Bailey beam protection system

Abstract

The utility model discloses a bailey beam protection system which comprises a bailey beam truss, cross beams are fixedly connected to the bottoms of the two ends of the bailey beam truss, a plurality of stand columns are fixedly connected to the bottoms of the cross beams, a plurality of suspension beams are fixedly connected to the top of the bailey beam truss, and suspension ropes used for suspending underground pipelines are fixedly connected to the suspension beams. A safe and feasible technical scheme and a whole set of process parameters and technical parameters are formed by adopting a pipeline protection system formed by matching the bailey beam truss, the cross beam and the suspension beam with the suspension rope, and the purpose of safe construction is achieved through field practice and final successful implementation; repeatable successful experience is provided for follow-up similar project construction, and huge economic and social benefits are brought to projects and enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal construction, in particular to a Bailey beam protection system. Background Art

[0002] In municipal engineering construction, due to the complex underground conditions, involving municipal pipelines such as water supply, power supply, communication pipelines, drainage, sewage, gas, and various underground structures, the construction conditions are complex and the safety risks are relatively high. From the beginning of earth excavation to the completion of backfilling at the later stage, the entire stage involves deep foundation pit excavation, support and precipitation, finished product protection of various pipelines, construction safety of foundation and main structure, and quality control of fertilizer tank backfilling. The construction of each sub-project requires foolproof standards and a safety awareness of the possibility of making a mistake. Therefore, in municipal engineering construction, especially in the complex conditions of municipal areas that have been completed and put into use, each project or each area faces different situations. Therefore, there is an urgent need for a protection system that can support complex underground pipelines to ensure the safe construction of construction personnel in complex underground conditions.

[0003] Therefore, a Bailey beam protection system is proposed. Utility Model Content

[0004] The purpose of the present invention is to provide a Bailey beam protection system, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0006] A Bailey beam protection system includes a Bailey beam truss, wherein the bottoms of both ends of the Bailey beam truss are fixedly connected to cross beams, the bottoms of the cross beams are fixedly connected to a plurality of columns, the top of the Bailey beam truss is fixedly connected to a plurality of suspension beams, and the suspension beams are fixedly connected to suspension ropes for suspending underground pipelines.

[0007] In a Bailey beam protection system according to the utility model, the suspension rope includes a first steel wire rope, the first steel wire rope is arranged in a U shape, the tops of both ends of the first steel wire rope are connected to the second steel wire rope through basket bolts, and the upper end of the second steel wire rope is fixedly connected to the suspension beam.

[0008] In a Bailey beam protection system according to the utility model, the Bailey beam truss is formed by splicing a plurality of single-row Bailey beams.

[0009] In a Bailey beam protection system according to the present invention, the distance between two adjacent suspension beams is 1.5 m.

[0010] In a Bailey beam protection system according to the present invention, six groups of single-row Bailey beams are provided, eighteen suspension beams are provided, and two columns are provided at the bottom of each beam, thereby forming a standard Bailey beam pipeline protection system.

[0011] In a Bailey beam protection system according to the present invention, twelve groups of single-row Bailey beams are provided, eighteen suspension beams are provided, and three columns are provided at the bottom of each beam, thereby forming a reinforced Bailey beam pipeline protection system.

[0012] The utility model has at least the following beneficial effects:

[0013] This utility model adopts a pipeline protection system consisting of Bailey beam trusses, cross beams, suspension beams and suspension ropes, forming a safe and feasible technical solution and a complete set of process parameters and technical parameters. After on-site practice and ultimate successful implementation, the purpose of safe construction was achieved, providing replicable successful experience for subsequent similar project construction, and bringing huge economic and social benefits to projects and enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 This is a schematic structural diagram of the Bailey beam protection system of the utility model;

[0016] Figure 2 This is a schematic diagram of the right side structure of the Bailey beam protection system of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the reinforced Bailey truss of the present invention.

[0018] Description of Figure Numbers:

[0019] 1. Column; 2. Beam; 3. Bailey beam truss; 4. Suspension beam; 5. Second wire rope; 6. First wire rope; 7. Turnbuckle DETAILED DESCRIPTION

[0020] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] Example 1

[0022] Please refer to Figures 1 to 3As shown, this embodiment provides a Bailey beam protection system, including a Bailey beam truss 3, wherein the bottoms of both ends of the Bailey beam truss 3 are fixedly connected to cross beams 2, the bottoms of the cross beams 2 are fixedly connected to a plurality of columns 1, and the top of the Bailey beam truss 3 is fixedly connected to a plurality of suspension beams 4, and the suspension beams 4 are fixedly connected to suspension ropes for suspending underground pipelines.

[0023] In this embodiment, the suspension rope includes a first steel wire rope 6, which is arranged in a U shape. The tops of both ends of the first steel wire rope 6 are connected to the second steel wire rope 5 through basket bolts 7. The upper end of the second steel wire rope 5 is fixedly connected to the suspension beam 4. Through this arrangement, when suspending, the length of the suspension rope can be adjusted by adjusting the basket bolts 7 to ensure stability when suspending underground pipelines.

[0024] In order to ensure the suspension strength, the distance between two adjacent suspension beams 4 is 1.5m.

[0025] In this embodiment, the Bailey beam truss 3 is formed by splicing together a number of single-row Bailey beams, wherein a single-row Bailey beam is spliced ​​together by splicing together a number of Bailey plates.

[0026] In this embodiment, the cross beam 2 and the suspension beam 4 are both made of I-beams.

[0027] Example 2

[0028] In this embodiment, six groups of single-row Bailey beams are provided, eighteen suspension beams 4 are provided, and two columns 1 are provided at the bottom of each crossbeam 2, thereby forming a standard Bailey beam pipeline protection system.

[0029] Example 3

[0030] In this embodiment, twelve groups of single-row Bailey beams are provided, eighteen suspension beams 4 are provided, and three columns 1 are provided at the bottom of each crossbeam 2, thereby forming a reinforced Bailey beam pipeline protection system.

[0031] The Bailey beam protection system proposed in this utility model specifically includes the following construction steps:

[0032] S1. Construction Preparation

[0033] a. Before construction, determine the specific location of the protected pipeline, as well as the pipeline's structure, actual material, and specific dimensions through geophysical exploration; prepare a detailed construction plan based on the design drawings and the on-site exploration results;

[0034] b. Before construction, the technical person in charge organizes an internal review of the project construction drawings and completes the technical briefing of the project management personnel and the leaders of the main construction teams to ensure that the management personnel and on-site operators are familiar with the construction drawings, construction plans, construction process flow and construction requirements;

[0035] c. Before Bailey sheets, steel sections, rebars, steel pipe columns, wire ropes and other materials are brought to the site, a dedicated person shall conduct quality inspection on the apparent quality and dimensions. Only after passing the inspection can they be brought to the site. After the materials are brought to the site, mechanical properties tests shall be carried out in accordance with relevant specifications. Only after the materials meet the design requirements can they be used;

[0036] d. Personnel allocation and management: Based on the construction task plan for pipeline suspension protection, rationally allocate construction technicians, quality inspection personnel, and construction workers. At the same time, strengthen the construction technology education for management personnel and clarify their respective job responsibilities;

[0037] S2. Measurement and positioning

[0038] a. Review and measure the size and position of the engineering structures involved in the pipeline suspension protection construction according to the construction design drawings to ensure that the size and position of the end foundation, hanger and bracket of the suspension structure meet the design requirements;

[0039] b. Engineering surveying should follow the working procedure of "first overall and then details". First determine the "plane control network", and then use the plane control network as the basis to locate and lay out the detailed axes;

[0040] The measurement and positioning work must be carried out under the working system of self-inspection and mutual inspection and then report for inspection after passing the inspection;

[0041] S3. Steel pipe pile construction

[0042] a. The steel pipe piles are made of A630mm steel pipe with a wall thickness of 10mm and are constructed using the vibratory hammer insertion method;

[0043] b. Equipment selection and matching

[0044] The equipment was selected according to the design requirements. The following equipment was used in this project: DY-60 vibratory hammer with an exciting force of 60t; hydraulic clamps connected to the vibratory hammer with bolts; 50t crane; 630mm steel pipe with a wall thickness of 10mm; measuring instruments;

[0045] c. Pipe hanging in place:

[0046] A foundation pit is dug onshore in advance, and a casing with a diameter of 0.6m and a length of 2.5-3.0m is buried. The steel pipe is lifted with the crane's auxiliary hook (four ropes are tied to the lifting end of the 630mm steel pipe before lifting). The lower end of the steel pipe is inserted into the casing and straightened by pulling with the ropes. The auxiliary hook is detached from the steel pipe, and the main hook lifts the vibratory hammer. The needle-nosed jaws of the hydraulic needle-nosed pliers under the hammer are used to clamp the steel pipe wall. The crane, carrying the vibratory hammer, hydraulic pliers, and steel pipe, is moved to the pile position above the water and positioned in preparation for pile driving.

[0047] d. Driving piles:

[0048] After the steel pipe is in place, use plumb bobs to suspend the pipe in two mutually perpendicular directions to correct its verticality and start vibrating and hammering. If any deviation is found during the whole process of hammering, it should be corrected in time. The correction method is: during the vibration of the vibrating hammer, the main hook of the crane does not release the rope and swings or raises and lowers the rod in a small amplitude until it is aligned and then hammers are hammered until the upper surface of the pipe is sunk to the control elevation.

[0049] e. Pile connection:

[0050] Next, a 10m long pipe is hoisted for alignment and welding. The butt joint surface should be flat and smooth. Ensure that it is aligned vertically before welding. After welding along the circumferential gap, perform the auxiliary welding. Arrange three pieces of arc-shaped steel plates with a length, width and thickness of 15cm, 10cm and 0.80cm symmetrically and perform auxiliary welding. After auxiliary welding, insert and hammer again. Repeat the above procedure until a row of piles is completed.

[0051] S4. Steel pipe column construction

[0052] a. Steel column installation

[0053] The Bailey beam pipeline protection system has two rows of steel pipe columns, each row of steel pipe columns consists of two A609mm steel pipes with a wall thickness of 16mm.

[0054] The Bailey beam pipeline protection system has two rows of steel pipe columns, each row of which consists of three A609mm steel pipes with a wall thickness of 16mm;

[0055] The steel pipe column and the steel pipe pile are connected by flanges. During construction, attention should be paid to the welding between the connecting nuts and steel plates. Before welding, the verticality of the steel pipe column should be strictly checked and controlled. The most commonly used method is the plumb ball method. Instruments can also be used for on-site observation and installation guidance. Before and after the installation of the steel pipe column, the foundation surface and the length of each steel pipe column after splicing should be carefully checked to ensure that the top surface elevation of the control column is the same.

[0056] b. Horizontal double I-beam construction

[0057] A double-jointed I-beam is set as a crossbeam 2 on the top of each row of steel pipe columns. The two I-beams are welded along the joint. In order to facilitate dismantling in the future, interval welding is adopted for welding between the I-beams, and the end parts can be welded with external connecting steel plates. Before hanging the crossbeam, the elevation of the top of the steel pipe column and the top opening should be reviewed. If the top of the steel pipe column is open, a reinforcing steel plate should be set. During construction, the I-beam crossbeam is hung on the top of the steel pipe column by the two-point lifting method. When placing it, it is necessary to ensure that the center of the I-beam corresponds to the longitudinal and transverse center of the column. After the position is accurate, 25mm short steel bars are welded on both sides of the I-beam on the top surface of the column along the transverse direction to lock the I-beam to prevent the I-beam from shifting. The top of the column must be closely attached to the bottom surface of the I-beam. Steel plates can be used for support due to errors in the elevation of the top of the column;

[0058] S5. Bailey beam construction

[0059] a. Installation site conditions:

[0060] The abutment that meets the installation dimensions has been completed, with 15 installation workers and a 50-ton crane arriving on site.

[0061] The installation site should have unobstructed access, the material stacking site should be as close to the bearing platform as possible, and the assembly site should be flat and large enough to assemble and place two sets of main beams.

[0062] No construction during bad weather or at night;

[0063] b. Assembly of Bailey Beam:

[0064] b1. Use lifting equipment to lift the Bailey piece to the assembly site. After the lower chord of the Bailey piece is flat on the ground, the assembly worker will hold it steady. Then lift another Bailey piece and insert it into the corresponding male and female tenons. When the pin holes are aligned, drive the steel pin in. After the steel pin has completely penetrated the pin hole, insert the safety pin.

[0065] b2. Connect the Bailey beams into rows, with two or three rows as a group according to the construction design. Use 135 / 45 support frames to connect and fix the groups. After each group of Bailey beams is connected to the preset length, it can be prepared for lifting;

[0066] c. Bailey beam installation

[0067] c1. Bailey beam installation position layout and positioning

[0068] To ensure the accurate positioning of the Bailey beams, technicians first lay out the positions on the load-bearing beams. After each set of Bailey beams is in place, the distance between the groups must be checked to ensure it is accurate to prevent any discrepancies with the installation dimensions of the support frames between the groups.

[0069] C2. Lifting of Bailey Beam

[0070] Use hoisting equipment to lift the Bailey beam onto the load-bearing beam. After determining the horizontal and vertical layout positions, put it in place. To prevent the Bailey beam from lateral displacement, welding limiters must be installed in time. The next group of Bailey beams can only be hoisted after the connection construction between groups is completed.

[0071] S6. Installation of suspension beam 4 and wire rope

[0072] a. Installation of suspension beam 4

[0073] Use hoisting equipment to install the suspension beam 4 and fix it to the Bailey frame with U-bolts or direct welding. Each suspension beam 4 has no less than 4 fixing points.

[0074] b. Installation of wire rope

[0075] Use 20mm nominal diameter steel rope for power pipes and rainwater pipes. For other pipelines with lower loads, use 12mm nominal diameter steel rope. Then tighten with M22 turnbuckles to ensure load-bearing. Pay attention to controlling the force to avoid damaging sewage pipes and causing accidents. DN1000 concrete rainwater pipes are protected with steel discs and filled with sand.

[0076] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A Bailey beam protection system, characterized in that: The invention comprises a Bailey beam truss (3), wherein the bottoms of both ends of the Bailey beam truss (3) are fixedly connected to cross beams (2), the bottoms of the cross beams (2) are fixedly connected to a plurality of columns (1), the top of the Bailey beam truss (3) is fixedly connected to a plurality of suspension beams (4), and the suspension beams (4) are fixedly connected to suspension ropes for suspending underground pipelines.

2. The Bailey beam protection system according to claim 1, characterized in that: The suspension rope comprises a first steel wire rope (6), the first steel wire rope (6) is arranged in a U shape, the tops of both ends of the first steel wire rope (6) are connected to the second steel wire rope (5) through basket bolts (7), and the upper end of the second steel wire rope (5) is fixedly connected to the suspension beam (4).

3. The Bailey beam protection system according to claim 2, characterized in that: The Bailey beam truss (3) is formed by splicing together a number of single-row Bailey beams.

4. The Bailey beam protection system according to claim 3, characterized in that: The distance between two adjacent suspension beams (4) is 1.5m.

5. The Bailey beam protection system according to claim 4, characterized in that: Six groups of single-row Bailey beams are provided, eighteen suspension beams (4) are provided, and two upright columns (1) are provided at the bottom of each crossbeam (2), thereby forming a standard Bailey beam pipeline protection system.

6. The Bailey beam protection system according to claim 4, characterized in that: Twelve groups of single-row Bailey beams are provided, eighteen suspension beams (4) are provided, and three upright columns (1) are provided at the bottom of each crossbeam (2), thereby forming a reinforced Bailey beam pipeline protection system.

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