CN206680981U - Foundation bearing capacity and side friction measurement apparatus - Google Patents
Foundation bearing capacity and side friction measurement apparatus Download PDFInfo
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- CN206680981U CN206680981U CN201720224254.0U CN201720224254U CN206680981U CN 206680981 U CN206680981 U CN 206680981U CN 201720224254 U CN201720224254 U CN 201720224254U CN 206680981 U CN206680981 U CN 206680981U
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- side friction
- bearing capacity
- fixedly connected
- measurement apparatus
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Abstract
The utility model discloses a kind of foundation bearing capacity and side friction measurement apparatus, including：Housing, it is the cylindrical of inner hollow, and the bottom-open of housing, the bottom of the side wall of housing has the conical surface；Bearing plate, it is truncated cone-shaped, and bearing plate is arranged on the bottom of housing, the diameter of the bottom of bearing plate is equal to the external diameter of housing, bearing plate is coaxially disposed with housing, and the side wall of bearing plate does not contact with the conical surface, and the height at the top of bearing plate is higher than the height of the bottom of the conical surface；Transmission rod, its bottom are fixedly connected with the center at the top of bearing plate；Pressure detecting instrument, it is arranged between the top of housing and transmission rod, and is fixedly connected respectively with the top of housing and transmission rod；Tension gauge, it is installed in the top of housing, and positioned at the top of housing；Force-transmitting pole, it is arranged vertically at the top of tension gauge.The utility model can obtain the preferable ultimate bearing capacity of foundation soil of property identical with actual ground situation and side friction value.
Description
Technical field
It the utility model is related to foundation soil property and determine field.More specifically, it the utility model is related to a kind of ground
Bearing capacity and side friction measurement apparatus.
Background technology
China region is wide, and engineering geological condition is more complicated, in Geotechnical Engineering standard, foundation bearing capacity and side
The problem of determination of frictional resistance is the important content of Foundation Design, and academic opinion difference is bigger in soil mechanics.Current one
As provide to determine foundation bearing capacity and side friction value according to specification, but rubbed using foundation bearing capacity determined by this method and side
Resistance Value is often relatively conservative, can not give full play to ground performance to a certain extent, structure design is relatively conservative, causes wave indirectly
Take.And know foundation bearing capacity limiting value for some requirement of engineering, and data is surveyed on ground or specification typically provides foundation bearing
The characteristic value of power, is multiplied by limiting value of the empirical coefficient as foundation bearing capacity on this basis, and the limit that such a method is drawn is held
Force value is carried often to have greater difference with practically base stage limit bearing capacity value.In terms of side friction determination, specification provides value often
Relatively guard, and side friction value size between given structure and the soil body, also seldom consider structural material to side friction
It is worth influenceing.Therefore, accurate foundation bearing capacity and side friction value how is obtained either to structure design or work
Journey construction is respectively provided with larger benefit.
Utility model content
The purpose of this utility model is to provide a kind of foundation bearing capacity and side friction measurement apparatus, with obtain with practically
The identical preferable ultimate bearing capacity of foundation soil of property of base situation and side friction value.
In order to realize according to these purposes of the present utility model and further advantage, there is provided a kind of foundation bearing capacity and side are rubbed
Resistance measurement apparatus, including：
Housing, it is the cylindrical of inner hollow, and vertically sets, and the bottom-open of the housing is described
The bottom of the side wall of housing has from its madial wall towards its lateral wall inclined conical surface gradually downward；
Bearing plate, it is the up-small and down-big truncated cone-shaped of diameter, and the bearing plate is arranged on the bottom of the housing, described to hold
The diameter of the bottom of pressing plate is equal to the external diameter of the housing, and the bearing plate is coaxially disposed with the housing, the bearing plate
Side wall does not contact with the conical surface, and the height at the top of the bearing plate is higher than the height of the bottom of the conical surface；
Transmission rod, it is vertically set, and the center of the bottom of the transmission rod and the top of the bearing plate is fixed
Connection；
Pressure detecting instrument, it is arranged between the top of the housing and the transmission rod, and respectively with the housing
Top is fixedly connected with the transmission rod；
Tension gauge, it is installed in the top of the housing, and positioned at the top of the housing；
Force-transmitting pole, it is arranged vertically at the top of the tension gauge.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, it is characterised in that also include：
Connecting rod, it is arranged vertically in the housing, the top of the connecting rod and the top of the housing
Center be fixedly connected, the bottom of the connecting rod is fixedly connected with the pressure detecting instrument, and the pressure detecting instrument passes through institute
Connecting rod is stated with being fixedly connected at the top of the housing；
Support bar, it is vertically set, the fixed company in center of the bottom of the support bar and the top of the housing
Connect, the top of the support bar is fixedly connected with the tension gauge, and the tension gauge passes through the support bar and institute
State and be fixedly connected at the top of housing.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, the transmission rod is by integrally formed
Upper and bottom section forms, and the upper part and the lower part are cylindrical, and are coaxially set with the housing respectively
Put, the diameter of the upper part is more than the diameter of the lower part, and the pressure detecting instrument and the top of the upper part are fixed
Connection.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, in addition to：
Stress transmission plate one, it is arranged between the pressure detecting instrument and the connecting rod, and respectively with the pressure
Detector is fixedly connected with the connecting rod, and the size of the cross section of the stress transmission plate one is more than the transversal of the connecting rod
The size in face.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, the stress transmission plate one and described
Connecting rod is cylindrical, and is coaxially disposed respectively with the housing.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, in addition to：
Stress transmission plate two, it is arranged between the support bar and the tension gauge, and respectively with the support
Bar is fixedly connected with the tension gauge, and the size of the cross section of the stress transmission plate two is more than the transversal of the support bar
The size in face.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, the stress transmission plate two and described
Support bar is cylindrical, and is coaxially disposed respectively with the housing.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, in addition to：
Stress transmission plate three, it is arranged between the tension gauge and the force-transmitting pole, and respectively with the stress
Detector is fixedly connected with the force-transmitting pole, and the size of the cross section of the stress transmission plate three is more than the transversal of the force-transmitting pole
The size in face.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, the stress transmission plate three and described
Force-transmitting pole is cylindrical, and is coaxially disposed respectively with the housing.
Preferably, in described foundation bearing capacity and side friction measurement apparatus, the side wall of the bearing plate with it is described
Rubber is filled between the conical surface.
The utility model comprises at least following beneficial effect：
The ultimate bearing capacity of foundation soil and side friction value obtained by the utility model can be preferable with actual ground situation
It coincide, and in terms of side friction determination, it is also considered that influence of the structural material to side friction value.
Accurate foundation bearing capacity and side friction value can be obtained by the utility model, to structure design and engineering construction
It is respectively provided with larger benefit.
The utility model can measure ultimate bearing capacity of foundation soil and side friction value simultaneously, and simple in construction, easy to use.
Further advantage, target and feature of the present utility model embody part by following explanation, and part will also pass through
Research of the present utility model and practice are understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is foundation bearing capacity described in the utility model and the structural representation of side friction measurement apparatus.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
It should be noted that in description of the present utility model, term " transverse direction ", " longitudinal direction ", " on ", " under ", " preceding ",
The orientation or position relationship of the instruction such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on
Orientation shown in the drawings or position relationship, are for only for ease of description the utility model and simplify and describe, and are not instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
Limitation of the present utility model.
As shown in figure 1, the utility model provides a kind of foundation bearing capacity and side friction measurement apparatus, including：
Housing 100 (i.e. side friction power transmission arm), it is the cylindrical of inner hollow, and vertically sets, institute
The bottom-open of housing 100 is stated, the bottom of the side wall of the housing 100 has from its madial wall towards its lateral wall gradually downward
The inclined conical surface 101；During actual use, when wanting to obtain the side friction between steel and the soil body, from steel construction as housing
100 materials；When wanting to obtain the side friction between concrete and the soil body, from armored concrete as the material of housing 100.
Bearing plate 110, it is the up-small and down-big truncated cone-shaped of diameter, and the bearing plate 110 is arranged on the bottom of the housing 100
Portion, the diameter of the bottom of the bearing plate 110 are equal to the external diameter of the housing 100, the bearing plate 110 and the housing 100
It is coaxially disposed, the side wall of the bearing plate 110 does not contact with the conical surface 101, and the height at the top of the bearing plate 110 is high
Height in the bottom of the conical surface 101；Barrier seam 102 is formed so between the conical surface 101 and bearing plate 110, by bearing plate
110 separate with housing 100 so that the transmission of power are not present between bearing plate 110 and housing 100, barrier seam 102 can use rigidity
The rubber elastomeric material filling small, compressibility is good, had both prevented soil layer from entering in barrier seam 102, and had made bearing plate 110 again vertical
Under upward counter-force effect, the power transmitted to housing 100 is smaller.
Transmission rod 120, it is vertically set, the bottom of the transmission rod 120 and the top of the bearing plate 110
Center is fixedly connected；
Pressure detecting instrument 130, it is arranged between the top of the housing 100 and the transmission rod 120, and respectively with institute
The top for stating housing 100 is fixedly connected with the transmission rod 120；Pressure detecting instrument 130 is that can detect pressure in the prior art
Instrument, it can only detect the power that transmission rod 120 is communicated up.
Tension gauge 140, it is installed in the top of the housing 100, and positioned at the top of the housing 100；Stress
Detector 140 is that can detect the instrument of tension and compression in the prior art, its can detect to its downward pulling force and to
On pressure.
Force-transmitting pole 150, it is arranged vertically at the top of the tension gauge 140.
The foundation bearing capacity and side friction measurement apparatus provided using this programme measures foundation bearing capacity, Anti-pressure side is rubbed
The method of resistance and pulling-resistant type side friction, comprises the following steps：
Step 1: required detection bearing capacity and side friction surface of stratum are flattened, bearing plate 110 is put in the horizontal direction
It is placed in the surface of stratum；
Step 2: using loading system straight down, power straight down is applied on force-transmitting pole 150, makes pressure-bearing
The ballast ground of plate 110 moves downward, and the soil body gives the counter-force of bearing plate 110 1 straight up, and counter-force straight up is by holding
Pressing plate 110 passes to transmission rod 120, and counter-force straight up is passed to pressure detecting instrument 130, pressure detecting by transmission rod 120
Instrument 130 records and detected the counter-force size straight up suffered by bearing plate 110, then by pressure detecting instrument 130 will vertically to
On counter-force pass to top and the tension gauge 140 of housing 100 successively, meanwhile, between the lateral wall and the soil body of housing 100
Anti-pressure side friction is produced, and Anti-pressure side friction is passed to by tension gauge 140, stress mornitoring by housing 100
Detected value on instrument 140 is the total load head acted on force-transmitting pole 150, with act on force-transmitting pole 150 straight down
Power increase, ground destroys, and now the detected value on pressure detecting instrument 130 is foundation bearing capacity limiting value, tension gauge
The difference of detected value on 140 and the detected value on pressure detecting instrument 130 is the Anti-pressure side friction acted on housing 100；
Step 3: after measurement apparatus buries certain depth, using loading system straight up, by power straight up
It is applied on force-transmitting pole 150, pulling-resistant type side friction is produced between the lateral wall and the soil body of housing 100, and will by housing 100
Pulling-resistant type side friction passes to tension gauge 140, and the detected value on tension gauge 140 is to act on housing 100
Pulling-resistant type side friction.
In described foundation bearing capacity and side friction measurement apparatus, in addition to：
Connecting rod 160, it is arranged vertically in the housing 100, top and the shell of the connecting rod 160
The center at the top of body 100 is fixedly connected, and the bottom of the connecting rod 160 is fixedly connected with the pressure detecting instrument 130, described
Pressure detecting instrument 130 is fixedly connected by the connecting rod 160 with the top of the housing 100；
Support bar 170, it is vertically set, in the top of the bottom of the support bar 170 and the housing 100
Centre is fixedly connected, and the top of the support bar 170 is fixedly connected with the tension gauge 140, and the tension gauge 140 is logical
The top that the support bar 170 is crossed with the housing 100 is fixedly connected.
The foundation bearing capacity and side friction measurement apparatus provided using this programme measures foundation bearing capacity, Anti-pressure side is rubbed
The method of resistance and pulling-resistant type side friction, comprises the following steps：
Step 1: required detection bearing capacity and side friction surface of stratum are flattened, bearing plate 110 is put in the horizontal direction
It is placed in the surface of stratum；
Step 2: using loading system straight down, power straight down is applied on force-transmitting pole 150, makes pressure-bearing
The ballast ground of plate 110 moves downward, and the soil body gives the counter-force of bearing plate 110 1 straight up, and counter-force straight up is by holding
Pressing plate 110 passes to transmission rod 120, and counter-force straight up is passed to pressure detecting instrument 130, pressure detecting by transmission rod 120
Instrument 130 records and detected the counter-force size straight up suffered by bearing plate 110, then by pressure detecting instrument 130 will vertically to
On counter-force pass to connecting rod 160, the top of housing 100, support bar 170 and tension gauge 140 successively, meanwhile, housing
Anti-pressure side friction is produced between 100 lateral wall and the soil body, and Anti-pressure side friction is delivered to by branch by housing 100
Strut 170, then Anti-pressure side friction is passed to by tension gauge 140 by support bar 170, on tension gauge 140
Detected value is the total load head acted on force-transmitting pole 150, with the increase of power straight down acted on force-transmitting pole 150, ground
Base destroys, and now the detected value on pressure detecting instrument 130 is foundation bearing capacity limiting value, the inspection on tension gauge 140
The difference of measured value and the detected value on pressure detecting instrument 130 is the Anti-pressure side friction acted on housing 100；
Step 3: after measurement apparatus buries certain depth, using loading system straight up, by power straight up
It is applied on force-transmitting pole 150, pulling-resistant type side friction is produced between the lateral wall and the soil body of housing 100, and will by housing 100
Pulling-resistant type side friction is delivered to support bar 170, then pulling-resistant type side friction is passed into tension gauge by support bar 170
140, the detected value on tension gauge 140 is the pulling-resistant type side friction acted on housing 100.
Unit area frictional resistance size between the soil body and housing 100, can be according to corresponding side friction value divided by housing
Contact area obtains between 100 and soil layer.
Because gravity suffered by each part on device is smaller compared to the value of foundation bearing capacity and side friction, can be neglected,
Detection have ignored the gravity of each part of device more than thus.
In described foundation bearing capacity and side friction measurement apparatus, the transmission rod 120 is by integrally formed upper part
Being formed with lower part, the upper part and the lower part are cylindrical, and are coaxially disposed respectively with the housing 100,
The diameter of the upper part is more than the diameter of the lower part, and the pressure detecting instrument 130 and the top of the upper part are fixed
Connection.Upper part is used to install pressure detecting instrument 130, and upper part is relatively large in diameter, and such lifting surface area is larger, can protect pressure
Detector 130, prevents it to be subject to crushing, and when upper part is thicker, can save the making material of lower part.
In described foundation bearing capacity and side friction measurement apparatus, in addition to：
Stress transmission plate 1, it is arranged between the pressure detecting instrument 130 and the connecting rod 160, and respectively with
The pressure detecting instrument 130 is fixedly connected with the connecting rod 160, and the size of the cross section of the stress transmission plate 1 is big
Size in the cross section of the connecting rod 160.I.e. pressure detecting instrument 130 is connected by stress transmission plate 1 and connecting rod 160
Connect, such lifting surface area is larger, can protect pressure detecting instrument 130, prevent it to be subject to crushing.
In described foundation bearing capacity and side friction measurement apparatus, the stress transmission plate 1 and the connecting rod
160 be cylindrical, and is coaxially disposed respectively with the housing 100.
In described foundation bearing capacity and side friction measurement apparatus, in addition to：
Stress transmission plate 2 190, it is arranged between the support bar 170 and the tension gauge 140, and respectively with
The support bar 170 is fixedly connected with the tension gauge 140, and the size of the cross section of the stress transmission plate 2 190 is big
Size in the cross section of the support bar 170.I.e. tension gauge 140 is connected by stress transmission plate 2 190 and support bar 170
Connect, such lifting surface area is larger, can protect tension gauge 140, prevent it to be subject to crushing.
In described foundation bearing capacity and side friction measurement apparatus, the stress transmission plate 2 190 and the support bar
170 be cylindrical, and is coaxially disposed respectively with the housing 100.
In described foundation bearing capacity and side friction measurement apparatus, in addition to：
Stress transmission plate 3 200, it is arranged between the tension gauge 140 and the force-transmitting pole 150, and respectively with
The tension gauge 140 is fixedly connected with the force-transmitting pole 150, and the size of the cross section of the stress transmission plate 3 200 is big
Size in the cross section of the force-transmitting pole 150.I.e. tension gauge 140 is connected by stress transmission plate 3 200 and force-transmitting pole 150
Connect, such lifting surface area is larger, can protect tension gauge 140, prevent it to be subject to crushing.
In described foundation bearing capacity and side friction measurement apparatus, the stress transmission plate 3 200 and the force-transmitting pole
150 be cylindrical, and is coaxially disposed respectively with the housing 100.
In described foundation bearing capacity and side friction measurement apparatus, the cone angle of the bearing plate 110 and the conical surface 101
Cone angle it is equal, the height of the height at the top of the bearing plate 110 less than the top of the conical surface 101.
In described foundation bearing capacity and side friction measurement apparatus, the side wall of the bearing plate 110 and the conical surface 101
Between be filled with rubber.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (10)
1. a kind of foundation bearing capacity and side friction measurement apparatus, it is characterised in that including：
Housing, it is the cylindrical of inner hollow, and vertically sets, the bottom-open of the housing, the housing
The bottom of side wall have from its madial wall towards its lateral wall inclined conical surface gradually downward；
Bearing plate, it is the up-small and down-big truncated cone-shaped of diameter, and the bearing plate is arranged on the bottom of the housing, the bearing plate
The diameter of bottom be equal to the external diameter of the housing, the bearing plate is coaxially disposed with the housing, the side wall of the bearing plate
Do not contacted with the conical surface, and the height at the top of the bearing plate is higher than the height of the bottom of the conical surface；
Transmission rod, it is vertically set, and the bottom of the transmission rod is fixedly connected with the center at the top of the bearing plate；
Pressure detecting instrument, it is arranged between the top of the housing and the transmission rod, and the top with the housing respectively
It is fixedly connected with the transmission rod；
Tension gauge, it is installed in the top of the housing, and positioned at the top of the housing；
Force-transmitting pole, it is arranged vertically at the top of the tension gauge.
2. foundation bearing capacity as claimed in claim 1 and side friction measurement apparatus, it is characterised in that also include：
Connecting rod, it is arranged vertically in the housing, in the top of the top of the connecting rod and the housing
Centre is fixedly connected, and the bottom of the connecting rod is fixedly connected with the pressure detecting instrument, and the pressure detecting instrument passes through the company
Extension bar at the top of the housing with being fixedly connected；
Support bar, it is vertically set, and the bottom of the support bar is fixedly connected with the center at the top of the housing, institute
The top for stating support bar is fixedly connected with the tension gauge, and the tension gauge passes through the support bar and the housing
Top be fixedly connected.
3. foundation bearing capacity as claimed in claim 1 and side friction measurement apparatus, it is characterised in that the transmission rod is by one
Body formed upper and bottom section composition, the upper part and the lower part are cylindrical, and respectively with the shell
Body is coaxially disposed, and the diameter of the upper part is more than the diameter of the lower part, the pressure detecting instrument and the upper part
Top is fixedly connected.
4. foundation bearing capacity as claimed in claim 2 and side friction measurement apparatus, it is characterised in that also include：
Stress transmission plate one, it is arranged between the pressure detecting instrument and the connecting rod, and respectively with the pressure detecting
Instrument is fixedly connected with the connecting rod, and the size of the cross section of the stress transmission plate one is more than the cross section of the connecting rod
Size.
5. foundation bearing capacity as claimed in claim 4 and side friction measurement apparatus, it is characterised in that the stress transmission plate
One and the connecting rod be cylindrical, and be coaxially disposed respectively with the housing.
6. foundation bearing capacity as claimed in claim 2 and side friction measurement apparatus, it is characterised in that also include：
Stress transmission plate two, it is arranged between the support bar and the tension gauge, and respectively with the support bar and
The tension gauge is fixedly connected, and the size of the cross section of the stress transmission plate two is more than the cross section of the support bar
Size.
7. foundation bearing capacity as claimed in claim 6 and side friction measurement apparatus, it is characterised in that the stress transmission plate
Two and the support bar be cylindrical, and be coaxially disposed respectively with the housing.
8. foundation bearing capacity as claimed in claim 1 and side friction measurement apparatus, it is characterised in that also include：
Stress transmission plate three, it is arranged between the tension gauge and the force-transmitting pole, and respectively with the stress mornitoring
Instrument is fixedly connected with the force-transmitting pole, and the size of the cross section of the stress transmission plate three is more than the cross section of the force-transmitting pole
Size.
9. foundation bearing capacity as claimed in claim 8 and side friction measurement apparatus, it is characterised in that the stress transmission plate
Three and the force-transmitting pole be cylindrical, and be coaxially disposed respectively with the housing.
10. foundation bearing capacity as claimed in claim 1 and side friction measurement apparatus, it is characterised in that the bearing plate
Rubber is filled between side wall and the conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720224254.0U CN206680981U (en) | 2017-03-08 | 2017-03-08 | Foundation bearing capacity and side friction measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720224254.0U CN206680981U (en) | 2017-03-08 | 2017-03-08 | Foundation bearing capacity and side friction measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206680981U true CN206680981U (en) | 2017-11-28 |
Family
ID=60392161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720224254.0U Active CN206680981U (en) | 2017-03-08 | 2017-03-08 | Foundation bearing capacity and side friction measurement apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206680981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906815A (en) * | 2017-03-08 | 2017-06-30 | 中交第二航务工程局有限公司 | Foundation bearing capacity and side friction measurement apparatus and its application method |
| CN109826250A (en) * | 2019-03-25 | 2019-05-31 | 武汉建诚工程技术有限公司 | A kind of foundation bearing force checking device and method |
-
2017
- 2017-03-08 CN CN201720224254.0U patent/CN206680981U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906815A (en) * | 2017-03-08 | 2017-06-30 | 中交第二航务工程局有限公司 | Foundation bearing capacity and side friction measurement apparatus and its application method |
| CN106906815B (en) * | 2017-03-08 | 2019-01-04 | 中交第二航务工程局有限公司 | Foundation bearing capacity and side friction measuring device and its application method |
| CN109826250A (en) * | 2019-03-25 | 2019-05-31 | 武汉建诚工程技术有限公司 | A kind of foundation bearing force checking device and method |
| CN109826250B (en) * | 2019-03-25 | 2021-04-09 | 武汉建诚工程技术有限公司 | Foundation bearing capacity detection device and method |
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