A construction method for long-distance translation and small-angle rotation of heavy-duty silo groups

Abstract

This invention relates to a construction method for long-distance translation and small-angle rotation of a group of heavy-duty silos. Under the action of vertical lifting force and horizontal traction force provided by a hydraulic synchronous sliding system, the heavy-duty silos slide along a Z-shaped track beam to a new site, rotating midway. After reaching the destination, temporary supports are replaced, the chute and sliding box are removed, and then the simple silo is connected to the foundation. One or more silos need to be translated. The hydraulic synchronous sliding system includes a vertical lifting device and a horizontal traction device. One end of the horizontal traction device is fixed to the front of the sliding box, and the other end is supported on a concrete reaction pier via a connecting steel bar and a horizontal traction jack. The top of the vertical lifting device supports the heavy-duty silos to be translated. Under the action of the horizontal traction force provided by the horizontal traction device, the sliding box drives the heavy-duty silos above it to slide along the chute. On the raft track beam between the old and new track beams, it rotates to the required angle with the help of a rotational reaction device. The implementation of translation and rotation of heavy-duty silos has the advantages of high efficiency, stability and reliability.

Description

Technical Field

[0001] This invention belongs to the field of building translation technology, specifically relating to a construction method for long-distance translation and small-angle rotation of heavy-duty silo groups. Background Technology

[0002] Building translation is a highly technical process that closely integrates structural mechanics with geotechnical engineering. Its basic principle is similar to the horizontal movement of heavy objects in crane operations. The main technical steps are: cutting the building at a horizontal plane to separate it from its foundation, making it a movable "heavy object"; installing a support beam at the cut point to form a movable support; installing a new foundation at the new location; setting up a track beam between the old and new foundations; installing a moving mechanism and applying external power to move the building; and finally, dismantling the moving mechanism and connecting the upper and lower structures after positioning, thus completing the translation. Depending on the distance and direction of translation, it can be classified as lateral translation, longitudinal translation, long-distance translation, local relocation, and translation combined with rotation.

[0003] Currently, most successfully moved buildings in China are multi-story buildings, requiring assurance of their safety, reliability, and reusability. However, compared to multi-story buildings, concrete coal storage silos have distinct structural characteristics: a robust structural system, a long service life, strong load-bearing capacity, and excellent seismic resistance. There are no reports of moved coal silos in China. The main reason raw coal silos can be moved is their simple structure, being a single reinforced concrete structure with high overall strength and relatively light weight, meeting all relocation requirements. Compared to moving buildings, moving coal silos is relatively simple. However, the inherent risks must be fully considered, given their height of over 50 meters; therefore, significant risks inevitably exist during relocation, necessitating comprehensive countermeasures. Generally, the relocation of coal storage silos has the following requirements and characteristics:

[0004] (1) The overall relocation of concrete coal storage silos needs to meet the site optimization requirements of the entire mining area. Large silos need to consider the overall environmental optimization and location adjustment route optimization. Moreover, the relocation technology of large silos puts forward requirements for large-tonnage towing, settlement control and relocation equipment systems. It is necessary to carry out the research and development and application of complete sets of technologies in multiple aspects, such as prefabricated recyclable support structure and temporary foundation technology, green dismantling technology of lower track beam and support structure, etc.

[0005] (2) By promoting the application of overall relocation technology in the renovation of concrete coal storage silos, a large amount of concrete, steel bars, formwork and other materials for the construction of new silos can be saved, fully reflecting the green renovation requirements of "four savings and one environmental protection". The overall relocation technology integrates the protection of the existing silo body and equipment, and realizes green and low-carbon transformation in the renovation process.

[0006] (3) In response to the pain points of long construction cycles for new concrete coal storage silos and significant resource waste from demolishing old silos, the overall relocation technology can preserve most of the original silo's concrete portion while also protecting the internal equipment. Demolition and reconstruction, on the other hand, require the removal of construction waste, redesign and construction, and follow all construction procedures from foundation work to equipment installation and commissioning, resulting in a longer construction period. Therefore, the overall relocation technology has been fully proven to be the preferred technology for resource conservation, low carbon emissions, environmental protection, time-saving construction, and good overall benefits.

[0007] In conclusion, the industry needs an efficient, stable, and safe method for moving concrete coal storage silos. Summary of the Invention

[0008] Purpose of the invention: In order to overcome the limitations of the prior art, the present invention provides a method for long-distance translation and small-angle rotation of heavy-duty silo groups, which has the advantages of high translational construction efficiency and safety and reliability.

[0009] Technical solution: To achieve the above-mentioned objectives, the main solution of this invention is as follows:

[0010] Step 1: Based on the relative positions and site conditions of the new and old silo sites, and considering the overall construction cost of the silo group's relocation, the following general approach for the relocation and rotation of the heavy-duty silo group is proposed: ① Determine the cutting points of the silos to facilitate the construction of the upper and lower track beams required for the relocation, while ensuring the stress requirements of the silos after they are moved to the new site; ② The long-distance relocation of the silo group adopts a sliding method, with multiple silos sharing the lower track beam; ③ The rotation of the silo group adopts a method of rotating each silo individually, sharing a small-angle rotation platform for each silo.

[0011] Step 2: Develop a design scheme for the translation and rotation of the heavy-duty silo group, including: ① Design of the upper and lower track beams for silo translation; ② Design of the hydraulic synchronous sliding system for silo translation; ③ Design of the synchronous traction system for small-angle silo rotation; ④ Design of the reaction device for translation traction and rotation traction; ⑤ Design of temporary support for the silo force system replacement; ⑥ Design of the connection between the old silos and the new foundation after the silos are translated to the new site; ⑦ Inspection and monitoring scheme for the silo cutting, translation, rotation and positioning stages.

[0012] Step 3: Civil engineering work before silo cutting, including: ① Construction of upper and lower track beams for the entire translation area; ② Construction of horizontal traction concrete reaction piers; ③ Construction of embedded parts for the silo rotation reaction device.

[0013] Step 4: After the concrete from the civil engineering work in Step 3 meets the requirements, the silo will be cut and temporarily supported.

[0014] A construction method for long-distance translation and small-angle rotation of heavy-duty silo groups, comprising the following steps:

[0015] Preliminary preparation → Construction preparation → Demolition of silo ancillary structures → Earthwork excavation → Pile foundation engineering → Concrete engineering → Underpinning engineering → Cutting engineering → Relocation of C1 silo → Relocation of B1 silo → Relocation of A1 silo → Construction of new site connection for C1 silo → Construction of new site connection for B1 silo → Construction of new site connection for A1 silo → Demolition engineering → Backfilling and restoration → Site clearing and exit.

[0016] A construction method for long-distance translation and small-angle rotation of heavy-duty silos is disclosed. This method, taking into account the structural characteristics of the silos, rationally sets the elevation for cutting the silo walls to ensure that after the translation is completed and the internal and external earthwork is backfilled, the top elevation of the upper track beam is below the ground level. In this embodiment, the main body is disconnected from the foundation at -2.800m, the lower track beam is installed at an elevation of -3.200, and the upper support beam, 1.2m high, is installed at an elevation of -2.800. Real-time monitoring is conducted during the cutting, translation, and rotation of the silos to ensure the safety of the silos under stress and the accuracy of their placement.

[0017] Moving and rotating all three silos simultaneously would require a large rotation area, resulting in significant engineering work on pile foundations and track beams. Furthermore, these track beams would need to be dismantled later. To save on project costs, a method of sliding and rotating the three silos one by one was adopted for their placement.

[0018] The vertical support points for the sliding of a single silo are mainly set at equal intervals along the silo wall, with a total of 8 main vertical support points. In addition, considering that the silo wall span reaches 22m, a vertical support point is set at the mid-span of the upper track beam, that is, a total of 9 vertical support points are set during the overall translation of the silo. Corresponding to the 9 vertical support points of the silo, a total of 5 sliding track beams are set to ensure that each vertical support point rests on the sliding track beam during the sliding process.

[0019] A U-shaped chute is laid on the top surface of the lower track beam, and a special sliding box is installed at the vertical support point. The sliding box is synchronously pulled by traction jacks on the outside of the silo and on the top surface of the lower track beam. The U-shaped chute serves a dual function of guiding and limiting. Due to the long translation distance, laying the U-shaped chute all at once would increase the project cost. Therefore, the U-shaped chute is designed as a standard component that can be reused and a non-standard component for local areas.

[0020] For rotation, four steering brackets are installed at four quarter points on the outer side of the silo wall, at the corresponding elevation of the upper track beam. On the top surface of the lower track beam, tangentially to the four steering brackets, four steering traction reaction devices are installed. These reaction devices are constructed using embedded plates. After the silo is moved into position, the traction reaction steel frame is welded. Following welding, rotation traction jacks are installed. The rotation traction jacks are then synchronously controlled to achieve small-angle rotation of the silo.

[0021] Beneficial effects

[0022] (1) In view of the structural characteristics of the building treated by this invention and the need for small-angle rotation during translation, a single-point support slide box and lightweight matching slide rail suitable for the overall translation of the silo were developed. This facilitates the manual laying of lightweight slide rails under the existing silo and enables the rapid connection and installation of multiple slide boxes on a single rail. At the same time, through the optimized design of the sliding surface between the slide box and the slide rail, the advantages and disadvantages of sliding friction and rolling friction were compared and analyzed. The preferred sliding surface structure with a small friction coefficient that is easy to implement on site was selected to reduce the translation traction force and improve the translation construction efficiency.

[0023] (2) Effective technical measures to ensure the construction quality of the sliding track and the stress safety of the silo in the interference area between the track and the silo wall during the overall translation construction process; research key technical measures such as 90° turning of the silo sliding track, 8.5° rotation of the silo as a whole, temporary placement, horizontal traction, and overall correction after the silo is translated and positioned. Implement multiple construction details before and during the silo translation process to ensure the safety and reliability of multiple construction processes such as translation, rotation, and positioning. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the silo processed in Example 1; wherein

[0025] (A) Front view, (B) Top view, (C) Actual object drawing;

[0026] Figure 2 This is a schematic diagram of the old and new axes in Example 1; the axes of the old and new sites (the axes formed by connecting the centers of multiple silos) have an angle, and the lower track beam slide is designed in three sections;

[0027] Figure 3 The diagram below shows the translational track of the silo processed in Example 1; where: (A) top view, (B) 3D view;

[0028] Figure 4 This is a schematic diagram of the bottom structure of the translation silo section processed in Example 1; where: (A) top view, (B) a partial 3D internal view of the silo;

[0029] Figure 5 This is a schematic diagram of the small-angle rotating platform area of ​​the silo;

[0030] Figure 6 This is a schematic diagram of the silo rotating on the raft slide 4; where: (A) front view, (B) top view;

[0031] Figure 7 This is a schematic diagram of the temporary support arrangement for the silo; where:

[0032] (A) Temporary support arrangement after the completion of the first phase of translation;

[0033] (B) Temporary support arrangement after rotation;

[0034] Figure 8 This is a flowchart of the silo translation and rotation construction process in Example 1.

[0035] Figure 9 This is a schematic diagram of the sliding box structure; where (A) is a 3D view and (B) is a top view.

[0036] Figure 10 Schematic diagram of MGB board;

[0037] Figure 11 This is a front view of the chute.

[0038] Explanation of key reference numerals in the accompanying drawings:

[0039] 1-Silo A1 at the old site, 2-Silo B1 at the old site, 3-Silo C1 at the old site, 1'-Silo A1 at the new site, 2'-Silo B1 at the new site, 3'-Silo C1 at the new site;

[0040] C-Axis of the former site of the silo complex, D-Axis of the former site of the silo complex;

[0041] 4-Raft slide, 5-Traction reaction block, 6-Slide box, 7-Temporary support;

[0042] 10-Lower track beam A, 11-Lower track beam B;

[0043] 16-Original silo wall, 17-Anchoring bracket, 18-Rotating traction reaction frame, 19-Rotating traction steel strand, 20-Rotating traction jack, 21-Rotating platform embedded part, 22-Countersunk screw hole, 23-Lifting jack, 23-Connecting steel bar installation hole;

[0044] 51-Silo hopper support center column 1, 52-Silo hopper support column 2, 53-Silo wall column 1, 54-Silo wall column 2;

[0045] 61-Silo floor surface, 62-Expansion joint between silo A1 and silo B1, 63-Expansion joint between silo B1 and silo C1, 64-Foundation of silo A1, 65-Foundation of silo B1, 66-Foundation of silo C1;

[0046] 67 - Upper track beam of the silo translation section; 68 - Bottom reinforcing ring beam of the silo translation section; 69 - Platform plate of the rotating platform area. Detailed Implementation

[0047] The technical solution of the present invention will be described below with reference to specific embodiments:

[0048] Example 1

[0049] The raw coal silos of a coal preparation plant's dynamic screening and refined coal storage system, belonging to the mine section, were completed in 2013. This system is for disposing of large chunks of gangue. At that time, three raw coal silos were built, each with a diameter of 21 meters, a foundation bottom elevation of -7.200m, and a storage capacity of 10,000 tons per silo, for a total storage capacity of 30,000 tons. Currently, the raw coal silos are in good working order and have a complete structure. The foundation uses bored piles with a designed pile diameter of 1.5m and a pile length of approximately 15m. The pile tip penetrates at least 4.5m into four layers of moderately weathered rock. The vertical bearing capacity of a single pile is 9000kN. Each coal silo has 33 piles. The supporting structure under the silos uses columns and pilasters. The cylinder and silo body are constructed of 350mm thick reinforced concrete. A funnel platform is located at an elevation of 8.800m, and equipment rooms are located above an elevation of 42.780m. See details. Figure 1 , 2 .

[0050] In this embodiment, the coordinates of the new locations of the three relocated coal bunkers have been determined, as follows:

[0051] The coordinates of silo A1 at the new site are: X1=4090135.006, Y1=19563390.772

[0052] The coordinates of silo B1 at the new site are: X2=4090108.302, Y2=19563394.763

[0053] The coordinates of silo C1 at the new site are: X3=4090081.599, Y3=19563398.754.

[0054] Based on the coordinates of the old and new coal bunkers, the distance between them is 96 meters, and the leveling elevation is the same, with a turning angle of about 8.5°.

[0055] The overall construction plan is as follows: Preliminary preparation → Construction preparation → Demolition of silo ancillary structures → Earthwork excavation → Pile foundation engineering → Concrete engineering → Underpinning engineering → Cutting engineering → Relocation of silo C1 at the old site → Relocation of silo B1 at the old site → Relocation of silo A1 at the old site → Connection construction of silo C1 at the new site → Connection construction of silo B1 at the new site → Connection construction of silo A1 at the new site → Demolition engineering → Backfilling and restoration → Site clearing and exit.

[0056] In this embodiment, there are a total of 3 coal bunkers that need to be relocated. This is just an example. When only one or more coal bunkers need to be moved, only the old silo C1, the old silo C1+B1, or the old silo C1+B1+A1 at the original site are moved during the above-mentioned construction process.

[0057] 1. The silos at the old site were disconnected from the original structure and equipment.

[0058] Reference Figure 1 ,2 As shown, in this embodiment, the silos are moved. Before the movement, the connection between the three silos at the original site and the foundation (foundation 65 of silo B1 and foundation 66 of silo C1) needs to be disconnected. The expansion joints between the walls of the three silos (expansion joint 62 between silo A1 and silo B1 at the original site and expansion joint 63 between silo B1 and silo C1) should be cleaned accordingly to ensure that each silo is an independent structure. The conveyor belt, steel platform and equipment attached to the ground at the bottom need to be removed, and the top trestle bridge needs to be cut and removed.

[0059] The cylinder wall is reinforced by increasing its cross-section. Once the concrete strength of the lower track beam A (B) reaches its design strength, the sliding box can be placed, and the cylinder wall and columns (silo hopper support center column 1, silo hopper support column 2, silo wall column 1, and silo wall column 2) will be cut to transfer all the load of the structure to the support nodes. Cutting will be carried out before relocation. Depending on the construction progress, cutting can be done using a diamond chainsaw and manual labor. Cutting should be carried out symmetrically at intervals, and the structure should be closely observed for settlement, tilting, or other abnormalities during cutting.

[0060] Before dismantling the top trestle, a full-span scaffold should be erected below for temporary support. The scaffold should be ground-mounted. The trestle should be dismantled in sections by cutting and hoisting. First, the upper part should be disconnected from the silo and auxiliary buildings. Then, it should be cut into sections from the highest point. A 25T crane should be used for hoisting during the cutting. After cutting, it should be hoisted directly to the ground for dismantling and then transported out of the site.

[0061] Reference Figure 3 , 4 As shown, the axis between the new and old sites of the silo complex (see...) Figure 3 (B) The axis C and axis D of the old site of the silo group have an angle. The lower track beam slide is designed to be three sections. The lower track beam A is set between the old site of the silo group and the lower track beam of the raft slide. The lower track beam B is set between the new site of the silo group and the lower track beam of the raft slide. The lower track beam of the raft slide is set between the lower track beam A and the lower track beam B. The three lower track beams are in a "Z" shape. The track beams are equipped with slides. Each silo in the silo group is translated by using the slides above the lower track beam A, the raft slide track beam and the lower track beam B. At the same time, a small-angle rotation platform area for the silo is set in the intersection area of ​​the raft slide and the lower track beam B. Each silo in the silo group is translated to the rotation platform area and then rotates.

[0062] The silo weighs approximately 6200 tons and is planned to be moved using five sliding tracks. (See details...) Figure 3 , 4As shown, the static friction coefficient of the silo is approximately 0.15 when it changes from a static state to a sliding state, and the starting force is approximately 930 tons. The sliding equipment of the five slides needs to be started synchronously. After calculation and analysis, the sliding force distribution of each slide is determined, and then the "hydraulic synchronous construction technology" is used to slide it to the designated position. When rotating in situ, all slide boxes are tightly pressed together, and anchor steel strands are threaded through the sides. A rotating traction reaction frame is installed at the embedded part to apply tangential rotational force to the silo. The "hydraulic synchronous construction technology" is needed to rotate the silo from its original position by a certain angle.

[0063] II. Before translation, according to Figure 7 The columns and cylinder walls are supported and replaced according to the numbering sequence:

[0064] Column concrete and reinforcement removal → Adding steel plate to the bottom of the column → Slide chute installation → Slide box positioning and preloading with lifting jacks → Installation of upper steel ring on the lifting jacks → Next column. The cylinder wall is cut only after all column supports are replaced.

[0065] III. The main steps of the silo translation and rotation construction process in this plan are as follows:

[0066] Step 1: As Figure 8 (1) shows the installation of the track beam chute and hydraulic synchronous sliding system, and the preparation work for the sliding of silo C1;

[0067] like Figure 8 As shown in (2), the silo C1 slides along the chute on the lower track beam to the raft slide 4, with a sliding distance of about 23m. After it is in place, the silo C1 is temporarily fixed. This is the first temporary resting point.

[0068] Reference Figure 8 (3) (4) 90° turn of sled and sliding box for silo C1: After silo C1 is moved to the first resting point, the connecting steel bar and horizontal traction jack are removed, and temporary support points are set at the silo wall position; after all the support is completed, the vertical lifting jacks in all sliding boxes are used for unloading; after unloading, the sled and sliding box are turned 90°, and after the turn, the connecting steel bar and horizontal traction jack are installed, ready to continue to move along the raft slide.

[0069] The preparation work for the sliding of the silo includes the following steps:

[0070] Step 1.1: Construction of the sliding lower track beam and traction reaction pier is completed;

[0071] Step 1.2: Construction of the bottom reinforcing ring beam and upper track beam of silo C1 is completed;

[0072] Step 1.3: The upper and lower track beams of silo C1 are cut simultaneously;

[0073] Step 1.4: Lay chutes on top of the 5 lower track beams; install sliding boxes under the 8 silo wall columns and the silo center column (silo hopper support center column 1, silo hopper support column 2, silo wall column 1, silo wall column 2) of the simple silo wall, and hoist jacks inside the sliding boxes; the structure of the sliding boxes and chutes is as follows Figures 9-11 As shown, the sliding box contains one or more lifting jacks; the number is determined by the load of the silo to be lifted. The bottom of the sliding box is an MGB plate (see...). Figure 10 The slide box is placed on the slide groove and can move along the slide groove. The contact surface between the two is as free as possible, and the coefficient of friction is about 0.15.

[0074] Step 1.5: Along the forward direction of the silo, install the connecting steel bar on the slide box through the connecting steel bar mounting hole 23. Fix the horizontal traction jack to the other end of the connecting steel bar. The horizontal traction jack is supported behind the traction reaction block. The slide box moves horizontally along the slide groove under the traction force of the horizontal traction jack.

[0075] In the vertical direction, a vertical jacking device is provided, which includes: a vertical jacking jack and a jacking load control box; wherein, the assembly sequence of the vertical jacking device is as follows: the chute is laid to the outside of the silo to leave space for the sliding box to be hoisted → the sliding box is hoisted and placed in the chute → the vertical jacking jack is hoisted → the sliding box is horizontally pulled to the jacking point → the oil pipe of the vertical jacking jack is connected to the jacking load control box. After the vertical jacking device is assembled, the jacking load control box is started to realize the jacking and support of the silo.

[0076] Step 2: Install the hydraulic synchronous sliding system at the end of the raft slide and prepare for the second sliding of silo C1;

[0077] like Figure 8 As shown in (5) and (6), silo C1 slides along the raft slide to the area where the raft slide and the track beam slide B overlap. The sliding distance is about 25m. After reaching the rotation area, silo C1 stops sliding. This is the second temporary rest point. After it is in place, no temporary support is needed. There are still 8 wall columns and the sliding box support of the silo center column.

[0078] Step 3: Install the hydraulic synchronous sliding system of the upper silo C1 of the raft slide and prepare for the rotation of silo C1;

[0079] Reference Figure 8 (7) After silo C1 is moved to the second temporary resting point, a small-angle rotation of silo C1 is performed. The traction points are set along the tangent of the silo, with a total of 4 rotation traction points (see...). Figure 8 During rotation, the slide box rotates together with the silo; the slide here uses a planar unit, that is, no lateral conduit is provided. Silo C1 rotates about 8.5° on the raft slide, and after it is in place, silo C1 is temporarily fixed.

[0080] Reference Figure 5 , 6 As shown in Figure 7, the rotating traction reaction frame 18 is welded and installed on the pre-embedded part 21 of the rotating reaction device in the small-angle rotating platform area; the silo rotates horizontally to the required angle in the rotating platform area. During horizontal rotation, the vertical lifting jacks inside the sliding boxes at all lifting points are in a tightened state, and there are no other temporary supports at the bottom of the silo. Four anchor brackets 17 are set on the outer side of the quarter point of the bottom conversion ring beam of the silo. The anchor brackets are the anchor ends of the steel strands for rotational traction. Rotational traction reaction frames 18 are welded at the anchor brackets in the tangential direction of the silo and at the embedded parts 21 of the rotating platform to apply tangential rotational force to the silo. Hydraulic synchronous control technology is used to rotate the silo horizontally to the required angle. Before rotation, all connecting steel bars on the sliding boxes are removed. During rotation, the sliding boxes are driven by the silo to slide on the slide plate laid in the rotating platform area. After rotation, temporary supports are installed on the silo. After all supports are completed, all sliding boxes are unloaded. After unloading, the sliding boxes are turned to the translation direction of the lower track beam slide B. After turning, the traction connecting steel bars and horizontal traction jacks are installed to prepare for the next stage of translation.

[0081] Step 4: Install the hydraulic synchronous sliding system at the B end of the track beam slide and prepare for the third sliding of silo C1;

[0082] After the silo C1 has rotated, the sliding box is turned and the chute is laid: After the silo C1 has rotated at the second temporary rest point, the temporary support of the silo C1 is replaced. After all the temporary support pads are completed, the vertical lifting jacks of the sliding box are unloaded. After unloading, the sliding box is turned and the chute is laid in preparation for the continued horizontal movement.

[0083] Silo C1 is slid to its new location via track beam B, a distance of approximately 78m. After silo C1 is in place, temporary supports are installed, the chute and sliding box are removed, and then the silo is connected to the foundation.

[0084] Step 5: Repeat steps 1 to 4 above, and translate and rotate silos B1 and A1 one by one; for long-distance translation of the silo group, translate one by one, and multiple silos share the lower track beam; for rotation of the silo group, rotate the silos one by one, and share the small-angle rotation platform of a single silo.

[0085] Step 6: After all silos have been moved horizontally, dismantle the hydraulic sliding system of the track beam slide.

[0086] IV. The hydraulic sliding system involved

[0087] 1. Sliding equipment: Sliding equipment includes sliding boxes, sliding chutes, concrete reaction piers, precision rolled threaded steel bars, steering equipment, and hydraulic through-hole jacks.

[0088] (1) Slide box

[0089] The sliding boxes are mainly installed below the eight wall columns and the central column of the silo for traction and sliding. In this embodiment, each sliding box for the silo includes four 350T, 50mm stroke hydraulic jacks, a box body, and an MGB plate. One sliding box is set at each stress point, for a total of nine boxes.

[0090] The MGB plate is located at the bottom of the slide box, and its main function is to reduce the friction between the steel plates. The MGB plate is embedded 20mm inward and has an oil groove filled with lithium-based ester lubricating oil.

[0091] (2) Slide Groove: The slide groove is installed on the lower track beam as a sliding track. The material is Q355B. The aforementioned slide is the slide groove; its structure is shown in [reference needed]. Figure 11 .

[0092] (3) Concrete reaction pier: The main function of the concrete reaction pier is to provide support for the horizontal traction jack, and to be cast as a whole with the lower track beam, with a reserved through hole for connecting steel bars.

[0093] (4) Steering equipment: The steering equipment includes a steering chute, steel strands, anchorages, anchoring reaction frames, and tensioning jacks. The function of the steering equipment is to rotate the silo 8.5° at the corresponding point.

[0094] V. Unloading and Replacement Scheme

[0095] After the silo is moved to the new site, the lower sliding shoes of the silo need to be unloaded and replaced.

[0096] After a single silo (C1) is moved to the new site, temporary supports are made by using pads on the top of the silo wall foundation and the top of the foundation beam. The silos are then pulled out one by one. After a single silo is pulled out, pads are immediately used to support it at the silo position. The temporary supports are then pulled out and connected to the silo wall. After the concrete strength of the silo wall reaches the design value, the pads under the column are pulled out and connected to the column.

Claims

1. A construction method for long-distance translation and small-angle rotation of heavy-duty silo groups, characterized in that, The steps are as follows: Step 1: Civil engineering work before silo cutting, including: ① Design and construction of the upper and lower track beams of the entire translation area; ② Construction of horizontal traction concrete reaction piers; ③ Construction of embedded parts for the silo rotation reaction device. Based on the axis of the new and old sites of the silo complex, the lower track beam is designed in three sections. Lower track beam A is located between the original silo site and the raft slide, lower track beam B is located between the new silo site and the raft slide, and the raft track beam is located between lower track beam A and lower track beam B. The three track beams are in a "Z" shape. The track beams are equipped with slides. Each silo in the silo complex translates along the slides of lower track beam A, the raft slide, and lower track beam B. At the same time, a small-angle rotation platform area is set in the intersection area of ​​the raft slide and the lower track beam B. Each silo in the silo complex completes its rotation after translating to the rotation platform area. Step 2: Determine the cutting location of the silo to facilitate the construction of the upper and lower track beams for the silo relocation section, and to ensure the stress requirements after the silo is moved to the new site. After the civil engineering work in Step 1 meets the requirements, proceed with the cutting and temporary support of the silo wall and columns. Step 3: Long-distance translation of the silo group is performed one by one, with multiple silos sharing the lower track beam; rotation of the silo group is performed one by one, with each silo sharing a small-angle rotation platform; the sliding and rotation processes are as follows: Step 3.1: First stage of silo relocation: Install the sliding groove and hydraulic synchronous sliding system on the top surface of the lower track beam A; replace and remove temporary supports of the silo as a whole; under the action of the vertical lifting force and horizontal pulling force provided by the hydraulic synchronous sliding system, the silo slides from the sliding groove on the lower track beam A to the raft slide; after it is in place, temporary supports are installed for the silo. The hydraulic synchronous sliding system includes a vertical lifting device and a horizontal pulling device. One end of the horizontal pulling device is fixed to the front of the sliding box, and the other end is supported on a concrete reaction pier through a connecting steel bar and a horizontal traction jack. The top of the vertical lifting device supports the heavy-duty silo to be moved. Under the action of the horizontal pulling force provided by the horizontal pulling device, the sliding box drives the heavy-duty silo above the sliding box to slide along the sliding groove, thus realizing the translation. Step 3.2: Second stage of silo translation: Install the sluice and hydraulic synchronous sliding system on the top surface of the raft slide; replace and remove temporary supports of the silo as a whole; slide the silo through the raft slide to the small-angle rotation platform area of ​​the individual silo, which is the intersection area of ​​the raft slide and the lower track beam B slide; after it is in place, the silo will not be temporarily supported and will still be supported by the vertical lifting device of the silo. Step 3.3: Small-angle rotation of the silo: Weld and install the rotation traction reaction frame on the embedded parts of the rotation reaction device in the small-angle rotation platform area; install the hydraulic synchronous traction system for small-angle rotation of the silo; rotate the silo horizontally in the rotation platform area to the required angle; and provide temporary support for the silo after it is in place. When the silo rotates horizontally in the small-angle rotating platform area, the vertical lifting jacks in the sliding boxes at all lifting points are in a tightened state, and there are no other temporary supports at the bottom of the silo; four anchor brackets are set on the outer side of the quarter point of the bottom conversion ring beam of the silo, and the anchor brackets are the anchor ends of the steel strands for rotational traction; a rotational traction reaction frame is welded at the anchor brackets in the tangential direction of the silo and at the embedded parts of the rotating platform; a small-angle rotating hydraulic synchronous traction system is installed; a tangential rotational force is applied to the silo, and the silo is rotated horizontally to the required angle using hydraulic synchronous control technology; before rotation, all connecting steel bars on the sliding boxes are removed; during rotation, the sliding boxes are driven by the silo to slide on the slide plate laid in the rotating platform area; after rotation, temporary supports are provided for the silo; after all supports are completed, all sliding boxes are unloaded; after unloading, the sliding boxes are turned to the translation direction of the lower track beam B slide; after turning, the traction connecting steel bars and horizontal traction jacks are installed to prepare for the third stage of translation; Step 3.4: The third stage of silo relocation: Install the chute and hydraulic synchronous sliding system on the top surface of the lower track beam B; replace the entire silo and remove the temporary supports; under the action of the vertical lifting force and horizontal pulling force provided by the hydraulic synchronous sliding system, the silo slides through the chute of the lower track beam B to the new silo site; after arriving at the new location, replace the temporary supports of the silo. Step 3.5: After a single silo is moved to the new site and temporary support is installed, the turnover silo is moved to the next silo using a chute and hydraulic synchronous sliding system, realizing the sequential movement of the silo group; during the next silo movement stage, the connection construction between the old silo and the new foundation of the previous silo is carried out simultaneously.

2. The construction method for long-distance translation and small-angle rotation of heavy-duty silo groups according to claim 1, characterized in that, The number of silos that need to be moved in the silo group is one or more. When the number is more than one, the expansion joints between the silo walls should be cleaned in advance to ensure that each silo is an independent structure.

3. The construction method for long-distance translation and small-angle rotation of heavy-duty silo groups according to claim 1, characterized in that, A lower track beam is poured between the old and new silo positions, and a chute is laid on the lower track beam to construct the lower track beam slide. The number of tracks is determined according to the self-weight of the silo to be moved, and they are set under the main silo wall columns and the silo center column. A sliding box is set on the chute. The sliding box slides on the chute, and the friction coefficient of the contact surface between the two is ≤0.

15.

4. The construction method for long-distance translation and small-angle rotation of heavy-duty silo groups according to claim 1, characterized in that, The vertical lifting device includes: a vertical lifting jack and a lifting load control box; wherein, the assembly sequence of the vertical lifting device is as follows: the chute is laid to the outside of the silo to leave space for the sliding box to be hoisted → the sliding box is hoisted and placed in the chute → the vertical lifting jack is hoisted → the sliding box is horizontally pulled to the lifting point → the oil pipe of the vertical lifting jack is connected to the lifting load control box. After the vertical lifting device is assembled, the lifting load control box is started to realize the lifting and support of the silo. The horizontal traction device includes: a connecting steel bar, a concrete reaction pier, a horizontal traction jack, and a traction load control box; wherein, one end of the connecting steel bar is connected to the sliding box, and the other end passes through the concrete reaction pier and connects to the horizontal traction jack; the concrete reaction pier is located at the end of the lower track beam of the silo translation, is cast together with the lower track beam and is located outside the silo, reliably providing support for the horizontal traction jack; the assembly sequence of the horizontal traction device is as follows: the vertical jacking device is completed → the connecting steel bar is installed → the connecting steel bar passes through the concrete reaction pier → the horizontal traction jack is installed → the oil pipe of the horizontal traction jack is connected to the traction load control box. After the horizontal traction device is assembled, the traction load control box is activated. Under the drive of the horizontal traction jack, the connecting steel bar pulls the sliding box to move along the slide, thereby driving the silo to move.

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