Temperature control type saturated soil consolidation apparatus

Abstract

The invention provides a temperature control type saturated soil consolidometer. The temperature control type saturated soil consolidometer comprises a pressure chamber, a temperature control chamber, a loading system and a sensor connecting device, the pressure chamber sequentially comprises a base, a first permeable stone, a first guide ring, a cutting ring, a second guide ring, a second permeable stone and a consolidation cover from bottom to top, and saturated consolidation soil is placed in the pressure chamber; a consolidation box is arranged at the bottom of the pressure chamber, and water is added into a space between the pressure chamber and the consolidation box to serve as a temperature control chamber; a loading system is arranged above the pressure chamber, the loading system sequentially comprises a scale hook, a dowel bar, a balance bar and a balancing instrument from bottom to top, and the dowel bar is fixed on the scale hook; the sensor connecting device is provided with a temperature sensor and a displacement sensor, and the temperature sensor and the displacement sensor are located above the fixed cover. The device is complete in function, simple in structure, high in operability, convenient to disassemble and capable of being used and replaced; displacement and temperature data can be recorded in real time through the temperature sensor and the displacement sensor, the test precision is effectively improved, and the efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of geotechnical testing instruments, and in particular to a temperature-controlled saturated soil consolidation instrument. Background Art

[0002] The consolidation test is a conventional indoor geotechnical test that gradually applies vertical pressure to saturated soil samples under lateral conditions and measures the relationship between the pressure and the corresponding soil sample deformation. However, due to some device problems, the consolidation instruments on the market today cannot directly and automatically record the soil settlement displacement values ​​corresponding to the applied load over a period of time, so data recording and processing are more troublesome. In addition, scholars are now considering the soil consolidation settlement under the influence of temperature, and conventional test instruments cannot analyze the influence of temperature on the consolidation deformation characteristics of saturated soil.

[0003] Therefore, how to design a set of saturated soil consolidation compression testing instruments with simple structure, easy operation, automatic data recording and data processing capabilities, while taking into account the influence of temperature, has a strong practical significance. Summary of the invention

[0004] The main purpose of the present invention is to provide a temperature-controlled saturated soil consolidation instrument to address the above-mentioned problems.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A temperature-controlled saturated soil consolidation instrument, comprising a pressure chamber 1, a temperature control chamber 2, a loading system 3, and a sensor connection device 4;

[0007] The pressure chamber comprises, from bottom to top, a base, a first permeable stone, a first guide ring, a ring cutter, a second guide ring, a second permeable stone, and a consolidation cover, wherein saturated consolidation soil is placed in the ring cutter;

[0008] A consolidation box is provided at the bottom of the pressure chamber, and water is added to the space between the pressure chamber and the consolidation box to serve as a temperature control chamber;

[0009] A loading system is provided above the pressure chamber, and the loading system includes a weighing hook, a force transmission rod, a balancing rod, and a balancing instrument in order from bottom to top. The force transmission rod is fixed on the weighing hook, a balancing rod is fixed on the force transmission rod, balancing instruments are provided at both ends of the balancing rod, and a balancing component is provided at the end of the force transmission rod;

[0010] The sensor connection device is provided with a temperature sensor and a displacement sensor, and the temperature sensor and the displacement sensor are located above the consolidation cover.

[0011] While adopting the above technical solutions, the present invention may also adopt or combine the following technical solutions:

[0012] As a preferred technical solution of the present invention: a heating wire is arranged in the temperature control chamber, and the heating wire is used to heat water.

[0013] As a preferred technical solution of the present invention: the balancing instrument is provided with a knob, and the knob is fixed to the center of the consolidation cover.

[0014] As a preferred technical solution of the present invention: the sensor connecting device includes a first telescopic rod, a second telescopic rod, a third telescopic rod, a sleeve connector, a first corner connector, a second corner connector, a displacement sensor connector, and a temperature sensor connector. The first telescopic rod is provided with a sleeve connector, the sleeve connector is provided with a first corner connector and a second corner connector, the first corner connector is provided with a second telescopic rod, the second telescopic rod is provided with a temperature sensor connector, the top circular hole of the temperature sensor connector is provided with a temperature sensor, the second corner connector is provided with a third telescopic rod, the third telescopic rod is provided with a displacement sensor connector, and the top circular hole of the displacement sensor connector is provided with a displacement sensor.

[0015] As a preferred technical solution of the present invention: the sleeve connector is fixed to the first telescopic rod and the second telescopic rod by bolts.

[0016] As a preferred technical solution of the present invention: the third telescopic rod is fixed to the displacement sensor connector by bolts.

[0017] As a preferred technical solution of the present invention: the temperature sensor is connected to a transition device, and the transition device is connected to a computer to record and collect data.

[0018] As a preferred technical solution of the present invention: the displacement sensor is connected to a transition device, and the transition device is connected to a computer for control and data recording and collection.

[0019] As a preferred technical solution of the present invention: water injection holes are provided on the consolidation cover and the permeable stone.

[0020] The invention provides a temperature-controlled saturated soil consolidation instrument, which has the following beneficial effects: the invention has complete functions, simple structure, high operability, is easy to disassemble, and can be used and replaced; the displacement and temperature data can be recorded in real time by a temperature sensor and a displacement sensor, and the test accuracy is effectively improved, and the efficiency is high; the device is connected by bolts, and the overall firmness of the device is high, which is convenient for experiments and operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the temperature-controlled saturated soil consolidation apparatus provided by the present invention.

[0022] Figure 2 is the main view.

[0023] Figure 3 This is a top view.

[0024] Figure 4 It is a side view.

[0025] Figure 5 This is an exploded view of the pressure room control chamber.

[0026] Figure 6 Schematic diagram of the pressure room temperature control chamber.

[0027] Figure 7 Schematic diagram of the loading system.

[0028] Figure 8 An exploded view of the sensor connection device.

[0029] In the figure: 1-pressure chamber; 2-temperature control chamber; 3-loading system; 4-sensor connecting device; 11-base; 12-first permeable stone; 13-first guide ring; 14-ring knife; 15-second guide ring; 16-second permeable stone; 17-consolidation cover; 31-scale hook; 32-force transmission rod; 33-balance rod; 34-balancer; 35-balance component; 36-knob; 41-first telescopic rod; 42-second telescopic rod; 43-third telescopic rod; 44-sleeve connector; 45-first corner connector; 46-second corner connector; 47-temperature sensor connector; 48-displacement sensor connector. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1-4 As shown, a temperature-controlled saturated soil consolidation instrument comprises a pressure chamber 1, a temperature control chamber 2, a loading system 3, and a sensor connection device 4;

[0032] The pressure chamber 1 includes, from bottom to top, a base 11, a first permeable stone 12, a first guide ring 13, a ring cutter 14, a second guide ring 15, a second permeable stone 16, and a consolidation cover 17. Saturated consolidation soil is placed in the ring cutter 14.

[0033] A consolidation box is provided at the bottom of the pressure chamber 1, and water is added to the space between the pressure chamber 1 and the consolidation box to serve as the temperature control chamber 2;

[0034] A loading system 3 is provided above the pressure chamber 1. The loading system 3 includes a weighing hook 31, a force transmission rod 32, a balancing rod 33, and a balancing instrument 34 from bottom to top. The force transmission rod 32 is fixed on the weighing hook 31. The balancing rod 33 is fixed on the force transmission rod 32. The balancing instruments 34 are provided at both ends of the balancing rod 33. A balancing component 35 is provided at the end of the force transmission rod 32. The balancing component 35 is used to balance the deadweight of the weighing hook 31, the force transmission rod 32, and the balancing rod 33, so that the experimental results are accurate.

[0035] The sensor connecting device 4 is provided with a temperature sensor and a displacement sensor, and the temperature sensor and the displacement sensor are located above the consolidation cover 17 .

[0036] A heating wire is arranged in the temperature control chamber 2, and the heating wire is used to heat water.

[0037] The balancer 34 is provided with a knob 36 which can be rotated and fixed to the center of the consolidation cover 17. The balance component 35 passes through the consolidation box 21 and applies load through the knob 36. The bottom of the connector is connected to a hook, and specific weights are placed to correspond to the load applied to the soil.

[0038] The sensor connecting device 4 includes a first telescopic rod 41, a second telescopic rod 42, a third telescopic rod 43, a sleeve connector 44, a first corner connector 45, a second corner connector 46, a temperature sensor connector 47, and a displacement sensor connector 48. The first telescopic rod 41 is provided with a sleeve connector 44, the sleeve connector 44 is provided with a first corner connector 45 and a second corner connector 46, the first corner connector 45 is provided with a second telescopic rod 42, the second telescopic rod 42 is provided with a temperature sensor connector 47, a temperature sensor is provided on the round hole at the top of the temperature sensor connector 47, and the temperature sensor is used to record the temperature of the soil, the second corner connector 46 is provided with a third telescopic rod 43, the third telescopic rod 43 is provided with a displacement sensor connector 48, and a displacement sensor is provided on the round hole at the top of the displacement sensor connector 48, and the displacement sensor can record the slight deformation of the soil under loading.

[0039] The temperature sensor is connected to the transition device, and the transition device is connected to a computer for data recording and collection.

[0040] The displacement sensor is connected to the transition device, and the transition device is connected to a computer for control and data recording and collection.

[0041] The sleeve connector 44 is fixed to the first telescopic rod 41 and the second telescopic rod 42 by bolts.

[0042] The third telescopic rod 43 and the displacement sensor connector 48 are fixed by bolts.

[0043] The consolidation cover 17 and the permeable stone are provided with water injection holes, which can be filled with water through a watering can.

[0044] A heating wire is arranged in the temperature control chamber, and the heating wire is used for heating water.

[0045] A high temperature resistant rubber ring is provided on the outside of the connector for protection.

[0046] Specifically, the temperature-controlled saturated soil consolidation instrument is implemented in the following manner:

[0047] like Figure 5 As shown, before the test, the first permeable stone, filter paper, and ring knife containing soil sample are placed in the pressure chamber in sequence, and water is filled in the temperature control chamber to control the temperature. After assembly, Figure 6 As shown, then install the loading system and balance the deadweight through the balancing components. Figure 7 As shown, then install the sensor connection device. After assembly, Figure 8 As shown, finally assemble and install the sensor, as shown in Figure 2 The displacement sensor and the temperature sensor can quickly reflect the displacement state and temperature state of the soil, and the temperature is controlled by a water bath, which is highly accurate and stable. In addition, the present invention is an improvement on the ordinary one-dimensional consolidation instrument, and will not cause damage to the consolidation instrument. If the sensor connection device is removed, it can also be used normally.

[0048] The above-mentioned specific implementation methods are used to explain the present invention and are only preferred embodiments of the present invention, rather than limiting the present invention. Any modifications, equivalent substitutions, improvements, etc. made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A temperature-controlled saturated soil consolidation instrument, characterized in that: It comprises a pressure chamber (1), a temperature control chamber (2), a loading system (3), and a sensor connecting device (4); The pressure chamber (1) comprises, from bottom to top, a base (11), a first permeable stone (12), a first guide ring (13), a ring cutter (14), a second guide ring (15), a second permeable stone (16), and a consolidation cover (17); saturated consolidated soil is placed in the ring cutter (14); A consolidation box is provided at the bottom of the pressure chamber (1), and water is added into the space between the pressure chamber (1) and the consolidation box to serve as a temperature control chamber (2); A loading system (3) is provided above the pressure chamber (1), and the loading system (3) comprises, from bottom to top, a weighing hook (31), a force transmission rod (32), a balancing rod (33), and a balancing instrument (34); the weighing hook (31) is fixed with the force transmission rod (32), the balancing rod (33) is fixed with the force transmission rod (32), balancing instruments (34) are provided at both ends of the balancing rod (33), and a balancing component (35) is provided at the end of the force transmission rod (32); The sensor connection device (4) is provided with a temperature sensor and a displacement sensor, and the temperature sensor and the displacement sensor are located above the consolidation cover (17).

2. The temperature-controlled saturated soil consolidation instrument according to claim 1, characterized in that: A heating wire is arranged in the temperature control chamber (2), and the heating wire is used to heat water.

3. The temperature-controlled saturated soil consolidation instrument according to claim 1, characterized in that: The balancing instrument (34) is provided with a knob (36), and the knob (36) is fixed to the center of the consolidation cover (17).

4. The temperature-controlled saturated soil consolidation instrument according to claim 1, characterized in that: The sensor connection device (4) comprises a first telescopic rod (41), a second telescopic rod (42), a third telescopic rod (43), a sleeve connector (44), a first corner connector (45), a second corner connector (46), a temperature sensor connector (47), and a displacement sensor connector (48); the first telescopic rod (41) is provided with a sleeve connector (44); the sleeve connector (44) is provided with a first corner connector (45) and a second corner connector (46); the first corner connector (45) is provided with a second telescopic rod (42); the second telescopic rod (42) is provided with a temperature sensor connector (47); a temperature sensor is provided on a circular hole at the top of the temperature sensor connector (47); the second corner connector (46) is provided with a third telescopic rod (43); the third telescopic rod (43) is provided with a displacement sensor connector (48); and a displacement sensor is provided on a circular hole at the top of the displacement sensor connector (48).

5. The temperature-controlled saturated soil consolidation instrument according to claim 4, characterized in that: The sleeve connector (44) is fixed to the first telescopic rod (41) and the second telescopic rod (42) by means of bolts.

6. The temperature-controlled saturated soil consolidation instrument according to claim 4, characterized in that: The third telescopic rod (43) and the displacement sensor connector (48) are fixed by bolts.

7. The temperature-controlled saturated soil consolidation instrument according to claim 1, characterized in that: The temperature sensor is connected to a transition device, and the transition device is connected to a computer for data recording and collection.

8. The temperature-controlled saturated soil consolidation instrument according to claim 1, characterized in that: The displacement sensor is connected to a transition device, and the transition device is connected to a computer for control and data recording and collection.

9. The temperature-controlled saturated soil consolidation instrument according to claim 1, characterized in that: The consolidation cover (17) and the permeable stone are provided with water injection holes.

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