CN210827620U - Anti-force steel beam for pile foundation static load experiment instability prevention and automatic alarm - Google Patents
Anti-force steel beam for pile foundation static load experiment instability prevention and automatic alarm Download PDFInfo
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- CN210827620U CN210827620U CN201921727496.7U CN201921727496U CN210827620U CN 210827620 U CN210827620 U CN 210827620U CN 201921727496 U CN201921727496 U CN 201921727496U CN 210827620 U CN210827620 U CN 210827620U
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Abstract
The patent relates to the field of building pile foundation static load experiment detection, in particular to a counter-force steel beam for instability prevention and automatic alarm of pile foundation static load experiment, which comprises a beam frame, angle sensors, a control terminal, a jack and a strain gauge, wherein the left end and the right end of the beam are respectively provided with 1 angle sensor which deflects left and right; the number of the angle sensors for detecting the forward and backward deflection is 4, the number of the stiffening ribs at the left end and the right end of the beam is 2 respectively, and the 2 angle sensors for detecting the forward and backward deflection at the two ends of the beam are arranged on the steel plates at the two sides of the stiffening ribs; the strain gauge is attached to the middle position of two adjacent stiffening ribs, and one strain gauge is attached to the lower side of the flange of the upper supporting plate and one strain gauge is attached to the upper side of the flange of the lower supporting plate; the jack is arranged in the middle of the bottom of the beam frame; the angle sensor, the strain gauge and the jack are connected into the control terminal through the connecting lines, when the steel beam is damaged or is unstable, the control terminal gives an alarm, and potential safety hazards are reduced.
Description
Technical Field
The patent relates to a building pile foundation static load experiment detection area relates to a counter-force girder steel that is used for unstability and automatic alarm are prevented in pile foundation static load experiment.
Background
A girder steel that is used for building pile foundation static load experiment in the existing market to detect forms for oneself processing, welding mostly, and is generally simpler, crude, has following problem:
(1) in the pile foundation detection process, the running state of the steel beam cannot be monitored, and problems can be found only when the steel beam is damaged in some detection works;
(2) in the testing process, most girder steels only are responsible for the effect of transmission reaction in the market, do not play real time monitoring's effect to the stability of upper portion counter weight (concrete block), just discover after toppling, the unstability takes place for the counter weight of upper portion, have great potential safety hazard.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the counter-force steel beam for instability prevention and automatic alarm in the static load experiment of the pile foundation, and the counter-force steel beam can be monitored.
A counter-force steel beam for instability prevention and automatic alarm of pile foundation static load experiments comprises a beam frame, an angle sensor, a control terminal, a jack and a strain gauge, wherein the beam frame is formed by welding an upper support plate, a lower support plate, a stiffening rib and an oblique support rod; the stiffening ribs are formed by welding two support rods and three stiffening rib steel plates, a steel plate is welded between the two support steel rods, and two steel plates are welded on two sides of each support rod; the number of the angle sensors for detecting the left-right deflection is 2, the number of the angle sensors for detecting the left-right deflection is 1 respectively at the left end and the right end of the beam, and the 2 angle sensors for detecting the left-right deflection at the two ends of the beam are arranged on steel plates at the two sides of the stiffening rib; the number of the angle sensors for detecting the forward and backward deflection is 4, the number of the stiffening ribs at the left end and the right end of the beam is 2 respectively, and the number of the steel plates at the two sides of each stiffening rib is 1 respectively; the strain gauge is attached to the middle position of two adjacent stiffening ribs, and one strain gauge is attached to the lower side of the flange of the upper supporting plate and one strain gauge is attached to the upper side of the flange of the lower supporting plate; the jack is arranged in the middle of the bottom of the beam frame; the angle sensor, the strain gauge and the jack are connected into the control terminal through connecting wires, the control terminal is internally provided with an alarm, a resistance strain gauge, a jack loading controller and a display screen, the angle sensor is connected with the alarm and the display screen, the strain gauge is connected with the resistance strain gauge, the alarm and the display screen, and the jack is connected with the jack loading controller and the display screen.
Preferably, the jack body is provided with a level gauge, and the four corners below the jack base are provided with height-adjustable adjusting feet at positions which are symmetrical in pairs.
As preferred, it includes adjustable support rod and support base to adjust the foot, adjustable support rod includes outer adjusting rod, rotation nut, goes up the screw rod, goes up bracing piece, lower screw rod and lower support rod, outer adjusting rod outside fixed mounting has rotation nut, the inside threaded connection that has of outer adjusting rod upper end has the screw rod through the threaded connection, it has the bracing piece to go up the screw rod upper end through fixed mounting, the inside threaded connection that has the lower screw rod through the threaded connection of outer adjusting rod lower extreme, the lower screw rod lower extreme passes through fixed mounting has the lower support rod, adjustable support rod passes through bracing piece and jack bottom fixed connection, adjustable support rod passes through lower support rod and support base fixed connection.
Preferably, the steel plate in the middle of the stiffening rib is provided with 1-2 round holes, and further preferably, plastic pipes are arranged in the round holes, the length of each plastic pipe is larger than the thickness of the steel plate of the stiffening rib, and pipe bodies at two ends of each plastic pipe are wrapped with rubber sleeves.
Preferably, semicircular lugs are welded on the side edges of the steel plates on the two sides of the stiffening rib, the semicircular lugs are wrapped by rubber materials, and the side edges of the stiffening rib at the semicircular lugs are wrapped by elastic materials.
Compared with the prior art, the anti-instability and automatic alarm counter-force steel beam for the static load experiment of the pile foundation has the following advantages:
(1) through the setting of angle sensor and foil gage, can detect the steady state of reaction girder steel in the testing process.
(2) Through the design to the spirit level of jack and regulation foot, the initial condition of settlement counter-force girder steel that can be more accurate.
(3) Through the design of round hole or semicircle ear on the stiffening rib, can reduce the damage to the equipment circuit, let the circuit clear and tidy.
Drawings
FIG. 1 is a front view of a counter force steel beam for anti-instability and automatic alarm in a static load test of a pile foundation;
FIG. 2 is a cross-sectional view taken along line a-a of a counterforce steel beam for instability prevention and automatic alarm in a static load test of a pile foundation;
FIG. 3 is a cross-sectional view taken along line a-a of a reaction steel beam with semi-circular ears at the sides of a stiffener according to the present invention;
FIG. 4 is a schematic view of the jack of the present invention;
fig. 5 is a schematic view of an adjustable support bar according to the present invention.
The reference numbers are as follows: the device comprises an upper supporting plate 1, a lower supporting plate 2, an angle sensor 2, a connecting line 3, a control terminal 4, a jack 5, a strain gauge 6, a stiffening rib 7, an oblique supporting rod 8, a round hole 9, a round hole 10, a semicircular lug 11, a level meter, a stiffening rib steel plate 7-1, a supporting steel rod 7-2, an adjustable supporting rod 51, an external adjusting rod 511, a rotating nut 512, an upper screw 513, an upper supporting rod 514, a lower screw 515, a lower supporting rod 516, a lower supporting rod 52 and a supporting base.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1 and 2, a counterforce steel beam for instability prevention and automatic alarm of a pile foundation static load experiment comprises a beam frame, an angle sensor 2, a control terminal 4, a jack 5 and a strain gauge 6, wherein the beam frame is formed by welding an upper support plate 1, a lower support plate 1, a stiffening rib 7 and an oblique support rod 8; the stiffening ribs are formed by welding two support rods 7-2 and three stiffening rib steel plates 7-1, a steel plate is welded between the two support steel rods, and two steel plates are welded on two sides of each of the two support steel rods; 2 angle sensors for detecting left and right deflection, 1 each at the left and right ends of the beam, installed between two adjacent stiffening ribs; the number of the angle sensors 2 for detecting the forward and backward deflection is 4, the number of the stiffening ribs 7 at the left end and the right end of the beam is 2 respectively, and the angle sensors for detecting the forward and backward deflection at the two ends of the beam are arranged on the steel plates at the two sides of the stiffening ribs; the strain gauge 6 is attached to the middle position of two adjacent stiffening ribs, and the lower side of the flange of the upper supporting plate 1 and the upper side of the flange of the lower supporting plate 1 are respectively attached with one strain gauge; the jack 5 is arranged in the middle of the bottom of the beam frame; angle sensor, foil gage and jack pass through connecting wire 3 and insert control terminal, and control terminal embeds alarm, resistance strain gauge, jack loading controller and display screen, angle sensor connects alarm and display screen, and foil gage connection resistance strain gauge, alarm and display screen, jack loading controller and display screen are connected to the jack, through above-mentioned design, when the girder steel takes place to destroy or the unstability, control terminal will send the police dispatch newspaper, has reduced the emergence of potential safety hazard.
As shown in FIG. 4, the jack is specially designed, a level gauge 11 is additionally arranged on the jack body to measure whether the jack is in a horizontal position, so that the measurement is more accurate, in order to adjust the horizontal position of the jack, adjusting feet capable of adjusting the height are arranged at positions which are pairwise symmetrical at four corners of a base of the jack, as shown in FIG. 5, the adjusting feet comprise an adjustable supporting rod 51 and a supporting base 52, the adjustable supporting rod 51 comprises an outer adjusting rod 511, a rotating nut 512, an upper screw 513, an upper supporting rod 514, a lower screw 515 and a lower supporting rod 516, the rotating nut 512 is fixedly arranged at the middle position of the outer side of the outer adjusting rod 511, the upper screw 513 is connected to the inner part of the upper end of the outer adjusting rod 511 through a thread, the upper supporting rod 514 is fixedly arranged at the upper end of the upper screw 513, the lower screw 515 is connected to the inner part of the lower end of the outer adjusting rod 511 through a thread, the lower supporting, the adjustable supporting rod 51 is fixedly connected with the bottom end of the jack 5 through an upper supporting rod 514, and the adjustable supporting rod 51 is fixedly connected with the supporting base 52 through a lower supporting rod 516; the length of the adjustable support rod 51 can be changed by rotating an outer adjusting rod 511 arranged inside the adjustable support rod 51, the thread turning direction of the upper screw 513 is opposite to that of the lower screw 515, the distance between the lower support rod 516 and the upper support rod 514 can be reduced by rotating the outer adjusting rod 511 clockwise, and the distance between the lower support rod 516 and the upper support rod 514 can be increased by rotating the outer adjusting rod 511 anticlockwise; by setting the direction of the thread of the upper screw 513 opposite to the direction of the thread of the lower screw 515, it is ensured that the upper screw 513 and the lower screw 515 are moved toward each other when the outer adjustment lever 511 is rotated. The adjusting foot of each bottom angle of the jack base can be one or a plurality of, and is increased or decreased according to the weight of the counter-force steel beam.
Because the connecting wire 3 is numerous, if place at will, cause the circuit chaotic easily, measure scene chaotic, the connecting wire causes the circuit to damage with the friction of counter-force girder steel easily simultaneously, have the potential safety hazard, as shown in fig. 2, be equipped with 1-2 round holes 9 on the steel sheet in the middle of the stiffening rib, let the connecting wire pass through round hole 9, for the friction of reduction connecting wire with the steel sheet, it has the plastic tubing to install on round hole 9, the length of plastic tubing is greater than the thickness of stiffening rib steel sheet, for further reducing wear, parcel rubber sleeve on the body of plastic tubing both ends, through the wearing and tearing of this design reduction circuit.
Preferably, the stiffening rib is provided with small holes, the strength of the stiffening rib can be reduced to a certain degree, in order to enable the measurement result to be more accurate, semicircular lugs 10 are welded on the side edges of the steel plates on the two sides of the stiffening rib, the semicircular lugs 10 are wrapped by rubber materials, and the side edges of the stiffening rib at the semicircular lugs are wrapped by elastic materials.
Although the present invention has been described with reference to the preferred embodiments, it is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A counter-force steel beam for instability prevention and automatic alarm of static load experiment of a pile foundation comprises a beam frame, angle sensors, a control terminal, a jack and strain gauges, wherein the beam frame is formed by welding an upper supporting plate, a lower supporting plate, stiffening ribs and oblique supporting rods, the stiffening ribs are formed by welding two supporting rods and three stiffening rib steel plates, a steel plate is welded between the two supporting steel rods, and two steel plates are welded on two sides of each of the two supporting steel rods; the strain gauge is attached to the middle position of two adjacent stiffening ribs, and one strain gauge is attached to the lower side of the flange of the upper supporting plate and one strain gauge is attached to the upper side of the flange of the lower supporting plate; the jack is arranged in the middle of the bottom of the beam frame; the angle sensor, the strain gauge and the jack are connected into the control terminal through connecting wires, the control terminal is internally provided with an alarm, a resistance strain gauge, a jack loading controller and a display screen, the angle sensor is connected with the alarm and the display screen, the strain gauge is connected with the resistance strain gauge, the alarm and the display screen, and the jack is connected with the jack loading controller and the display screen.
2. The counterforce steel beam for instability prevention and automatic alarm in the static load experiment of the pile foundation as claimed in claim 1, wherein the jack body is provided with a level gauge, and height-adjustable adjusting feet are arranged at four corners below the jack base in pairwise symmetry.
3. The counter-force steel beam for unstability prevention and automatic alarm in pile foundation static load experiments as claimed in claim 2, wherein the adjusting foot comprises an adjustable supporting rod and a supporting base, the adjustable supporting rod comprises an outer adjusting rod, a rotating nut, an upper screw rod, an upper supporting rod, a lower screw rod and a lower supporting rod, the rotating nut is fixedly mounted on the outer side of the outer adjusting rod, the upper screw rod is connected to the inner portion of the upper end of the outer adjusting rod through threads, the upper supporting rod is fixedly mounted on the upper end of the upper screw rod, the lower screw rod is connected to the inner portion of the lower end of the outer adjusting rod through threads, the lower supporting rod is fixedly mounted on the lower end of the lower screw rod, the adjustable supporting rod is fixedly connected with the bottom end of the jack through the upper supporting rod, and the adjustable supporting rod is fixedly.
4. The counterforce steel beam for the instability prevention and automatic alarm of the static load experiment of the pile foundation as claimed in claim 1 or 2, wherein the middle steel plate of the stiffening rib is provided with 1-2 round holes.
5. The counterforce steel beam for the instability prevention and automatic alarm of the static load experiment of the pile foundation as claimed in claim 4,
the circular holes are internally provided with plastic pipes, the length of each plastic pipe is greater than the thickness of the stiffening rib steel plate, and pipe bodies at two ends of each plastic pipe are wrapped with rubber sleeves.
6. The counterforce steel beam for pile foundation static load experiment unstability prevention and automatic alarm according to claim 1 or 2, characterized in that semicircular lugs are welded on the side edges of the steel plates on two sides of the stiffening rib.
7. The counterforce steel beam for pile foundation static load experiment instability prevention and automatic alarm as claimed in claim 6, wherein the semicircular lugs are wrapped by rubber materials, and the side edges of the stiffening ribs at the semicircular lugs are wrapped by elastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921727496.7U CN210827620U (en) | 2019-10-15 | 2019-10-15 | Anti-force steel beam for pile foundation static load experiment instability prevention and automatic alarm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921727496.7U CN210827620U (en) | 2019-10-15 | 2019-10-15 | Anti-force steel beam for pile foundation static load experiment instability prevention and automatic alarm |
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| CN210827620U true CN210827620U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117030487A (en) * | 2023-10-09 | 2023-11-10 | 武汉中岩科技股份有限公司 | Safety pre-warning method and device for ballast counter-force platform suitable for static load test |
-
2019
- 2019-10-15 CN CN201921727496.7U patent/CN210827620U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117030487A (en) * | 2023-10-09 | 2023-11-10 | 武汉中岩科技股份有限公司 | Safety pre-warning method and device for ballast counter-force platform suitable for static load test |
| CN117030487B (en) * | 2023-10-09 | 2023-12-29 | 武汉中岩科技股份有限公司 | Safety pre-warning method and device for ballast counter-force platform suitable for static load test |
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