Modularized underground diaphragm wall construction equipment and construction method

Abstract

The invention discloses modular underground diaphragm wall construction equipment which comprises a main machine and a group of cutting box body standard knots, every two adjacent cutting box body standard knots are connected through a cross hinge, the equipment further comprises a control system and guide frames, and the guide frames are arranged on the two sides of a notch of an underground diaphragm wall. A GPS module and a gyroscope are arranged in the lowermost cutting box body standard knot, and a plurality of wireless stress sensors distributed in an array mode are arranged in each cutting box body standard knot. The control system adopts a PID (Proportion Integration Differentiation) algorithm to control and adjust the pressure of the hydraulic cylinder of the host in a closed loop manner according to bending moment and contact pressure information acquired by the wireless stress sensor, position coordinates acquired by the GPS module and attitude information acquired by the gyroscope. The invention further discloses a construction method adopting the modular underground diaphragm wall construction equipment. The equipment can be quickly assembled, disassembled and turned over, the idle time of the equipment is shortened, and the construction efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of diaphragm wall construction and anti-seepage technology, and particularly relates to a modular diaphragm wall construction equipment and a construction method. Background Art

[0002] During the construction process of traditional diaphragm walls, operations such as equipment installation and movement, complex excavation, formwork support, and concrete pouring are usually required. These operations not only have a long construction period, high labor and machinery costs, but also are greatly affected by geological conditions and site limitations in actual construction, resulting in difficulties in ensuring construction efficiency and quality.

[0003] At present, although there is already the technology of precast diaphragm walls, the related technologies focus on the assembly of wall structures, and there are still deficiencies in the modularization and intelligentization of construction equipment. Especially in the case of complex and changeable construction site environments with high uncertainties, the diaphragm wall construction technology faces the following challenges in many complex construction environments:

[0004] 1) Construction efficiency and accuracy: The traditional diaphragm wall construction method has limitations in construction accuracy and speed. Especially in the adaptability to deep foundation pits, complex geological conditions or narrow spaces, the traditional construction process is cumbersome, the construction period is long, and it relies on a large amount of labor.

[0005] 2) Lack of equipment coordination ability and equipment monitoring: There is a lack of close cooperation and linkage between construction equipment, making it difficult to achieve flexible adjustment and switching during the construction process. The compatibility of equipment is poor, and the diaphragm wall needs to be completed one by one, resulting in a long delay time between each alternation. At the same time, the existing equipment monitoring system is relatively single, lacking in-depth monitoring of the construction process.

[0006] Therefore, there is an urgent need for a new type of modular diaphragm wall construction equipment and construction method to improve construction efficiency and quality. Summary of the Invention

[0007] The present invention provides a modular diaphragm wall construction equipment and a construction method to solve the technical problems existing in the known technology, which can improve construction efficiency and quality.

[0008] The first technical solution adopted by the present invention to solve the technical problems existing in the known technology is: a modular diaphragm wall construction equipment, including a main machine and a set of standard cutting box sections. The adjacent two standard cutting box sections are connected by a cross hinge. The equipment also includes a control system and a guiding frame. The guiding frame is arranged on both sides of the diaphragm wall groove opening. A GPS module and a gyroscope are provided in the lowermost standard cutting box section. A plurality of wireless stress sensors distributed in an array are provided in each standard cutting box section. The control system adopts a PID algorithm closed-loop control to adjust the hydraulic cylinder pressure of the main machine according to the bending moment and contact pressure information obtained by the wireless stress sensors, the position coordinates obtained by the GPS module, and the attitude information obtained by the gyroscope.

[0009] There are two guiding frames.

[0010] The guiding frame is provided with a bottom plate. A construction hole is provided in the middle of the bottom plate. A set of columns are respectively provided on both sides of the bottom plate. A side top plate is provided on each set of columns. A set of multiple position-adjustable "L"-shaped guiding plates are installed on each side top plate.

[0011] The guiding frame is provided with two symmetric front and rear parts, which are connected by high-strength bolts.

[0012] An installation seat is arranged on the bottom plate, and an attitude monitor is installed on the installation seat.

[0013] The second technical solution adopted by the present invention to solve the technical problems existing in the known technology is: a construction method using the above modular diaphragm wall construction equipment, including the following steps:

[0014] S1. Construction preparation and measurement positioning

[0015] Level the site according to the design drawings, and use a total station to measure and lay out the construction axis; lay out the installation reference points of the guiding frame;

[0016] S2. Installation and adjustment of the guiding frame

[0017] Install the guiding frame at the designed position of the diaphragm wall, make the longitudinal center line of the construction hole coincide with the designed axis of the diaphragm wall, and adjust the verticality and horizontality to ensure that the installation accuracy is within ±2mm / m;

[0018] S3. Groove cutting

[0019] Start the hydraulic drive system of the main machine, control the cutting box standard section to move vertically along the guide frame, and the cutting box standard section with GPS is pressed into the slot body first. During the slot cutting process, the cutting box standard section is assembled and adjusted in posture. During the cutting process, the GPS continuously collects the position information of the lowest cutting box standard section, the gyroscope obtains the posture parameters, and the wireless stress sensor obtains the bending moment and contact pressure information of the corresponding cutting box standard section. The control system uses the PID algorithm to adjust the hydraulic cylinder pressure of the main machine in real time according to the data transmitted by the GPS, gyroscope and wireless stress sensor, so as to correct the cutting trajectory of the cutter disc and dynamically match it with the preset path.

[0020] S4. Cutting of the next slot segment

[0021] After completing the construction of the current slot section, transfer the main machine and the cutting box standard section group to the set slot section and repeat step S3.

[0022] S5. Repeat step S4 until the underground continuous wall construction is completed and adjacent trench sections are overlapped.

[0023] The method uses two guide frames, and before step S4, the second guide frame is installed to the set slot section.

[0024] The advantages and positive effects of the present invention are:

[0025] 1) The present invention adopts modular design - segmented cutting box and detachable guide frame, so that the equipment can be quickly assembled, disassembled and turned over, reducing the idle time of equipment and improving construction efficiency.

[0026] 2) The guide frame adopts a split symmetrical structure and is connected by a high-strength bolt group to form a stable operating structure, which reduces vibration and deviation during construction. It is also easy to adjust and calibrate, ensuring that the cutting verticality error is ≤±2mm / m and improving the grooving accuracy.

[0027] 3) The standard sections of the cutting box are connected by cross hinges, which can achieve 0-90° inclination adjustment. Combined with the wireless stress sensor array, real-time feedback of the box bending moment and contact pressure is provided, so that the control system can dynamically adjust the box cutting posture in real time to avoid structural overload and improve construction safety and adaptability.

[0028] 4) The present invention integrates high-precision GPS and gyroscopes to collect the three-dimensional coordinates and posture data of the cutting box in real time, and automatically adjusts the hydraulic drive mechanism through the PID algorithm to ensure that the cutting trajectory is consistent with the design parameters, reduce human errors, and improve the level of automation.

[0029] In summary, through the modularization and intelligentization of the construction equipment, the present invention solves the technical problems of low construction efficiency, poor accuracy, and weak equipment coordination ability in traditional diaphragm wall construction. It has the advantages of flexible structure, high safety, high degree of automation, and can adapt to complex geological conditions. It can be applied to various diaphragm wall projects, especially deep foundation pits and complex geological environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a top view of the construction equipment of the present invention;

[0031] Figure 2 is a three-dimensional view of the guiding frame in the equipment of the present invention;

[0032] Figure 3 is a connection schematic diagram between standard sections of the cutting box body in the equipment of the present invention,

[0033] Figure 4 is a schematic diagram of the standard section of the cutting box body in the equipment of the present invention.

[0034] In the figure: 1, guiding frame; 1-1, bottom plate; 1-2, construction hole; 1-3, column; 1-4, side top plate; 1-5, guiding plate; 1-6, mounting seat; 2, standard section of cutting box body; 3, cross hinge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to further understand the content, features and effects of the present invention, the following embodiments are cited and described in detail with reference to the accompanying drawings:

[0036] Please refer to Figures 1 to 4 , a modular diaphragm wall construction equipment, including a main machine (not shown in the figure) and a group of cutting box body standard sections 2 including multiple sections. Adjacent two cutting box body standard sections 2 are connected by a cross hinge 3. The equipment further includes a control system and a guiding frame 1. The guiding frame 1 is arranged on both sides of the diaphragm wall groove opening. A GPS module and a gyroscope are arranged in the cutting box body standard section at the lowest position. A plurality of wireless stress sensors are arranged in an array in each cutting box body standard section. The control system uses the PID algorithm to close-loop control and adjust the hydraulic cylinder pressure of the main machine according to the bending moment and contact pressure information obtained by the wireless stress sensors, the position coordinates obtained by the GPS module, and the attitude information obtained by the gyroscope.

[0037] A more preferred solution of this embodiment is as follows:

[0038] There are two guiding frames 1, which are used alternately during construction, and the construction efficiency can be improved.

[0039] The guiding frame 1 is provided with a bottom plate 1-1, a construction hole 1-2 is arranged in the middle of the bottom plate 1-1, a group of columns 1-3 are respectively arranged on both sides of the bottom plate 1-1, a side top plate 1-4 is arranged on each group of columns 1-3, and a group of position-adjustable "L"-shaped guiding plates 1-5 including multiple ones are installed on each side top plate 1-4. The adjustable guiding plates can provide precise guidance for the cutting box standard section, and the "L"-shaped guiding plates are easy to install.

[0040] The guiding frame 1 is provided with two symmetric front and rear parts, which are connected by high-strength bolts, facilitating transportation and transfer.

[0041] An installation seat 1-6 is arranged on the bottom plate 1-1, and an attitude monitor is installed on the installation seat 1-6, facilitating the monitoring of the attitude when the cutting box standard section is pressed down.

[0042] A construction method using the above modularized diaphragm wall construction equipment includes the following steps:

[0043] S1. Construction preparation and measurement positioning

[0044] Level the site according to the design drawings, and use a total station to measure and lay out the construction axis; set up the installation reference points of the guiding frame for subsequent precise positioning of the guiding frame and cutting equipment.

[0045] S2. Installation and adjustment of the guiding frame

[0046] Install the guiding frame at the design position of the diaphragm wall, make the longitudinal center line of the construction hole coincide with the design axis of the diaphragm wall, adjust the verticality and horizontality, and use a laser displacement meter and a gyroscope to calibrate the verticality and horizontality of the guiding frame to ensure that the installation accuracy is within ±2mm / m.

[0047] S3. Groove cutting

[0048] Start the hydraulic drive system of the main machine, control the cutting box standard section to vertically advance along the guiding frame, and the cutting box standard section with GPS is the first to be pressed into the groove. During the groove cutting process, complete the assembly and attitude adjustment of the cutting box standard section. During the cutting process, GPS continuously collects the position information of the lowermost cutting box standard section, the gyroscope obtains the attitude parameters, and the wireless stress sensor obtains the bending moment and contact pressure information of the corresponding cutting box standard section. The control system uses the PID algorithm to adjust the hydraulic cylinder pressure of the main machine in real time according to the data transmitted by GPS, the gyroscope and the wireless stress sensor to correct the cutting trajectory of the cutter head and make it dynamically match the preset path. The control system dynamically adjusts the hydraulic drive mechanism based on the feedback to complete the attitude correction.

[0049] S4. Cutting of the next groove section

[0050] After the construction of the current groove section is completed, transfer the main machine and the standard section group of the cutting box body to the set groove section, and repeat step S3.

[0051] S5. Repeat step S4 until the construction of the diaphragm wall is completed, and overlap adjacent groove sections to avoid leakage.

[0052] In a preferred solution, two guiding frames are adopted. Before step S4, install the second guiding frame to the set groove section so that the cutting box body can carry out cutting operations as soon as possible, which can improve the construction efficiency and the utilization rate of the main machine.

[0053] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these fall within the protection scope of the present invention.

Claims

1. A modular diaphragm wall construction equipment, including a main machine and a set of standard cutting box sections, which are connected by a cross hinge between two adjacent standard cutting box sections. It is characterized in that The equipment also includes a control system and a guiding frame. The guiding frame is arranged on both sides of the trench opening of the diaphragm wall. A GPS module and a gyroscope are provided in the standard section of the cutting box body at the lowest position. A plurality of wireless stress sensors distributed in an array are provided in each standard section of the cutting box body. The control system uses the bending moment and contact pressure information obtained by the wireless stress sensors, the position coordinates obtained by the GPS module, and the attitude information obtained by the gyroscope to adopt a PID algorithm for closed-loop control to adjust the hydraulic cylinder pressure of the main machine.

2. The modular diaphragm wall construction equipment according to claim 1, wherein, There are two guiding frames.

3. The modular diaphragm wall construction equipment according to claim 1, characterized in that, The guiding frame is provided with a bottom plate. A construction hole is provided in the middle of the bottom plate. A set of columns is provided on each side of the bottom plate. A side top plate is provided on each set of columns. A set of multiple position-adjustable "L"-shaped guiding plates is installed on each side top plate.

4. The modular diaphragm wall construction equipment according to claim 1, characterized in that, The guiding frame is provided with two symmetric front and rear parts, which are connected by high-strength bolts.

5. The modular diaphragm wall construction equipment according to claim 1, characterized in that, An installation seat is provided on the bottom plate, and an attitude monitor is installed on the installation seat.

6. A construction method using the modular diaphragm wall construction equipment as described in claim 1, including the following steps: S1. Construction preparation and measurement positioning Level the site according to the design drawings, and use a total station to measure and lay out the construction axis; set up the installation reference points for the guiding frame; S2. Installation and adjustment of the guiding frame Install the guiding frame at the designed position of the diaphragm wall, and make the longitudinal center line of the construction hole coincide with the designed axis of the diaphragm wall. Adjust the verticality and horizontality to ensure that the installation accuracy is within ±2 mm / m; S3. Groove cutting Start the hydraulic drive system of the main machine, and control the standard section of the cutting box body to vertically advance along the guiding frame. The first standard section of the cutting box body with GPS is pressed into the groove. During the groove cutting process, complete the assembly and attitude adjustment of the standard section of the cutting box body. During the cutting process, the GPS continuously collects the position information of the lowest standard section of the cutting box body, the gyroscope obtains the attitude parameters, and the wireless stress sensors obtain the bending moment and contact pressure information of the corresponding standard section of the cutting box body. The control system uses the PID algorithm to adjust the hydraulic cylinder pressure of the main machine in real time according to the data transmitted by the GPS, gyroscope, and wireless stress sensors to correct the cutting trajectory of the cutter head and make it dynamically match the preset path; S4. Cutting of the next groove section After completing the construction of the current groove section, transfer the main machine and the cutting box body standard section group to the set groove section, and repeat step S3. S5. Repeat step S4 until the construction of the diaphragm wall is completed and the adjacent groove sections are overlapped.

7. The construction method according to claim 6, characterized in that, This method uses two guiding frames. Before step S4, install the second guiding frame at the set groove section.

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