
Value is subtracted each other with default ratio m, obtains the first judgement difference；
S20, frictional resistance F suffered by pile foundation 100 is obtained1And the support force F that onion weathering body 200 provides pile foundation 1002, will
Frictional resistance F1With support force F2The sum of with the first overlying burden power F suffered on onion weathering body 200Lotus, 1Subtract each other, show that second sentences
Determine difference；
S30, frictional resistance F suffered by pile foundation 100 is obtained1, frictional resistance F suffered by onion weathering body 2003And onion weathering body
Support force F suffered by 200 bottoms4, by frictional resistance F1, frictional resistance F3And support force F4The sum of be located at onion weathering body 200 bottom
Second overlying burden power F suffered by 300 layers of groundLotus, 2Subtract each other, show that third determines difference；
S40, determine that difference, second determine that difference and third determine difference according to first, determine to build on onion weathering body 200
If the feasibility of pile foundation 100.
Above-mentioned onion weathering body feasibility determination method, is measured the thickness of onion weathering body 200, and obtains big
The thickness h value of the onion weathering body 200 of amount, be in weathered granite restite distributed area due to onion weathering body 200 or
Approximation is in orbicule, therefore, the maximum gauge value h of onion weathering body 200maxThen level off to the diameter of onion weathering body 200.It will
The maximum gauge value h of onion weathering body 200maxSubtract each other with the ratio of the diameter D of pile foundation 100 with default ratio m, obtains first and sentence
Determine difference, determine difference by first, enable operating personnel effectively, the volume of accurate judgement onion weathering body 200 whether
Meet 100 construction condition of pile foundation.Meanwhile in addition to the volume of onion weathering body 200 determines, it is also necessary to onion weathering body 200
Stress is determined.There are two types of the stress of onion weathering body 200 determines, first is that onion weathering body 200 is to pile foundation 100 and above covers lotus
The support stress of load determines；Second is that onion weathering body 200, pile foundation 100 and overlying burden as a whole on ground 300 by
Power determines.Therefore, by obtaining frictional resistance F suffered by pile foundation 1001And the support force that onion weathering body 200 provides pile foundation 100
F2, by frictional resistance F1With support force F2The sum of with the first overlying burden power FLotus, 1Subtract each other, obtains the second judgement difference；Then by obtaining
Take frictional resistance F1, frictional resistance F3And support force F4The sum of, and with the second overlying burden power FLotus, 2Subtract each other, show that third determines difference.
In this way, determining that difference and third determine difference by second, operating personnel is enabled effectively and accurately to determine onion weathering body
200 force-bearing situation.Determine that difference, second determine that difference and third determine difference in conjunction with first, enables operating personnel comprehensive
It closes, effective, accurate judgement comprehensively is carried out to onion weathering body 200, engineering construction is effectively avoided to build underproof spherical
Safety and the durability of engineering construction are seriously affected on weathering body 200.Wherein, the first overlying burden power FLotus, 1For spherical wind
Change loading force suffered on body 200, mainly includes 400 self gravity G of structures0, structures 400 work normally bear load
Gravity G1And the gravity G of pile foundation 100 itself2.Second overlying burden power FLotus, 2For 300 layers of institute of ground of 200 bottom of onion weathering body
The loading force received mainly includes 400 self gravity G of structures0, structures 400 work normally bear load gravity G1, pile foundation
100 itself gravity G2And 200 self gravity G of onion weathering body3.In addition, the overlying burden of the present embodiment is in pile foundation 100
Load on structures 400 and structures 400.
Optionally, the present embodiment does not limit obtaining for the first judgement difference, the second judgement difference and third judgement difference
Sequentially, it for example, first obtaining the first judgement difference, then obtains the second judgement difference, finally show that third determines difference；Or first
Second determines difference out, then obtains the first judgement difference, finally show that third determines difference；Or first show that third judgement is poor
Value, then obtain the second judgement difference, finally obtain the first judgement difference；Or first determine difference, second determine difference and
Third determines that difference obtains simultaneously.Certainly, effectively, quickly determine for the ease of operating personnel, when the first judgement difference, second
Determine difference and third determine to exist in difference one it is undesirable when, then be not necessarily to obtain other two difference, i.e.,
It can directly judge that the onion weathering body 200 is not suitable for the construction of pile foundation 100.For example, when operating personnel is to onion weathering body 200
When size is determined, first determines that difference is undesirable, and operating personnel is without obtaining pile foundation 100 and onion weathering body at this time
200 frictional resistance, in this way, greatly improving the judgement efficiency of onion weathering body 200.
Optionally, it presets ratio m to be configured according to actual production demand, for example, default ratio m is 3~10.Specifically exist
In the present embodiment, presetting ratio m is 5, it is, the maximum gauge h of onion weathering body 200maxWith 5 times of 100 diameter D of pile foundation
It is compared.
Further, Fig. 4 and Fig. 6 are please referred to, determines that difference, second determine that difference and third determine difference according to first,
If determine onion weathering body 200 on build pile foundation 100 feasibility S40 the step of include: first determine difference, second determine it is poor
When value and third determine that difference is all larger than 0, determine to meet 100 construction condition S41 of pile foundation on onion weathering body 200.It follows that
It is built in 100 feasibility decision process of pile foundation on onion weathering body 200, determines that difference, second determine difference and the when first
When three judgement differences are all larger than 0,200 maximum gauge value h of onion weathering bodymax> mD；Frictional resistance F1+ support force F2It is covered on > first
Load force FLotus, 1；Frictional resistance F1+ frictional resistance F3+ support force F4> the second overlying burden power FLotus, 2, so that overlying burden and pile foundation 100
The two collective effect meets checking computations and the overlying burden, pile foundation of " intensity, rigidity and stability " on onion weathering body 200
100,200 three's collective effect of onion weathering body is in 300 layers of the ground upper checking computations for meeting " intensity, rigidity and stability ".At this point,
Onion weathering body 200 in terms of size or in terms of stress regardless of all meeting the construction requirement of pile foundation 100, in this way, passing through the party
Method, enable maintenance personnel effectively, be accurately judged to 200 various aspects feasibility criterion of onion weathering body.
In one embodiment, determine that difference, second determine that difference and third determine difference according to first, determine spherical wind
If the step of changing the feasibility S40 for building pile foundation 100 on body 200 includes: that the first judgement difference, the second judgement difference and third are sentenced
When determining at least one in difference less than 0, determine to be unsatisfactory for 100 construction condition S42 of pile foundation on onion weathering body 200.It follows that
On onion weathering body 200 build 100 feasibility decision process of pile foundation in, as long as first determine difference, second determine difference and
When third determines at least one in difference less than 0,200 maximum gauge value h of onion weathering bodymax< mD；And/or frictional resistance F1+
Support force F2< the first overlying burden power FLotus, 1；And/or frictional resistance F1+ frictional resistance F3+ support force F4< the second overlying burden power FLotus, 2,
Onion weathering body 200 is then unsatisfactory for the construction requirement of pile foundation 100.It should be noted that in order to save the judgement time of operating personnel,
When first determines difference, second determines that difference and third determine to occur in difference one less than 0, operating personnel can be terminated pair
Other determine that difference is obtained, and directly determine that the onion weathering body 200 is not suitable for construction pile foundation 100.
Specifically, operating personnel's normal operation step are as follows: first obtain the onion weathering body 200 in weathered granite distributed area
Thickness h value the maximum gauge value h of thickness h value is obtained according to acquired thickness h valuemax, by maximum gauge value hmaxWith stake
The ratio of the diameter D of base 100 subtracts each other with default ratio m, obtains the first judgement difference, if the first judgement difference is less than 0, sentences
The fixed onion weathering body 200 is not suitable for construction pile foundation 100.If the first judgement difference is greater than 0, obtains and rub suffered by pile foundation 100
Resistance F1And the support force F that onion weathering body 200 provides pile foundation 1002, by frictional resistance F1With support force F2The sum of with spherical wind
Change the first overlying burden power F suffered on body 200Lotus, 1Subtract each other, obtains the second judgement difference, if the second judgement difference is less than 0,
Then determine that the onion weathering body 200 is not suitable for construction pile foundation 100.If the second judgement difference is greater than 0, obtain suffered by pile foundation 100
Frictional resistance F1, frictional resistance F suffered by onion weathering body 2003And support force F suffered by 200 bottom of onion weathering body4, by frictional resistance
F1, frictional resistance F3And support force F4The sum of be located at 300 layers of ground of 200 bottom of onion weathering body suffered by the second overlying burden
Power FLotus, 2Subtract each other, show that third determines difference, if third determines difference less than 0, determines that the onion weathering body 200 is not suitable for
Pile foundation 100 is built, if third determines that difference is greater than 0, determines that the onion weathering body 200 is suitble to construction pile foundation 100.
In one embodiment, Fig. 2 and Fig. 6 are please referred to, the onion weathering body 200 in weathered granite distributed area is obtained
The step of thickness h value S10 includes: to draw a circle to approve onion weathering body 200 by the first detecting devices and be distributed in weathered granite restite
The floor projection region S11 on area surface；Drilling S12 is carried out to the onion weathering body 200 in floor projection region；After drilling,
By the second detecting devices, the depth of upper surface and lower surface to onion weathering body 200 is detected, and is obtained with weathering flower
The upper surface depth h of onion weathering body 200 on the basis of the surface of the distributed area Gang YanOnWith lower surface depth hUnderS13；By lower surface depth
Spend hUnderWith upper surface depth hOnSubtract each other, the thickness h value S14 of gained onion weathering body 200.In this way, compared to a variety of explorations of tradition
Method is mutually coupled, and the present embodiment in an orderly manner detects onion weathering body 200, by detection setting so that operating personnel
The dimension information that can quickly, accurately obtain onion weathering body 200, further improves the construction efficiency of engineering construction.
Further, the first detecting devices include magnetic exploring equipment, geologic radar detection equipment, gravimetric prospecting equipment,
At least one of seismic exploration equipment and high-density resistivity exploring equipment equipment.After onion weathering body 200 and height weathering
300 layers of ground between there are biggish Geological Differences, therefore, the present embodiment utilizes onion weathering body 200 and periphery ground 300
Layer between nature difference onion weathering body 200 is accurately detected, for example, magnetism, conductivity, density, dielectric resilient and
Resistivity.
In one embodiment, the second detecting devices includes single pore sound wave exploratory shaft sinking measurement equipment, across hole Electromagnetic CT
(computed tomography) detecting devices, across hole resistivity CT (computed tomography) detecting devices and across hole
At least one of earthquake CT (computed tomography) detecting devices equipment.In this way, by the second detecting devices, accurately
Detect the thickness value of onion weathering body 200.
In one embodiment, Fig. 3 and Fig. 6 are please referred to, frictional resistance F suffered by pile foundation 1001, suffered by onion weathering body 200
Frictional resistance F3And support force F suffered by 200 bottom of onion weathering body4The step of S30 includes: to obtain spherical wind by in-situ test
Change the parameter S31 of 300 layers of 200 periphery ground of body；Using 300 layers of parameter of periphery ground, frictional resistance suffered by pile foundation 100 is calculated
Power F1, frictional resistance F suffered by onion weathering body 2003And support force F suffered by 200 bottom of onion weathering body4S32.Due to various regions
There are huge differences for 300 structure of ground, therefore, in frictional resistance F3And support force F suffered by 200 bottom of onion weathering body4Calculating process
In, it will usually it empirical comparisons table is established, by in-situ test, obtains 300 layers of ground of parameter, for example, 300 layers of ground contain
Water rate, compactness, coefficient of viscosity etc. calculate frictional resistance F according to 300 parameter of ground3And suffered by 200 bottom of onion weathering body
Support force F4Value.When without local experience, calculated using following calculation formula (1) and formula (2):
Qsk=u ∑ qsikli (1)
Qpk=α pskAp (2)
Wherein, QskTotal ultimate frictional resistance；100 perimeter of u- pile foundation；qsikThe stake estimated with static sounding specific penetration resistance value
The ultimate frictional resistance of 100 i-th layers of ground 300 of base；liThe thickness of 100 i-th layers of ground 300 of pile foundation；QpkTotal utmost lateral friction mark
Quasi- value；100 end viscous drag correction coefficient of α-pile foundation；pskStatic(al) specific penetration resistance standard value near 100 end of pile foundation；ApStake
100 end area of base.Specific operation can refer to building pile foundation 100 and calculate specification JGJ94-2008.It should be noted that this reality
The frictional resistance for applying example includes positive friction and negative friction, and since the determine object of the present embodiment is granite, intensity is larger, knot
Structure is also relatively stable, therefore it may only be necessary to consider positive friction.Meanwhile the in-situ test of the present embodiment is in the original institute of ground 300
The test that on the position at place or substantially 300 property of ground is carried out under state and stress condition in situ.
Further, by in-situ test, the step of obtaining the parameter S31 of 300 layers of 200 periphery ground of onion weathering body it
Afterwards further include: by engineering driller, obtain 200 periphery ground of onion weathering body, 300 sample, 300 sample of gained ground is carried out
Laboratory soil test.In this way, obtaining more accurate 300 performance parameter of ground, sentence to improve 200 feasibility of onion weathering body
Determine precision.Wherein, laboratory soil test be to provide for the basic engineering of building and construction tally with the actual situation it is all kinds of
The performance indicator of soil.
In one embodiment, the first overlying burden power FLotus, 1Including 400 self gravity of structures, the normal work of structures 400
Make the gravity of the load gravity born and pile foundation 100 itself.It, only need to be according to it follows that during obtaining the first judgement difference
Secondary 400 self gravity G of acquisition structures0, structures 400 work normally bear load gravity G1And the gravity of pile foundation 100 itself
G2?.
In one embodiment, the second overlying burden power FLotus, 2Including 400 self gravity of structures, the normal work of structures 400
Make the load gravity born, 200 self gravity of gravity and onion weathering body of pile foundation 100 itself.It follows that obtaining second
During determining difference, 400 self gravity G of structures only need to be successively obtained0, structures 400 work normally bear load weight
Power G1, pile foundation 100 itself gravity G2And 200 self gravity G of onion weathering body3?.Wherein, onion weathering body 200 itself weight
Power G3Measurement, the present embodiment detected by engineering drilling and engineering geophysics, obtains the density and three of onion weathering body 200
Size is tieed up, according to the gravity acceleration g (generally taking 9.8N/kg) of place region, calculates onion weathering body 200 itself weight
Power G3。
In one embodiment, Fig. 5 and Fig. 6 are please referred to, a kind of pile foundation location determining method uses claim to take up an official post
Onion weathering body feasibility determination method in embodiment of anticipating, further includes following steps:
S50, the three-dimensional dimension for obtaining onion weathering body 200 construct the threedimensional model of onion weathering body 200；
S60, the density for obtaining onion weathering body 200, calculate the quality of threedimensional model；
S70, the mass centre for determining threedimensional model, and mass centre is projected to weathered granite restite distributed area table
On face, according to the projection of mass centre, the installation location of pile foundation 100 is determined.
Above-mentioned pile foundation location determining method, the onion weathering body feasibility determination method more than, effectively accurately sentences
Make whether onion weathering body 200 meets the construction requirement of pile foundation 100.It is wanted when judgement onion weathering body 200 meets construction pile foundation 100
It when asking, needs precisely to determine the position of the pile foundation 100, to guarantee that engineering construction is more stable, reliable.Pass through acquisition
200 three-dimensional dimension of onion weathering body carries out three-dimensional modeling；Again by obtaining the density of onion weathering body 200, spherical wind is calculated
Change the Mass Distribution of body 200, and confirm the mass centre of onion weathering body 200, by the mass centre of acquisition on weathering flower hilllock
Rock restite distributed area surface is projected, and according to the projection of mass centre, the installation location of pile foundation 100 is determined, so that engineering
The structural strength of building effectively improves.Meanwhile by the determination method, be conducive to operating personnel effectively, quickly determine stake
The installation location of base 100 greatly improves the construction efficiency of engineering construction.
Specifically, during obtaining the density of onion weathering body 200, when 200 sample rate number of results of onion weathering body
Measure limited or different 200 sample room density value difference of onion weathering body it is little when, calculate 200 sample rate of onion weathering body
Density of the average value as onion weathering body 200；When different 200 sample room density value difference of onion weathering body are larger, according to
Lithology and density logging variation is spatially in even transition it is assumed that calculate the density fonction of onion weathering body 200, wherein close
The function that distribution function is density and 200 three-dimensional dimension of onion weathering body is spent, specific density fonction formula need to be according to reality
Depending on situation.
Further, using the three-dimensional dimension of onion weathering body 200, construct the threedimensional model S50's of onion weathering body 200
Step includes: to draw a circle to approve the equivalent cross-section S51 on onion weathering body 200 by the first detecting devices；By the second detecting devices,
Obtain depth S 52 of the equivalent cross-section of onion weathering body 200 in weathered granite remaining distribution area.It follows that in determination
During the three-dimensional dimension of onion weathering body 200, onion weathering body 200 is virtually separated into multiple equivalent cross-sections, and pass through
First detecting devices draws a circle to approve equivalent cross-section.Wherein, the equivalent parameters in equivalent cross-section may be set to the magnetic on the section
Property, conductivity, resistivity, dielectric resilient etc..Then, by the second detecting devices, the equivalence obtained on onion weathering body 200 is cut
Depth where face, spatial and modeling so as to complete onion weathering body 200.Meanwhile by the second detecting devices,
Model after foundation can be verified and be corrected, so that the threedimensional model of completion more levels off to practical onion weathering body 200.
Further, the first detecting devices include magnetic exploring equipment, geologic radar detection equipment, gravimetric prospecting equipment,
At least one of seismic exploration equipment and high-density resistivity exploring equipment equipment.
In one embodiment, the second detecting devices includes single pore sound wave exploratory shaft sinking measurement equipment, the detection of across hole Electromagnetic CT
At least one of equipment, across hole resistivity CT detecting devices and across hole seismic tomography prospecting equipment equipment.
In one embodiment, according to the projection of mass centre, the step of determining the installation location S70 of pile foundation 100, includes:
If pile foundation 100 is one, the installation location of pile foundation 100 is mass centre in weathered granite restite distributed area surface upslide
Shadow.It projects, is conducive on the surface of weathered granite restite distributed area in the mass centre in this way, building pile foundation 100
Improve the safety and stability of engineering construction.
In one embodiment, if pile foundation 100 is more than two, the installation locations of more than two pile foundations 100 with
Mass centre arranges centered on projecting on the surface of weathered granite restite distributed area.In this way, being conducive to improve engineering construction
Safety and stability.
In one embodiment, Fig. 6 and Fig. 7, a kind of pile foundation determining device are please referred to, device includes: input module 500,
For inputting the three-dimensional dimension data of onion weathering body 200 and the density data of onion weathering body 200；At module 510, it is used for
According to the three-dimensional dimension data of onion weathering body 200, threedimensional model is constructed；Computing module 520, for according to onion weathering body
200 density data calculates the quality of onion weathering body 200；And display module 550, for showing threedimensional model and spherical wind
Change the quality of body 200.
Above-mentioned pile foundation determining device, by input module 500, input the three-dimensional dimension of onion weathering body 200 with it is spherical
The density of weathering body 200；According to the density of the three-dimensional dimension of onion weathering body 200 and onion weathering body 200, by module
510, construct the threedimensional model of onion weathering body 200；Then, by computing module 520, the matter of onion weathering body 200 is calculated
Amount distribution, and determine the mass centre of onion weathering body 200.Finally, by display module 550, by the three of onion weathering body 200
Dimension module is shown with mass centre.In this way, the installation location of pile foundation 100 can quickly be determined by pile foundation determining device,
Greatly facilitate the work progress of operating personnel.
Further, pile foundation determining device further include: correction module 530, for the three-dimensional dimension to onion weathering body 200
Data are modified；Evaluation module 540, the feasibility for determining to build pile foundation 100 on onion weathering body 200.In this way, passing through
Correction module 530, so that the three-dimensional dimension data of onion weathering body 200 are more accurate.Meanwhile by evaluation module 540, it is convenient for
Operating personnel quickly determines the feasibility that pile foundation 100 is built on onion weathering body 200.
In one embodiment, a kind of computer equipment, including memory and processor, memory are stored with computer journey
Sequence, processor realize the feasible sex determination of onion weathering body in one embodiment of claim any of the above when executing computer program
The step of method.
Specifically, computer equipment is server, and internal structure can refer to Fig. 8, and computer equipment includes total by system
The controller of line connection, calculates and at figure, output device, data storage device and communication device man-machine interactive interface.
In one embodiment, a kind of computer readable storage medium is stored thereon with computer program, computer program
The step of onion weathering body feasibility determination method in one embodiment of claim any of the above is realized when being executed by processor.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of onion weathering body feasibility determination method, which comprises the steps of:
The thickness h value for obtaining the onion weathering body in weathered granite distributed area, according to acquired thickness h value, described in acquisition
The maximum gauge value h of thickness h valuemax, by the maximum gauge value hmaxRatio is sought with the diameter D of pile foundation, and by gained ratio and in advance
If ratio m subtracts each other, the first judgement difference is obtained；
Obtain frictional resistance F suffered by the pile foundation1And the support force F that the onion weathering body provides the pile foundation2, will be described
Frictional resistance F1With support force F2The sum of with the first overlying burden power F suffered on the onion weathering bodyLotus, 1Subtract each other, obtains second
Determine difference；
Obtain frictional resistance F suffered by the pile foundation1, frictional resistance F suffered by the onion weathering body3And onion weathering body bottom
Support force F suffered by portion4, by the frictional resistance F1, the frictional resistance F3And the support force F4The sum of be located at the onion weathering
Second overlying burden power F suffered by the rock-soil layer of body bottomLotus, 2Subtract each other, show that third determines difference；
Determine that difference, described second determine that difference and the third determine difference according to described first, determines the onion weathering
The feasibility of pile foundation is built on body.
2. onion weathering body feasibility determination method according to claim 1, which is characterized in that described according to described first
Determine that difference, described second determine that difference and the third determine difference, determine to build pile foundation on the onion weathering body can
The step of row includes:
If the first judgement difference, the second judgement difference and the third determine that difference is all larger than 0, the ball is determined
Meet pile foundation construction condition on shape weathering body.
3. onion weathering body feasibility determination method according to claim 1, which is characterized in that described according to described first
Determine that difference, described second determine that difference and the third determine difference, determine to build pile foundation on the onion weathering body can
The step of row includes:
If the first judgement difference, described second determine that difference and the third determine at least one in difference less than 0, sentence
Pile foundation construction condition is unsatisfactory on the fixed onion weathering body.
4. onion weathering body feasibility determination method according to claim 1, which is characterized in that acquisition weathering flower hilllock
The step of thickness h value of onion weathering body in rock distributed area includes:
By the first detecting devices, the onion weathering body is drawn a circle to approve in the floor projection on weathered granite restite distributed area surface
Region；
It drills to the onion weathering body in the floor projection region；
After drilling, by the second detecting devices, the depth of upper surface and lower surface to the onion weathering body is detected,
And obtain the upper surface depth h of the onion weathering body on the basis of the surface of the weathered granite distributed areaOnWith lower surface
Depth hUnder；
By the lower surface depth hUnderWith the upper surface depth hOnSubtract each other, obtains the thickness h value of the onion weathering body.
5. onion weathering body feasibility determination method according to claim 4, which is characterized in that first detecting devices
It is set including the exploration of magnetic exploring equipment, geologic radar detection equipment, gravimetric prospecting equipment, seismic exploration equipment and high-density resistivity
At least one of standby equipment；Alternatively, second detecting devices includes single pore sound wave exploratory shaft sinking measurement equipment, the spy of across hole Electromagnetic CT
At least one of measurement equipment, across hole resistivity CT detecting devices and across hole seismic tomography prospecting equipment equipment.
6. onion weathering body feasibility determination method according to claim 1, which is characterized in that rub suffered by the pile foundation
Resistance F1, frictional resistance F suffered by the onion weathering body3And support force F suffered by onion weathering body bottom4The step of include:
By in-situ test, the parameter of onion weathering body periphery rock-soil layer is obtained；
Using the parameter of the periphery rock-soil layer, frictional resistance F suffered by the pile foundation is calculated1, suffered by the onion weathering body
Frictional resistance F3And support force F suffered by onion weathering body bottom4。
7. onion weathering body feasibility determination method described in -6 any one according to claim 1, which is characterized in that described
One overlying burden power FLotus, 1The weight of the load gravity and pile foundation itself that bear is worked normally including structures self gravity, structures
Power；Alternatively, the second overlying burden power FLotus, 2Including structures self gravity, structures work normally bear load gravity,
The gravity and onion weathering body self gravity of pile foundation itself.
8. a kind of pile foundation location determining method, which is characterized in that using onion weathering body described in claim 1-7 any one
Feasibility determination method, further includes following steps:
The three-dimensional dimension for obtaining the onion weathering body constructs the threedimensional model of the onion weathering body；
The density for obtaining the onion weathering body, calculates the quality of the threedimensional model；
It determines the mass centre of the threedimensional model, and the mass centre is projected to the weathered granite restite and is distributed
On area surface, according to the projection of the mass centre, the installation location of the pile foundation is determined.
9. pile foundation location determining method according to claim 8, which is characterized in that described using the onion weathering body
Three-dimensional dimension, the step of constructing the threedimensional model of the onion weathering body include:
By the first detecting devices, the equivalent cross-section on the onion weathering body is drawn a circle to approve；
By the second detecting devices, the equivalent cross-section of the onion weathering body is obtained in weathered granite remaining distribution area
Depth.
10. a kind of pile foundation determining device characterized by comprising
Input module, for inputting the three-dimensional dimension data of onion weathering body and the density data of onion weathering body；
Threedimensional model is constructed for the three-dimensional dimension data according to the onion weathering body at module；
Computing module calculates the quality of the onion weathering body for the density data according to the onion weathering body；And
Display module, for showing the quality of the threedimensional model Yu the onion weathering body.
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| US6480790B1 (en) * | 1999-10-29 | 2002-11-12 | Exxonmobil Upstream Research Company | Process for constructing three-dimensional geologic models having adjustable geologic interfaces |
| CN105155502A (en) * | 2015-09-25 | 2015-12-16 | 青岛理工大学 | Measurement method of karst cave type foundation collapse risks |
| CN107476289A (en) * | 2017-07-31 | 2017-12-15 | 深圳市建筑设计研究总院有限公司 | A kind of construction method of In The Granite Area uplift pile |
| CN109374456A (en) * | 2018-09-03 | 2019-02-22 | 山东大学 | Suitable for tunnel surrounding quality grading and rate of decay discriminating gear and method |
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2019
- 2019-04-23 CN CN201910327387.4A patent/CN110196992B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| US6480790B1 (en) * | 1999-10-29 | 2002-11-12 | Exxonmobil Upstream Research Company | Process for constructing three-dimensional geologic models having adjustable geologic interfaces |
| CN105155502A (en) * | 2015-09-25 | 2015-12-16 | 青岛理工大学 | Measurement method of karst cave type foundation collapse risks |
| CN107476289A (en) * | 2017-07-31 | 2017-12-15 | 深圳市建筑设计研究总院有限公司 | A kind of construction method of In The Granite Area uplift pile |
| CN109374456A (en) * | 2018-09-03 | 2019-02-22 | 山东大学 | Suitable for tunnel surrounding quality grading and rate of decay discriminating gear and method |
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