Press-in type open caisson automatic pressure control device and using method thereof

Abstract

The invention relates to a press-in type open caisson automatic pressure control device and a using method thereof.The device comprises a main barrel, a center penetrating jack, an upper anchorage device, a lower anchorage device and an automatic control system, a base is fixedly installed at the bottom of the main barrel, a steel strand penetrates through the center of the base, the lower anchorage device is installed on the base, and a lower anchorage oil cylinder is arranged on the lower anchorage device; the lower anchorage device is connected with the lower anchorage oil cylinder through a hydraulic pipeline; an upper anchoring oil cylinder is arranged at the top of the main barrel, an upper anchorage device is arranged on the lower portion of the upper anchoring oil cylinder, and the upper anchorage device is connected with the upper anchoring oil cylinder through a hydraulic pipeline; the center-penetrating jack is arranged in the center of the interior of the main barrel body and is supported between the upper anchorage device and the lower anchorage oil cylinder; the steel strand is anchored by the upper anchorage device and the lower anchorage device; the upper anchoring oil cylinder, the lower anchoring oil cylinder and the center hole jack are in signal connection with an automatic control system, and the automatic control system controls output of the upper anchoring oil cylinder, the lower anchoring oil cylinder and the center hole jack. According to the invention, real-time and comprehensive monitoring, regulation and control of pressure can be realized, and the construction safety, timeliness and accuracy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to an automatic pressure control device for a press-in caisson and a use method thereof. Background Art

[0002] In construction projects, caisson construction has always been a widely used foundation construction method. Caisson construction mainly involves making a shaft-shaped structure on the ground or in a foundation pit, and then letting it gradually sink to a predetermined position under its own gravity, thereby providing a stable foundation support for buildings or structures. However, traditional caisson construction has always faced a thorny problem during the critical operation of pressing in, which is the difficulty in accurately controlling the pressure. Uneven sinking will cause uneven force on the caisson structure, resulting in excessive local stress, which not only affects the structural stability of the caisson itself, but may also cause great safety hazards to subsequent engineering construction.

[0003] During the caisson sinking process, existing equipment is unable to achieve real-time, comprehensive monitoring and regulation. This makes it difficult to promptly discover and take effective solutions once problems arise during the caisson construction process, further increasing the project risk. Summary of the invention

[0004] The present invention provides a press-in type caisson automatic pressure control device and a use method thereof to solve the above technical problems.

[0005] In order to solve the above technical problems, the present invention provides an automatic pressure control device for a press-in caisson, comprising a main cylinder, a through-hole jack, an upper anchor, a lower anchor and an automatic control system.

[0006] A base is fixedly installed at the bottom of the main cylinder, a steel strand is passed through the center of the base, a lower anchor is installed on the base, a lower anchor cylinder is provided on the lower anchor, and the lower anchor and the lower anchor cylinder are connected by a hydraulic pipeline;

[0007] An upper anchor cylinder is provided on the top of the main cylinder, an upper anchor is provided at the lower part of the upper anchor cylinder, and the upper anchor is connected to the upper anchor cylinder by a hydraulic pipeline;

[0008] The through-core jack is arranged at the inner center of the main cylinder and supported between the upper anchor and the lower anchor cylinder; the upper anchor and the lower anchor anchor the steel strand;

[0009] The upper anchor cylinder, the lower anchor cylinder and the through-core jack are connected to the automatic control system by signal, and the automatic control system controls the extension and retraction amounts of the upper anchor cylinder and the lower anchor cylinder and the output pressure of the through-core jack.

[0010] Preferably, a pressure sensor is installed on the through-hole jack, and the pressure sensor is connected to the automatic control system signal.

[0011] Preferably, the upper anchor cylinder and the lower anchor cylinder are respectively provided with a stroke sensor, and the stroke sensor is connected to the automatic control system signal.

[0012] Preferably, the cylinder shell outside the main cylinder is fixedly connected to the reaction force device.

[0013] Preferably, the upper anchor and the lower anchor stretch the steel strand to put the steel strand in a taut state.

[0014] Preferably, the upper anchor and the lower anchor are both made of high-strength alloy material.

[0015] The present invention also provides a method for using the above-mentioned automatic pressure control device for a press-in caisson, comprising the following steps:

[0016] Step 1: Install the main cylinder and the base, thread the steel strand, and input preset parameters into the automatic control system;

[0017] Step 2: Install the upper anchor cylinder, connect the upper anchor, use the upper anchor to fix one end of the steel strand, and use the through-hole jack to perform tension control in the middle through hydraulic action;

[0018] Step 3: Install the anchor cylinder and connect the anchor to anchor the other end of the steel strand;

[0019] Step 4: Pressure control is achieved by controlling the expansion and contraction of the steel strand.

[0020] Preferably, the preset parameters at least include the extension and retraction amount and stroke of the upper anchor cylinder and the lower anchor cylinder.

[0021] Compared with the prior art, the automatic pressure control device for the press-in caisson provided by the present invention and the method for using the same have the following advantages:

[0022] 1. The present invention can realize real-time and comprehensive monitoring and regulation of pressure during the sinking process of the caisson, greatly improving the construction safety, timeliness and accuracy;

[0023] 2. The present invention realizes the overall installation, use and disassembly of the pressure control device, and the operation is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an automatic pressure control device for a press-in caisson in a specific embodiment of the present invention.

[0025] In the figure: 10-main cylinder, 11-cylinder shell, 12-base, 13-steel strand, 20-through-core jack, 30-upper anchor, 31-upper anchor cylinder, 40-lower anchor, 41-lower anchor cylinder. DETAILED DESCRIPTION

[0026] In order to describe the technical solution of the above invention in more detail, specific embodiments are listed below to demonstrate the technical effects; it should be emphasized that these embodiments are used to illustrate the present invention but not to limit the scope of the present invention.

[0027] The automatic pressure control device for a press-in caisson provided by the present invention is as follows: Figure 1 As shown, it includes a main cylinder 10, a through-hole jack 20, an upper anchor 30, a lower anchor 40 and an automatic control system (not shown), wherein:

[0028] A base 12 is fixedly installed at the bottom of the main cylinder 10, a steel strand 13 is passed through the center of the base 12, a lower anchor 40 is installed on the base 12, and a lower anchor cylinder 41 is provided on the lower anchor 40. The lower anchor 40 and the lower anchor cylinder 41 are connected by a hydraulic pipeline (not shown);

[0029] An upper anchor cylinder 31 is provided at the top of the main cylinder 10, an upper anchor 30 is provided at the lower part of the upper anchor cylinder 31, and the upper anchor 30 is connected to the upper anchor cylinder 31 by a hydraulic pipeline (not shown);

[0030] The through-core jack 20 is arranged at the inner center of the main cylinder 10 and supported between the upper anchor 30 and the lower anchor cylinder 41; the upper anchor 30 and the lower anchor 40 anchor the steel strand 13, and the output pressure of the through-core jack 20 is used to realize tension control;

[0031] The upper anchor cylinder 31, the lower anchor cylinder 41 and the through-core jack 20 are connected to the automatic control system signal, and the automatic control system controls the extension and contraction amount of the upper anchor cylinder 31, the lower anchor cylinder 41 and the output pressure of the through-core jack 20, thereby realizing pressure control of the entire sinking process.

[0032] The present invention can realize real-time and comprehensive monitoring and regulation of pressure during the sinking process of the caisson, greatly improving construction safety, timeliness and accuracy; and realizes the overall installation, use and disassembly of the pressure control device, making the operation faster.

[0033] In some embodiments, a pressure sensor (not shown) is installed on the through-hole jack 20, and the pressure sensor is connected to the automatic control system signal to monitor the output pressure of the through-hole jack 20 in real time, and use the pressure data to further realize automatic control of the pressure control device.

[0034] In some embodiments, the upper anchor cylinder 31 and the lower anchor cylinder 41 are respectively provided with a stroke sensor (not shown), and the stroke sensor is connected to the automatic control system signal to monitor the telescopic stroke of the cylinder in real time, and use the stroke data to determine the sinking state of the caisson and adjust the working parameters of the pressure control device in time.

[0035] In some embodiments, the cylinder shell 11 outside the main cylinder body 10 is fixedly connected to a reaction force device (not shown), and the reaction force device is connected by a steel strand 13, and pressurization is achieved by controlling the expansion and contraction of the steel strand 13.

[0036] In some embodiments, the upper anchor 30 and the lower anchor 40 stretch the steel strand 13 to put the steel strand 13 in a taut state, so that each point of the caisson is evenly stressed.

[0037] In some embodiments, the upper anchor 30 and the lower anchor 40 can be made of high-strength alloy materials (for example, tensile strength greater than 480 MPa, specifically steel alloy, aluminum alloy, nickel steel alloy, etc.), thereby improving the tensile strength and shear strength of the entire pressure control device.

[0038] The present invention also provides a method for using the above-mentioned automatic pressure control device for a press-in caisson, comprising the following steps:

[0039] Step 1: Install the main cylinder 10 and the base 12, thread the steel strand 13, and input preset parameters into the automatic control system. The preset parameters at least include the telescopic amount and stroke of the upper anchor cylinder 31 and the lower anchor cylinder 41, and may also include the threshold of the pressure sensor, etc.

[0040] Step 2: Install the upper anchor cylinder 31, connect the upper anchor 30, use the upper anchor 30 to fix one end of the steel strand 13, and use the through-hole jack 20 to perform tension control in the middle through hydraulic action;

[0041] Step 3: Install the anchor cylinder 41 to connect the anchor 40 to anchor the other end of the steel strand 13;

[0042] Step 4: Pressure control is achieved by controlling the expansion and contraction of the steel strand 13 .

[0043] The installation, use and disassembly of the above method are simple and quick.

[0044] In summary, the automatic pressure control device for a press-in caisson provided by the present invention and its use method include a main cylinder 10, a through-core jack 20, an upper anchor 30, a lower anchor 40 and an automatic control system. A base 12 is fixedly installed at the bottom of the main cylinder 10, a steel strand 13 is passed through the center of the base 12, a lower anchor 40 is installed on the base 12, a lower anchor cylinder 41 is provided on the lower anchor 40, and the lower anchor 40 is connected to the lower anchor cylinder 41 by a hydraulic pipeline; an upper anchor cylinder 31 is provided at the top of the main cylinder 10, and an upper anchor cylinder 31 is provided at the lower part of the upper anchor cylinder 31. The upper anchor 30 is connected to the upper anchor cylinder 31 by a hydraulic pipeline; the through-core jack 20 is arranged at the inner center of the main cylinder 10, and is supported between the upper anchor 30 and the lower anchor cylinder 41; the upper anchor 30 and the lower anchor 40 anchor the steel strand 13; the upper anchor cylinder 31, the lower anchor cylinder 41 and the through-core jack 20 are connected to the automatic control system signal, and the automatic control system controls the expansion and contraction amount of the upper anchor cylinder 31 and the lower anchor cylinder 41 and the output pressure of the through-core jack 20, so as to realize the pressure control of the whole sinking process. The present invention can realize the real-time and comprehensive monitoring and regulation of the pressure during the sinking process of the caisson, greatly improving the construction safety, timeliness and accuracy; and realizes the overall installation, use and disassembly of the pressure control device, and the operation is faster.

[0045] Obviously, those skilled in the art can make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. An automatic pressure control device for a press-in caisson, characterized in that: It includes the main cylinder, through-hole jack, upper anchor, lower anchor and automatic control system. A base is fixedly installed at the bottom of the main cylinder, a steel strand is passed through the center of the base, a lower anchor is installed on the base, a lower anchor cylinder is provided on the lower anchor, and the lower anchor and the lower anchor cylinder are connected by a hydraulic pipeline; An upper anchor cylinder is provided on the top of the main cylinder, an upper anchor is provided at the lower part of the upper anchor cylinder, and the upper anchor is connected to the upper anchor cylinder by a hydraulic pipeline; The through-core jack is arranged at the inner center of the main cylinder and supported between the upper anchor and the lower anchor cylinder; the upper anchor and the lower anchor anchor the steel strand; The upper anchor cylinder, the lower anchor cylinder and the through-core jack are connected to the automatic control system by signal, and the automatic control system controls the extension and retraction amounts of the upper anchor cylinder and the lower anchor cylinder and the output pressure of the through-core jack.

2. The automatic pressure control device for a press-in caisson as claimed in claim 1, characterized in that: A pressure sensor is installed on the through-hole jack, and the pressure sensor is connected to the automatic control system signal.

3. The automatic pressure control device for a press-in caisson according to claim 1, characterized in that: The upper anchor cylinder and the lower anchor cylinder are respectively provided with travel sensors, and the travel sensors are connected to the automatic control system by signal.

4. The automatic pressure control device for a press-in caisson as claimed in claim 1, characterized in that: The cylinder shell outside the main cylinder is fixedly connected to the reaction force device.

5. The automatic pressure control device for a press-in caisson according to claim 1, characterized in that: The upper anchor and the lower anchor stretch the steel strand to put the steel strand in a taut state.

6. The automatic pressure control device for a press-in caisson according to claim 1, characterized in that: The upper anchor and the lower anchor are both made of high-strength alloy material.

7. A method for using the automatic pressure control device for a press-in caisson as claimed in claim 1, characterized in that: The steps include: Step 1: Install the main cylinder and the base, thread the steel strand, and input preset parameters into the automatic control system; Step 2: Install the upper anchor cylinder, connect the upper anchor, use the upper anchor to fix one end of the steel strand, and use the through-hole jack to perform tension control in the middle through hydraulic action; Step 3: Install the anchor cylinder and connect the anchor to anchor the other end of the steel strand; Step 4: Pressure control is achieved by controlling the expansion and contraction of the steel strand.

8. The method of use according to claim 7, characterized in that: The preset parameters at least include the extension and retraction amount and stroke of the upper anchor cylinder and the lower anchor cylinder.

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