Large-diameter steel casing capable of accurately controlling perpendicularity of measurement and control double-layer positioning frame and construction method

Abstract

The invention relates to a large-diameter steel casing capable of accurately controlling perpendicularity of a measurement and control double-layer positioning frame and a construction method. The construction method comprises the following steps that a hydraulic vibration hammer is lifted to clamp the steel casing through a clamp; the steel casing sinks through the double-layer positioning frame, and the guide adjusting device adjusts the perpendicularity of the steel casing based on data measured by the intelligent tilt angle sensor; the steel casing is lengthened; and the inner supporting frame is lowered into the steel casing, and the chain block and the vibration hammer are arranged on the two sides of the top end of the steel casing correspondingly for deviation correction. The method has the advantages that the inclinometer informatization perpendicularity monitoring technology can measure the perpendicularity of the steel casing in real time, compared with a traditional measurement mode, interference is small, precision is high, the perpendicularity of the steel casing is visualized through software on site, and field measurement convenience is improved; according to the double-layer positioning frame steel casing adjusting technology, a guide adjusting device is used for adjusting a steel casing based on data measured by an intelligent tilt angle sensor.

Description

Technical Field

[0001] The present invention belongs to the field of large-diameter steel casing construction, and particularly relates to a large-diameter steel casing with precise control of the verticality of a measurement and control double-layer positioning frame and a construction method thereof. Background Art

[0002] The requirements for transportation capacity are increasing day by day. In recent years, many large bridge structures have been built, and a lot of useful engineering experience has been obtained. However, due to the complex and changeable construction environment and the huge differences in climate and geological conditions, it is becoming increasingly difficult to ensure the construction quality of the steel casing for bridge pile foundations. As the starting step of the bridge pile foundation project, the accuracy of the plane position and verticality of the steel casing sinking will directly affect the quality and progress of the subsequent pile foundation project. During the construction of traditional large-diameter steel casings, it is difficult to ensure the measurement and control accuracy of the verticality of the steel casing. At the same time, the traditional construction process also has problems such as cumbersome steps and difficult quality assurance. Therefore, it is of great practical significance to study the large-diameter steel casing with precise control of the verticality of an information-based measurement and control double-layer positioning frame and a construction method thereof. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a large-diameter steel casing with precise control of the verticality of a measurement and control double-layer positioning frame and a construction method thereof.

[0004] This construction method for a large-diameter steel casing with precise control of the verticality of an information-based measurement and control double-layer positioning frame includes the following construction steps:

[0005] S1. The hydraulic vibratory hammer hoists and clamps the steel casing through a fixture below.

[0006] S2. The steel casing sinks through the double-layer positioning frame, and the guiding and adjusting device adjusts the verticality of the steel casing based on the data measured by the intelligent inclination sensor.

[0007] S3. A V-shaped groove is constructed at the bottom end of the upper steel casing, and a flat mouth is constructed at the top end of the lower steel casing. The V-shaped groove and the flat mouth are welded to extend the steel casing.

[0008] S4. The internal support frame is lowered into the steel casing, and the chain block and the vibratory hammer are respectively arranged on both sides of the top end of the steel casing for deviation correction.

[0009] Preferably, before the construction of sinking the steel casing with the hydraulic vibratory hammer, an intelligent inclination sensor is installed on the hydraulic vibratory hammer. The lifting equipment hoists the hydraulic vibratory hammer to the construction position through the lifting wire rope and clamps the steel casing through the fixture. During the construction process of vibrating and sinking the steel casing, the intelligent inclination sensor measures, records and uploads the data in real time to the cloud server, and then calculates and converts the real-time verticality data of the lower steel casing.

[0010] Preferably, the intelligent inclination sensor is provided with mounting bayonets around it, and a backing plate is provided at the bottom of the intelligent inclination sensor. The bayonets are fixed through screws and the backing plate, and a transmission antenna is magnetically adsorbed on the backing plate.

[0011] Preferably, in step S2, the frame of the double-layer positioning frame device includes a profiled steel frame beam, a stiffening beam, a vertical support, and a diagonal brace; the guiding and adjusting device includes a thrust box and an arc contact member. A cushion beam is provided below the guiding and adjusting device and fixedly welded to the profiled steel frame beam. During construction, the position of the arc contact member is controlled by the thrust box to adjust the position of the steel casing; a stiffening rib is provided on the profiled steel frame beam below the guiding and adjusting device.

[0012] Preferably, in step S3, first, a V-shaped groove construction is carried out on the joint part of the upper steel casing, and a flat mouth construction is adopted for the joint part of the lower steel casing. Subsequently, I-beam code plates are welded on the outside of the lower steel casing, and the I-beam code plates are in contact support with the upper steel casing by setting steel wedge blocks. A lining pad is installed at the butt joint of the inner wall of the steel casing. Then, the verticality of the upper steel casing is adjusted, and then it is welded and fixed to the lower steel casing, and then the next step of construction is carried out.

[0013] Preferably, when a large deviation occurs during the construction of the steel casing, after using an internal support frame to strengthen the support inside the steel casing, a pulling force is applied to the steel casing through a chain block and a vibratory hammer to correct the deviation so that the gap between the steel casing and the horizontal line is within a reasonable range; a lifting lug is provided at the top of the internal support frame for the lowering and lifting of the support frame.

[0014] Preferably, in step S4, the chain block and the vibratory hammer work synchronously during deviation correction, and a pulling force is applied to the steel casing in three directions to correct the deviation; after the deviation correction is completed, the top of the steel casing is limited by a drilling platform, the internal support frame is lifted out, the chain block is removed, and the steel casing is vibrated and sunk, and finally the steel casing is fixed.

[0015] The information-based measurement and control of the double-layer positioning frame for accurate verticality control of large-diameter steel casings is obtained by any one of the above methods.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1) The present invention proposes an inclination sensor information-based verticality monitoring technology, which can measure the verticality of the steel casing in real time. Compared with the traditional measurement method, it has less interference and higher accuracy. The software is used on-site to visualize the verticality of the steel casing, improving the convenience of on-site measurement.

[0018] 2) The present invention proposes a double-layer positioning frame steel casing adjustment technology. Based on the measurement data of the intelligent inclination sensor, the guiding and adjusting device is used to adjust the steel casing. The construction of the verticality control of the steel casing is simple, and the error of the verticality control is small, which can ensure that the construction accuracy of the steel casing meets the specification requirements.

[0019] 3) The present invention provides a field welding technology for beveling the steel casing and using a backing strip. A V-shaped bevel is constructed at the bottom end of the upper steel casing, and a flat end is constructed at the top end of the lower steel casing. By beveling on one side and using an inner backing strip for welding, the construction difficulty during the butt joint of longer steel casings is reduced, the construction efficiency is improved, and by using an inner backing strip on the inner wall of the steel casing, while ensuring the structural safety of the steel casing, the welding construction quality of the steel casing segments is enhanced.

[0020] 4) The present invention provides a rectification emergency treatment technology for reinforcing the steel casing with an internal support frame. By installing an internal support frame inside the steel casing to prevent the deformation of the casing during the rectification process, and then applying a rectification force with the help of a chain block and a vibratory hammer, on the basis of ensuring structural safety, efficient rectification of the steel casing is achieved, making the overall construction safer and more stable. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the inclination sensor information-based verticality monitoring technology

[0022] Figure 2 It is a schematic diagram of the installation of the intelligent inclination sensor

[0023] Figure 3 It is a top view of the double-layer positioning frame device

[0024] Figure 4 It is a front view of the double-layer positioning frame device

[0025] Figure 5 It is a schematic diagram of the field welding technology for beveling the steel casing and using a backing strip

[0026] Figure 6 It is a top view of the installation of the internal support frame inside the steel casing

[0027] Figure 7 It is a schematic diagram of the rectification emergency treatment technology for reinforcing the steel casing with an internal support frame.

[0028] Description of the reference numerals: 1 - lifting wire rope, 2 - hydraulic vibratory hammer, 3 - intelligent inclination sensor, 4 - clamp, 5 - steel casing, 6 - antenna, 7 - installation bayonet, 8 - backing plate, 9 - profiled steel frame beam, 10 - stiffening beam, 11 - guiding and adjusting device, 12 - thrust box, 13 - arc contact piece, 14 - cushion beam, 15 - stiffening rib, 16 - vertical support, 17 - diagonal brace, 18 - inner wall of the steel casing, 19 - inner backing strip, 20 - V-shaped bevel, 21 - flat end, 22 - upper steel casing, 23 - lower steel casing, 24 - I-beam spacer, 25 - steel wedge block, 26 - weld, 27 - lifting lug, 28 - internal support frame, 29 - chain block, 30 - vibratory hammer. Detailed Description of the Invention

[0029] The present invention will be further described below in conjunction with embodiments. The description of the following embodiments is only for helping to understand the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0030] Embodiment 1

[0031] As an embodiment, as Figures 1 to 7 shown, this construction method for precisely controlling the verticality of a large-diameter steel casing using an information-based measurement and control double-layer positioning frame includes the following construction steps:

[0032] S1. First, before construction, use the supporting screws to fix the mounting bayonet 7 and the backing plate 8 on the intelligent inclination sensor 3, magnetically adsorb the signal transmission antenna 6 on the backing plate 8, and then weld and fix the backing plate 8 at the designated position of the hydraulic vibratory hammer 1. Subsequently, during the construction of sinking the steel casing 5, the lifting equipment uses the lifting wire rope 1 to lift the hydraulic vibratory hammer 2, and clamps the steel casing 5 through the fixture 4 below. Finally, monitor the verticality of the steel casing 5 during the construction process through the intelligent inclination sensor 3 to guide the immediate adjustment of the verticality of the steel casing 5.

[0033] S2. First, use the section steel frame beam 9, stiffening beam 10, vertical support 16, and diagonal brace 17 to weld and fabricate the double-layer positioning frame structure in the factory. Subsequently, fix and weld the bearing beam 14 under the guiding and adjusting device 11 to the section steel frame beam 9. Then, transport the double-layer positioning frame device to the construction site and fix and install it on-site. Finally, based on the data measured by the intelligent inclination sensor 3 during the sinking of the steel casing 5, use the thrust box 12 to adjust and control the position of the end arc contact member 13 to achieve the adjustment of the position of the steel casing 5 and improve the accuracy of the verticality adjustment of the steel casing 5.

[0034] S3. Before the on-site splicing construction of the steel casing, first perform V-groove 20 construction on the joint part of the upper steel casing 22 and flat-mouth 21 construction on the joint part of the lower steel casing 23. Subsequently, weld the I-beam code plate 24 on the outer side of the lower steel casing 23. The I-beam code plate 24 is in contact support with the upper steel casing 22 by setting steel wedge blocks 25. Install the lining pad 19 at the butt joint of the inner wall 18 of the steel casing. Then, adjust the verticality of the upper steel casing 22 and hoist it to the design position, and temporarily fix the upper steel casing 22 and the lower steel casing 23 using spot welding. Finally, perform formal fixed welding, and clean and anti-corrosion treat the joint seam according to the specifications after welding.

[0035] S4. When the steel casing 5 has a large deviation during construction, first fabricate the internal support frame 28, lower the internal support frame 28 to the designated position through the lifting lug 27 at its top to prevent the casing from deforming during deviation correction. Subsequently, set the chain block 29 and the vibratory hammer 30 to the designated positions, apply forces synchronously for deviation correction. Then, after the deviation correction is completed, limit the top of the casing using the drilling platform, lift out the internal support frame 28, remove the chain block 29, and moderately vibrate and sink the steel casing 5. Finally, firmly fix the steel casing and proceed with subsequent construction.

[0036] Embodiment 2

[0037] As another embodiment, this Embodiment 2 is proposed based on Embodiment 1. A more specific construction method for accurately controlling the verticality of a large-diameter steel casing with an information-based measurement and control double-layer positioning frame:

[0038] As Figure 1 、 Figure 2 shown, first fixedly install the intelligent inclination sensor 3 on the backing plate 8 using the supporting screws, adsorb the transmission antenna 6 on the backing plate 8 through the magnetic base at the bottom. Subsequently, install the backing plate 8 on the surface of the hydraulic vibratory hammer 2. Then, start the lifting equipment to lift the hydraulic vibratory hammer 2 to the construction position through the lifting wire rope 1, and clamp the steel casing 5 with the fixture 4 below the hydraulic vibratory hammer 2. Finally, during construction, the intelligent inclination sensor 3 measures and records data in real time and uploads it to the cloud server, and then calculates and converts the real-time verticality data of the lower steel casing 5 to immediately guide the subsequent adjustment of the verticality of the steel casing 5.

[0039] As Figure 3 、 Figure 4 shown, before construction, use the steel section frame beam 9, stiffening beam 10, vertical support 16, and diagonal brace 17 to weld and form the frame of the double-layer positioning frame device. Subsequently, weld and install the guiding and adjusting device 11 to the designated position on the double-layer positioning frame. Then, fixedly install the double-layer positioning frame device as a whole on-site. Finally, during construction, with the data measured by the intelligent inclination sensor 3, use the guiding and adjusting device 11 on the double-layer positioning frame device to adjust the position of the steel casing.

[0040] As Figure 5 shown, before the on-site splicing construction of the steel casing, first use a single-sided V-groove 20 for the splicing part of the upper steel casing 22 and a flat mouth 21 for the lower steel casing 23. Then, weld the I-beam spacer 24 on the outer side of the lower steel casing 23. The I-beam spacer 24 is in contact support with the upper steel casing 22 by the steel wedge block 25, and a lining pad 19 is provided at the welding part on the inner wall 18 of the steel casing. Then, first spot-weld and fix the welding part, and then perform formal fixed welding after shaping. Finally, after welding is completed, clean and anti-corrosion treat the joint according to the specifications.

[0041] AsFigure 6 , Figure 7 As shown, before deviation correction, the inner support frame 28 components are first fabricated, and then lowered to a specified position inside the steel casing 5 to strengthen the overall support. Subsequently, force is applied to the steel casing 5 through the chain hoist 29 and the vibratory hammer 30 for deviation correction to keep the gap between the steel casing 5 and the horizontal line 31 within a reasonable range. Finally, after the deviation correction is completed, the inner support frame 28 is lifted out, the chain hoist 29 is removed, the steel casing 5 is moderately vibrated and sunk, and the steel casing is fixed.

[0042] It should be noted that the same or similar parts in this embodiment and Embodiment 1 can be referred to each other, and will not be elaborated in this application.

[0043] Embodiment 3

[0044] As another embodiment, this Embodiment 3 is proposed on the basis of Embodiments 1 and 2, and is a more specific construction method for accurately controlling the verticality of a large-diameter steel casing with an information-based measurement and control double-layer positioning frame:

[0045] It includes the inclinometer information-based verticality monitoring technology, the double-layer positioning frame steel casing adjustment technology, the steel casing beveling + backing plate on-site welding technology, and the inner support frame reinforcement steel casing deviation correction emergency treatment technology.

[0046] For the inclinometer information-based verticality monitoring technology, before the construction of sinking the steel casing 5 using the hydraulic vibratory hammer 2, an intelligent inclinometer sensor 3 is installed on the hydraulic vibratory hammer 2. The lifting equipment hoists the hydraulic vibratory hammer 2 to the construction position through the lifting wire rope 1, and clamps the steel casing 5 through the fixture 4. During the construction of vibrating and sinking the steel casing 5, the intelligent inclinometer sensor 3 measures and records in real time and uploads the data to the cloud server, and then calculates and converts the real-time verticality data of the lower steel casing 5; the main body of the intelligent inclinometer sensor 3 is fixed on the backing plate 8 by using the supporting screws with the installation bayonet 7, and the transmission antenna 6 is adsorbed on the backing plate 8 through the bottom magnetic adsorption base.

[0047] For the double-layer positioning frame steel casing adjustment technology, before the on-site construction of vibrating and sinking the steel casing 5, the double-layer positioning frame device is fabricated in the factory. During the construction, based on the data measured by the intelligent inclinometer sensor 3, the position of the steel casing is adjusted by using the guiding and adjusting device 11 on the double-layer positioning frame device; the frame of the double-layer positioning frame device is welded by the section steel frame beam 9, the stiffening beam 10, the vertical support 16, and the diagonal brace 17; a cushion beam 14 is fixedly welded to the lower part of the guiding and adjusting device 11 and the section steel frame beam 9. During the construction, the position of the end arc contact member 13 is controlled by adjusting the thrust box 12 to achieve the position adjustment of the steel casing 5; the section steel frame beam 9 below the guiding and adjusting device 11 is provided with stiffeners 15 to improve the bearing capacity of the component.

[0048] For the on-site welding technology of beveling + gasket for steel casing, when the steel casing needs to be lengthened on-site, I-beam plates 24 are welded on the outer side of the lower steel casing 23. Contact support is provided between the I-beam plate 24 and the upper steel casing 22 by arranging steel wedge blocks 25. The lengthening part of the upper steel casing 22 adopts a single-sided V-shaped groove 20, and the lower steel casing 23 adopts a flat end 21. An inner gasket 19 is provided at the welding part on the inner wall 18 of the steel casing. During welding, it is first fixed by spot welding, and then formal fixed welding is carried out after shaping. After meeting the requirements, the next construction step is carried out.

[0049] For the emergency treatment technology of reinforcing the steel casing deviation correction with an internal support frame, when the steel casing 5 suddenly deviates during the construction process, the internal support frame 28 is used to strengthen the support inside the steel casing 5, and then a pulling force is applied to the steel casing 5 through a chain block 29 and a vibratory hammer 30 to correct the deviation so that the gap between the steel casing 5 and the horizontal line 31 is within a reasonable range; a lifting lug 27 component is provided at the top of the internal support frame 28 for the lowering and lifting of the support frame 28; the chain block 29 and the vibratory hammer 30 work synchronously during deviation correction, and a force is applied to the steel casing 5 in three directions to correct the deviation.

[0050] Furthermore, the intelligent inclination sensor 3 is equipped with a built-in lithium battery and a mobile data module, and can visually display the measurement data through software.

[0051] Furthermore, the size of the end arc contact part 13 is made according to the outer arc of the steel casing 5 and is made of nylon material.

[0052] Furthermore, the lengthening part of the upper steel casing 22 adopts a single-sided V-shaped groove 20, and the slope is controlled at about 45°. Carbon dioxide gas shielded welding is used for welding.

[0053] Furthermore, during the deviation correction construction process of the steel casing 5, multiple measuring points need to be arranged to monitor the perpendicularity of the deviation-corrected steel casing 5 in real time.

[0054] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

Claims

1. A construction method for accurately controlling the verticality of a large-diameter steel casing by using an information-based measurement and control double-layer positioning frame, characterized in that: The construction steps include: S1. Hydraulic vibratory hammer lifts the steel casing from below and clamps it with a clamp; S2, the steel casing sinks through the double-layer positioning frame, and the guide adjustment device adjusts the verticality of the steel casing based on the data measured by the intelligent inclination sensor; S3. A V-shaped groove is constructed at the bottom of the upper steel casing, and a flat groove is constructed at the top of the lower steel casing. The V-shaped groove and flat groove are welded to form a long steel casing. S4. Lower the inner support frame into the steel casing, and set the hand winch and vibratory hammer on both sides of the top of the steel casing to correct the deviation.

2. The construction method of accurately controlling the verticality of a large-diameter steel casing by using an information-based measurement and control double-layer positioning frame according to claim 1 is characterized in that: Before using a hydraulic vibratory hammer to sink steel casing, an intelligent inclination sensor is installed on the hydraulic vibratory hammer. The lifting equipment lifts the hydraulic vibratory hammer to the construction position through the lifting wire rope, and clamps the steel casing with a clamp. During the construction process of vibrating and sinking the steel casing, the intelligent inclination sensor measures and records in real time and uploads it to the cloud server, thereby calculating and converting the real-time verticality data of the steel casing below.

3. The construction method of accurately controlling the verticality of a large-diameter steel casing by using an information-based measurement and control double-layer positioning frame according to claim 2 is characterized in that: The intelligent inclination sensor is provided with mounting bayonet holes around its periphery, a pad is provided at its bottom, the bayonet holes are fixed by screws and the pad, and a transmission antenna is adsorbed on the pad by magnetic attraction.

4. The construction method of accurately controlling the verticality of a large-diameter steel casing by using an information-based measurement and control double-layer positioning frame according to claim 1 is characterized in that: In step S2, the frame of the double-layer positioning frame device includes a steel frame beam, a stiffening beam, a vertical support and a diagonal brace; the guide adjustment device includes a thrust box and an arc contact piece, and a cushion beam is provided below the guide adjustment device and fixedly welded to the steel frame beam. During construction, the position of the arc contact piece is controlled by the thrust box to adjust the position of the steel casing; the steel frame beam below the guide adjustment device is provided with stiffening ribs.

5. The construction method of accurately controlling the verticality of a large-diameter steel casing by using an information-based measurement and control double-layer positioning frame according to claim 1 is characterized in that: In step S3, firstly, a V-shaped groove is constructed on the joint of the upper steel casing, and a flat groove is used on the joint of the lower steel casing. Then, an I-beam code plate is welded on the outside of the lower steel casing. A steel wedge is provided between the I-beam code plate and the upper steel casing for contact support. An inner liner is installed at the joint of the inner wall of the steel casing. Then, the verticality of the upper steel casing is adjusted, and then it is welded and fixed to the lower steel casing, and then the next step of construction is carried out.

6. The construction method of large-diameter steel casing with accurate verticality control of double-layer positioning frame by information-based measurement and control according to claim 1 is characterized in that: When a large deviation occurs during the construction of the steel casing, an internal support frame is used to strengthen the support inside the steel casing, and then a hand winch and a vibrating hammer are used to apply force to the steel casing to correct the deviation so that the gap between the steel casing and the horizontal line is within a reasonable range; a lifting lug is provided on the top of the internal support frame for lowering and lifting the support frame.

7. The construction method of accurately controlling the verticality of a large-diameter steel casing by using an information-based measurement and control double-layer positioning frame according to claim 1 is characterized in that: In step S4, the hand winch and the vibratory hammer work synchronously during the correction, applying force in three directions to the steel casing for correction; after the correction is completed, the top of the steel casing is limited by the drilling platform, the inner support frame is hoisted out, the hand winch is removed, and the steel casing is vibrated and sunk, and finally the steel casing is fixed.

8. The information-based measurement and control double-layer positioning frame accurately controls the verticality of large-diameter steel casing, which is characterized by: Obtained by the method according to any one of claims 1 to 7.

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