Construction method of arc-shaped sound barrier steel structure

Abstract

The invention provides a construction method for an arc-shaped sound barrier steel structure, and belongs to the field of sound barrier construction. The construction method comprises the following steps that S100, a steel frame is machined and manufactured; s200, the steel frame is installed on site; s300, column foot grouting is carried out; s400, on-site installation of a maintenance channel is carried out; and S500, construction is completed. The construction method aims at solving the problems of precision, efficiency, stability and the like of arc-shaped sound barrier steel structure construction in the prior art in the aspects of steel frame machining, field installation, column foot grouting and maintenance channel installation. The technical effects of avoiding the unstable structure, improving the efficiency, controlling the cost, enhancing the stability, eliminating hidden dangers, facilitating the maintenance, guaranteeing the safety and the like are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sound barrier construction, and particularly relates to a circular arc sound barrier steel structure construction method. BACKGROUND

[0002] In the modern transportation field, the continuous extension of highway, railway and other traffic trunks brings increasingly serious traffic noise pollution. As an effective facility for reducing traffic noise, the construction quality and efficiency of the steel structure of the sound barrier directly affect the noise reduction effect and service life of the sound barrier. At present, there are many problems in the construction of the circular arc sound barrier steel structure. In the steel frame processing and manufacturing link, the traditional process has low processing precision, which leads to large size deviation of the steel frame components, affecting the accuracy and stability of subsequent installation. During the on-site installation of the steel frame, due to the lack of a scientific and reasonable installation process, low installation efficiency often occurs, and the components are easily damaged, increasing the construction cost. In terms of column foot grouting, the existing technology cannot guarantee the compactness of grouting, so that the stability of the steel frame column foot is insufficient, and there is a safety hazard. In addition, there is also a lack of systematic and standardized method for the installation of the maintenance access, which leads to the fact that the connection between the maintenance access and the overall structure of the sound barrier is not firm enough, affecting the safety and convenience of the later maintenance and maintenance.

[0003] In summary, the current construction of the circular arc sound barrier steel structure has problems of precision, efficiency, stability and the like in the aspects of steel frame processing, on-site installation, column foot grouting and maintenance access installation. SUMMARY

[0004] The present application provides a circular arc sound barrier steel structure construction method, which solves the defects of the existing technology in the aspects of steel frame processing, on-site installation, column foot grouting and maintenance access installation, and achieves the effects of avoiding unstable structure, improving efficiency and reducing cost, enhancing stability and eliminating hazards, facilitating maintenance, and ensuring safety.

[0005] The present application provides a circular arc sound barrier steel structure construction method, which includes the following steps: Step S100: steel frame processing and manufacturing; Step S200: on-site installation of the steel frame; Step S300: column foot grouting; Step S400: on-site installation of the maintenance access; Step S500: completion of the construction.

[0006] In addition, the circular arc sound barrier steel structure construction method according to the present application can also have the following additional technical features: In some embodiments of the present application, in step S100, the steel frame processing and manufacturing includes the following steps: Step S110: steel structure manufacturing; Step S120: Assemble and weld the steel structure to form a steel frame; Step S130: Steel frame assembly construction, steel frame processing and fabrication completed.

[0007] In some embodiments of the present invention, step S130, the steel frame assembly construction includes the following steps: Step S131: Erect the frame; Step S132: Install and fix the steel frame segments; Step S133: Weld and inspect the weld; Step S134: Anti-corrosion coating.

[0008] In some embodiments of the present invention, step S200, the on-site installation of the steel frame includes the following steps: Step S210: Preparations before construction; Step S220: Pre-embedded foundation treatment; Step S230: Install the leveling nut; Step S240: Steel frame hoisting; Step S250: Steel frame inspection and calibration.

[0009] In some embodiments of the present invention, step S240, the steel frame hoisting includes the following steps: Step S241: Hoisting and binding the first steel frame; Step S242: The first steel frame is positioned and temporarily secured; Step S242: The second steel frame is hoisted, tied, and temporarily secured; Step S243: Install supports and tie rods between the first steel frame and the second steel frame; Step S244: Repeat steps S242 and S243 to hoist the subsequent steel frames, supports and tie rods until all steel frames are hoisted.

[0010] In some embodiments of the present invention, step S250, the steel frame inspection and calibration includes the following steps: Step S251: After the steel frame is hoisted, check the verticality of the steel frame; Step S252: Steel frame alignment; Step S253: Correct the steel frame ridge until the ridge lines of each steel frame are collinear.

[0011] In some embodiments of the present invention, step S120, in which the steel structure is assembled and welded to form a steel frame, includes the following steps: Step S121: Steel structure panel assembly; Step S122: H-beam fabrication; Step S123: Painting.

[0012] In some embodiments of the application, in step S121, the steel structure plate splicing includes: Step S1211: steel plate inspection and reinspection; Step S1212: steel plate flattening; Step S1213: numerical control cutting and blanking, Step S1214: plate splicing; Step S1215: steel structure plate splicing is completed.

[0013] In some embodiments of the application, in step S122, the H-shaped steel manufacturing includes: Step S1221: secondary flattening of the steel structure plate splicing; Step S1222: web groove processing; Step S1223: H-shaped steel assembly, welding and correction; Step S1224: corbel and rib plate welding; Step S1225: size inspection.

[0014] In some embodiments of the application, in step 300, the column foot grouting includes the following steps: Step S310: base cleaning; Step S320: grouting contact surface wetting; Step S330: setting up a formwork; Step S340: grouting material mixing and grouting; Step S350: maintenance, formwork removal and cleaning; Step S360: column foot grouting is completed.

[0015] In summary, the present application has the following beneficial technical effects: through steel frame processing and manufacturing, a foundation is laid for subsequent installation, avoiding structural instability problems caused by size deviation; through on-site installation of the steel frame, installation efficiency is greatly improved, component loss is reduced, and construction cost is effectively controlled; through column foot grouting, the stability of the steel frame column foot can be ensured, the overall wind and earthquake resistance of the sound barrier is improved, and safety hazards are eliminated; through on-site installation of the maintenance access, the maintenance access and the sound barrier structure are firmly connected, facilitating later maintenance and repair, and ensuring personnel safety. In summary, the construction method achieves the effects of avoiding structural instability, improving efficiency and controlling cost, enhancing stability and eliminating hazards, and facilitating maintenance and ensuring safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to limit the present application thereto, as the present application can have application in forms other than those illustrated. Further, like reference numerals have been used throughout the drawings to designate identical elements. In the drawings: Figure 1 A structural schematic diagram of a sound barrier steel structure according to the construction method of the circular arc sound barrier steel structure of some embodiments of the present application is schematically shown.

[0017] Figure 2 A construction flow chart of the construction method of the circular arc sound barrier steel structure of some embodiments of the present application is schematically shown.

[0018] Figure 3 A construction flow chart of the construction method of the circular arc sound barrier steel structure of some embodiments of the present application is schematically shown.

[0019] Figure 4 A construction flow chart of the construction method of the circular arc sound barrier steel structure of some embodiments of the present application is schematically shown.

[0020] Figure 5 A construction flow chart of the construction method of the circular arc sound barrier steel structure of some embodiments of the present application is schematically shown.

[0021] Figure 6 A construction flow chart of the construction method of the circular arc sound barrier steel structure of some embodiments of the present application is schematically shown.

[0022] Reference Signs: 1, steel frame, 2, tie rod, 3, support, 4, embedded foundation, 5, maintenance access. DETAILED DESCRIPTION

[0023] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings; however, they are not intended to limit the present disclosure to specific embodiments. The drawings and descriptions are to be understood to carry out the concept of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0024] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0025] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0026] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may also be rotated 90 degrees or in other orientations, and the spatial relative descriptors used in the text will be interpreted accordingly.

[0027] like Figure 1 As shown, the arc-shaped sound barrier steel structure includes a steel frame 1, tie rods 2, supports 3, embedded foundations 4, and maintenance access 5, etc. The steel frame 1 is made of steel plates to form H-beams, and the H-beams are spliced ​​together with brackets and stiffening plates to form the arc-shaped steel frame 1.

[0028] like Figures 2 to 6As shown, according to the embodiment of the first aspect of the application, a construction method of the circular arc sound barrier steel structure is provided, comprising the following steps: Step S100: steel frame 1 is processed and manufactured; Step S200: the steel frame 1 is installed on site; Step S300: column foot grouting; Step S400: the maintenance access 5 is installed on site; Step S500: construction is completed.

[0029] In the above embodiment, it should be noted that in step S400, the method for installing the maintenance access 5 on site comprises the following steps: Erecting the jig frame, in order to ensure the splicing accuracy of the maintenance access 5, a horizontal jig frame should be set on the splicing platform of the maintenance access 5 according to the shape of the maintenance access 5 before splicing. After the jig frame is completed, the dimensions are rechecked to ensure that the jig frame is kept consistent. The jig frame should meet the strength and rigidity requirements. The upright columns, longitudinal beams and cross beams of the jig frame are made of H-shaped steel, and the jig frame is fixed to the hardened ground by expansion bolts. The top of the jig frame upright column is super-flat with a level gauge to ensure that the flatness of the steel plate surface meets the splicing accuracy requirements; Segmenting the jig, the two parts of the maintenance access 5 are hoisted onto the jig frame by a car hoist, the access platform is hoisted first, and then the two side rails are hoisted; Assembling, the platform and the rail of the maintenance access 5 are assembled and fixed; Welding, after the platform and the rail are fixed, fixed welding is performed, the same welding material as the formal welding is used during the fixed welding, and then welding is performed. Single-sided fillet welding is used, and the weld thickness is 6mm. After welding is completed, the welding slag is cleaned, and the weld is checked for defects before painting.

[0030] Welding deformation correction, for the positions of the maintenance access 5 where local deformation occurs, the flame correction method is used for deformation correction. Before correction, the deformation situation is carefully analyzed, the correction work plan is developed, the heating position and the correction sequence are determined, and the heating temperature is 600-800℃.

[0031] Anti-corrosion coating: after the weld is detected to be qualified, coating is performed according to the coating requirements.

[0032] Hoisting and binding of the maintenance access 5, the maintenance access 5 is hoisted and bound by two-point binding method, the included angle between the two steel wires is not greater than 90°, and the contact position between the steel wire and the maintenance access 5 is treated by angle wrapping.

[0033] Positioning and temporary fixing of the maintenance access 5, the car hoist hoists the maintenance access 5 above the steel frame 1 and slowly lowers it. When the bottom plate of the maintenance access 5 is about 30-50mm away from the top surface of the connecting plate of the steel frame 1, the maintenance access 5 is aligned with the steel frame 1. After alignment, the maintenance access 5 falls onto the connecting plate of the steel frame 1, and the maintenance access 5 is connected with the steel frame 1 by bolts. After the bolts are tightened and fixed, the steel wire is unhooked.

[0034] The technical effects achieved by the above embodiment are: the steel frame 1 is processed through step S100, laying a foundation for subsequent installation and avoiding structural instability caused by dimensional deviation; the steel frame 1 is installed on site through step S200, greatly improving installation efficiency, reducing component loss, and effectively controlling construction cost; the column foot grouting through step S300 can ensure the stability of the steel frame 1 column foot, improve the overall wind and earthquake resistance of the sound barrier, and eliminate safety hazards; the maintenance access 5 is installed on site through step S400, realizing firm connection of the maintenance access 5 and the sound barrier structure, facilitating later maintenance and repair, and ensuring personnel safety. In summary, the construction method achieves the effects of avoiding structural instability, improving efficiency and controlling cost, enhancing stability and eliminating hidden dangers, facilitating maintenance and ensuring safety.

[0035] Optionally, as shown in Figure 3 In step S100, the steel frame 1 processing and manufacturing includes the following steps: Step S110: steel structure manufacturing; Step S120: steel structure assembly and welding to form the steel frame 1; Step S130: steel frame 1 assembly construction, and the steel frame 1 processing and manufacturing is completed.

[0036] In the above optional embodiment, it should be noted that in step S110, the steel structure is designed in depth before manufacturing: the data of three-dimensional coordinate measurement of the center point of the foundation embedded bolt group of the sound barrier steel frame 1 embedded foundation 4 collected on site is analyzed carefully using EXCEL data analysis tool, and the embedded errors are merged; the sound barrier steel frame 1 foundation embedded bolt distribution and strike layout is drawn using CAD drawing tool, three-dimensional modeling is performed using three-dimensional steel structure detail drawing design software TeklaStructures, and the longitudinal coaxiality of the circular arc steel frame 1 is pre-controlled.

[0037] In step S110, the steel structure manufacturing includes the following steps: Step S111: production preparation; Work personnel are equipped, the arrangement of each technical worker, the arrangement of work shifts, the temporary allocation of each team and field workers, etc. are all arranged according to the requirements of the production operation plan; Raw materials are prepared to meet and ensure the needs of the production site in terms of specifications, varieties, quantities, quality, delivery period, etc.

[0038] Mechanical equipment preparation, equipment type, quantity and normal operation is an important guarantee to complete the production plan. In the development of the plan, the need for equipment maintenance, maintenance, inspection, repair, etc. should be considered, the equipment pre-repair system should be implemented, and the easily damaged spare parts should be prepared to ensure that the equipment is in good running condition. Power and transportation, power supply and transportation of materials are the basic conditions for normal production. Fuel should be prepared for power supply, and power transmission and transformation equipment should be maintained to keep it in normal operation. The preparation of material transportation needs to maintain and maintain the transportation vehicles, equipment and facilities, and reasonably arrange the transportation route.

[0039] Site preparation, according to the sequence of each process, arrange the production site to avoid backflow, and try to reduce the workshop transportation workload. When arranging the site, a certain distance should be considered to facilitate operation and part stacking, and to ensure that the finished products can be smoothly transported out.

[0040] Step S112: cutting If the length of the steel plate is insufficient, splice it before cutting: Check the flatness of the steel plate before cutting. According to the splicing drawing, mark the steel plate, hoist the wing plate or web plate to be spliced on the horizontal jig, straighten the center line at both ends to splice the plate, and clamp the two edges before welding to prevent lateral bending during welding.

[0041] Welding adopts double-sided automatic submerged arc welding, and after welding, the arc plate and arc extinguishing plate are removed for fire correction, and at the same time, the straightness of the two edges of the plate is measured again. If the error exceeds the design error, it will be corrected, and after correction, 100% ultrasonic flaw detection is carried out on the weld.

[0042] After the flaw detection is qualified, the steel plate is cut.

[0043] Cut the steel plate, the length direction allowance is 30-50mm, and the width direction of the web plate is 2-4mm welding shrinkage allowance.

[0044] Use a semi-automatic cutting machine to process the web plate groove. The groove form should strictly follow the requirements of technical documents such as process specification book and design drawing. The groove is generally opened in two times. The first time is to open the groove for half penetration. The second time is to process the groove for full penetration. The range of two times processing should be determined by sectioning with the seal plate end as the reference. The second time processing should pay attention to ensure the gap at the bottom of the penetration weld groove.

[0045] For plates thicker than 40mm, before welding, ultrasonic flaw detection is carried out in the area of 2 times plate thickness plus 30mm on both sides of the center line of the base metal. There should be no cracks, inclusions and delamination in the base metal.

[0046] The beneficial effects of the above-mentioned optional embodiment are: the steel structure manufacturing in step S110 provides a high-quality basic unit for subsequent assembly, reducing structural hidden dangers caused by component errors from the source; the steel structure assembly welding in step S120 forms a stable steel frame 1 frame, improving the overall structural carrying capacity; the steel frame 1 assembly construction in step S130 further optimizes the overall stability and integrity of the steel frame 1, reducing the adjustment and correction work on site.

[0047] Optionally, as shown in Figure 5 In step S130, the steel frame 1 assembly construction includes the following steps, Step S131: erecting a jig frame; Step S132: steel frame 1 segment installation and fixation; Step S133: welding and detecting welds; Step S134: corrosion protection coating.

[0048] In the above-mentioned optional embodiment, it should be noted that in step S131, the method of erecting a jig frame includes: According to the shape of the circular arc steel frame 1, a profiled jig frame is made on the assembly platform. After the jig frame is completed, the dimensions are checked to ensure that the curvature of the jig frame is consistent with the steel frame 1.

[0049] The jig frame columns, longitudinal beams, and transverse beams are made of H-shaped steel and are fixed to the hardened ground using expansion bolts.

[0050] The top of the column is super-flat with a level, and a steel plate with a thickness of 12 mm or more is placed on the assembly platform to ensure that the surface flatness of the steel plate meets the assembly accuracy requirements; the column, longitudinal beam, transverse beam, and steel plate are all connected by welding to ensure that the jig frame remains structurally stable during assembly.

[0051] After the jig is erected, use a total station to lay out on the platform to determine the position of the stop block and the steel frame 1.

[0052] In step S132, the steel frame 1 segment installation and fixation includes: Segment jacking: use a car hoist to lift the three segments of the circular arc steel frame 1 onto the jig frame, first lifting the middle segment, then lifting the two side segments.

[0053] Segment assembly and fixation: the segments of the circular arc steel frame 1 must not be forced into place during assembly. The overall linear dimension of the segments is strictly controlled, and there is no error phenomenon on both sides of the segment butt weld. After inspection, the segments are fixed using a stop block that meets the strength requirements.

[0054] In step S133, welding and detecting welds include: Welding, segment fixed after the fixed welding, fixed welding at the same time with the formal welding of the same welding material, then according to the sequence of first web after flange plate welding. Segment butt welding seam grade is first, on-site welding with equal strength butt fusion welding; Welding, each layer of weld thickness should not be greater than 6mm. Each layer of weld welding, all must be cleaned of welding slag, polishing weld, check the weld without defects before the next welding of welding.

[0055] Welding deformation: the weld on both sides of the web and flange with reliable fixed constraint measures; Welding, control the welding machine current parameters, reduce heat input; Welding process, using symmetric multi-layer welding, symmetric welding, reduce deformation.

[0056] Welding deformation correction: local deformation of the component, take the flame correction method for deformation correction, before the correction carefully analyze the deformation, develop the correction work plan, determine the heating position and correction sequence, heating temperature 600~800℃.

[0057] Weld detection: after welding, the slag and welding spatter clean, and by qualified nondestructive testing personnel on the weld ultrasonic testing, detection after the welding defects, if there is a standard, then use carbon arc air gouging or angle grinder to completely remove the defects after the repair welding.

[0058] Anti-corrosion coating: welds after testing qualified according to the coating requirements for coating.

[0059] Coating requirements include: Rust, the surface of steel frame 1 must be rust treatment, rust removal by sand blasting. At the same time, steel frame 1 in the shot blasting, there are some quality assurance measures: Before rust removal, the edge of steel frame 1 should be processed, remove burrs, welding slag, welding spatter and dirt, etc.

[0060] After rust removal, the surface of steel frame 1, using a brush and other tools to clean, or use clean compressed air to blow off the dust and residual abrasive, and then the next process.

[0061] After rust removal, the surface quality of steel frame 1 should be marked for re-spray or grinding to the requirements.

[0062] When the rust removal operation is completed and passed the inspection, start the vacuum sand suction machine, and carry out surface cleaning work, that is, suction, dust removal, and completely remove the dust and impurities on the surface of the steel.

[0063] After the steel frame 1 rust removal is accepted, the first coat of primer is applied.

[0064] After the surface of the steel frame 1 is rusted, if the surface is rusted before the primer is applied, the surface needs to be rusted again, if the rust is not serious, only light shot blasting treatment can be performed, and the primer can be applied after cleaning.

[0065] After the primer is completely dry, the intermediate paint can be applied, and the spray thickness is checked.

[0066] Then the topcoat is applied.

[0067] The beneficial effects of the above optional embodiment are that in step S131, the setting of the jig frame provides a precise assembly reference for the steel frame 1 segment, effectively avoiding shape deviation of the steel frame 1 caused by jig frame error, and improving the accuracy of the arc-shaped steel frame 1 assembly. In step S132, the segment hoisting sequence and the group fixing method avoid forced positioning, strictly control the linear size and the misalignment problem, cooperate with the high-strength block fixing, ensure the position accuracy of the steel frame 1 segment, and create good conditions for subsequent welding.

[0068] In step S133, the welding process effectively guarantees the weld quality and the overall shape of the steel frame 1 by using multi-layer welding, the sequence of first web plate and then flange plate, combined with symmetric welding, current control and other anti-deformation measures, and flame correction method to handle deformation; the first-level weld standard and professional non-destructive testing ensure that the weld strength meets the requirements of equal strength butt fusion penetration, eliminate welding defect risks, and enhance the load-bearing capacity of the steel frame 1 structure. In step S134, after the weld is detected to be qualified, corrosion protection is performed in time to isolate the steel frame 1 from the external corrosive medium, effectively prolonging the service life of the steel frame 1.

[0069] In summary, in step S130, the specific construction steps of the steel frame 1 assembly construction not only improve the precision and efficiency of the steel frame 1 assembly construction, but also significantly improve the stability, strength and durability of the steel frame 1 structure, providing a strong guarantee for the overall quality and long-term reliable operation of the sound barrier steel structure.

[0070] Optionally, as shown in Figure 4 In step S200, the steel frame 1 field installation includes the following steps: Step S210: preparation before construction; Step S220: pre-buried foundation 4 treatment; Step S230: leveling nut installation; Step S240: steel frame 1 hoisting; Step S250: steel frame 1 inspection and correction.

[0071] In the optional embodiment described above, it should be noted that in step S220, the method for processing the embedded foundation 4 is to manually clean the column foot bolts before hoisting the steel frame 1, remove oil stains and concrete residues and other contaminants, and correct the bent bolts to ensure smooth insertion of the bolt holes and easy tightening of the column foot nuts.

[0072] In step S230, the method for installing the leveling nuts is to install the leveling nuts after the embedded foundation 4 is processed. During installation, the leveling nuts are positioned and inspected with the help of tools such as levels and levels to ensure that the installation accuracy of the leveling nuts meets the subsequent hoisting requirements of the steel frame 1. The allowable deviation of the H-shaped steel column elevation is ±5 mm, and the deviation of adjacent columns is 5 mm.

[0073] The beneficial effects of the above optional embodiment are that in step S220, the embedded foundation 4 is processed, the column foot bolts are manually cleaned of oil stains, concrete residues and other contaminants, and the bent bolts are corrected, effectively eliminating installation obstacles caused by contamination and deformation of the embedded foundation 4, ensuring smooth insertion of the bolt holes and proper tightening of the column foot nuts, and laying a solid foundation for stable installation of the steel frame 1. In step S230, the leveling nuts are accurately installed with the help of professional tools such as levels and levels, the elevation of the H-shaped steel column and the deviation of adjacent columns are strictly controlled, the installation accuracy of the leveling nuts is ensured, and the elevation and perpendicularity of the steel frame 1 installation are effectively guaranteed. Precise installation of the leveling nuts not only improves the accuracy of subsequent steel frame 1 hoisting, but also reduces the adjustment time during installation, significantly improving construction efficiency.

[0074] Step S240 of steel frame 1 hoisting and step S250 of inspection and correction cooperate with each other, based on the good foundation of the previous embedded foundation 4 processing and leveling nut installation, the steel frame 1 hoisting can be quickly and accurately completed, and the installation deviation can be found and corrected in time through inspection and correction, further ensuring the installation quality of the steel frame 1.

[0075] In summary, the on-site installation of the steel frame 1 effectively improves the precision and efficiency of the on-site installation of the steel frame 1, ensures that the steel frame 1 structure is installed stably, the elevation and perpendicularity meet the standards, and enhances the stability and reliability of the entire sound barrier steel structure, providing strong support for the smooth development of subsequent construction procedures and the long-term stable operation of the sound barrier.

[0076] Optionally, as shown in Figure 2 In step S240, the steel frame 1 hoisting includes the following steps: Step S241: Hoist and bind the first steel frame 1; Step S242: Position and temporarily fix the first steel frame 1; Step S242: Hoist and bind the second steel frame 1 and temporarily fix it; Step S243: installing the support 3 and the tie bar 2 between the first steel frame 1 and the second steel frame 1; Step S244: repeating the step S242 and the step S243, hoisting the subsequent steel frame 1, the support 3 and the tie bar 2 until all the steel frames 1, the supports 3 and the tie bars 2 are hoisted completely.

[0077] In the above optional embodiment, it is to be noted that in the step S241, the hoisting and binding method of the first steel frame 1 is that the hoisting adopts a two-point binding method, the hoisting point position is determined according to the calculation, and the stability of the steel frame 1 in the hoisting process is ensured without deformation. The included angle of the two steel wires is not greater than 90°, and the contact position of the steel wire with the steel frame 1 is treated by angle wrapping.

[0078] In the step S242, the first steel frame 1 is positioned and temporarily fixed, including that the automobile crane hoists the steel frame 1 to the top of the embedded foundation 4 and slowly lowers it, when the column bottom plate is about 30-50 mm away from the top surface of the embedded bolt, the alignment is performed. After alignment, the hook of the crane is dropped, the embedded bolt passes through the column bottom plate steel frame 1 and falls onto the leveling nut, the column foot nut is installed, the column foot nut is initially screwed and the embedded bolt pre-tightening force is applied after the column foot grouting is performed for 24 hours. Due to the lack of lateral stability of the single steel frame 1, the first steel frame 1 needs to be pulled on both sides to form two cable wind ropes, and the cable wind ropes can be unhooked after being fixed.

[0079] The second steel frame 1 is installed by the same hoisting method, the column foot nut is initially screwed, and the support 3 and the tie bar 2 between the first steel frame 1 are installed, and the first steel frame 1 forms a stable system after which the hook can be unhooked.

[0080] In the step S243, the installation method of the support 3 and the tie bar 2 includes: The installation sequence of the support 3 and the tie bar 2 advances with the installation sequence of the circular arc-shaped steel frame 1. The installation of the support 3 and the tie bar 2 adopts a curved arm vehicle installation operation, the tie bar 2 is installed on the steel frame 1 by the curved arm vehicle, and the support 3 is welded on the steel frame 1. The mobility and safety and stability of the curved arm vehicle are suitable for the screwing operation of the tie bar 2 bolt. Its unique balance system can effectively reduce the vibration and shaking in the installation operation, thereby ensuring the accuracy and stability of the installation of the tie bar 2. The curved arm vehicle is equipped with advanced safety protection devices, such as anti-overturning system, emergency braking system, etc. These safety devices can be quickly started in emergency situations, effectively protecting the life safety of the operating personnel.

[0081] The tie bar 2 and the circular arc-shaped steel frame 1 are connected by high-strength bolts, the perpendicularity of the steel frame 1 is checked again after the bolt is inserted, and the steel frame 1 structure is ensured to be stable after timely tightening. The support 3 adopts welded connection, and is positioned and temporarily fixed by means of the installation bolt hole during installation, and is welded in time after being fixed to ensure the stability of the support system and the anticorrosion coating requirement.

[0082] In step S244, after the steel frame 1 forms a system, subsequent steel frames 1 are installed sequentially using the same method.

[0083] The advantages of the above-mentioned optional embodiments are as follows: by accurately binding, positioning, and temporarily fixing the first steel frame 1, a reliable benchmark is established for subsequent hoisting, avoiding the impact of installation deviations of the first steel frame 1 on the overall structure. The step-by-step hoisting strategy combined with temporary fixing measures can promptly stabilize the hoisted steel frame 1, preventing the risk of overturning due to the lack of a stable structure, and ensuring construction safety. Supports 3 and tie rods 2 are installed between adjacent steel frames 1 to quickly connect the independent steel frames 1 into a stable frame, enhancing the overall structural integrity and resistance to lateral displacement, and reducing disturbance to the installed steel frames 1 during subsequent hoisting. Steps S242 and S243 are repeated to standardize the installation process of the steel frames 1, ensuring the installation accuracy of each steel frame 1 and significantly improving overall hoisting efficiency. This hoisting method avoids positioning difficulties and structural instability problems that may arise from large-scale simultaneous hoisting, effectively controlling the accumulation of installation errors and ensuring that all steel frames 1 form a stable and high-precision steel structure system after installation, providing a solid load-bearing framework for the sound barrier and improving the overall stability and reliability of the sound barrier steel structure.

[0084] Optional, such as Figure 2 As shown, in step S250, the inspection and correction of steel frame 1 includes the following steps: Step S251: After the steel frame 1 is hoisted, check the verticality of the steel frame 1; Step S252: Steel frame 1 alignment; Step S253: Correct the ridge of steel frame 1 to make the ridge lines of each steel frame 1 collinear.

[0085] In the above optional embodiments, it should be noted that in step S252, the method for correcting the steel frame 1 includes checking with a hanging line and using a hoist to pull the steel wire rope cable for assistance in correction. The cable can only be released after the steel frame 1 is completely corrected and all substructures are installed. In step S253, after correcting the ridge line of the steel frame 1, the deviation between the steel frame 1 and the center line of the pre-embedded foundation 4 at both ends is equal, so that all steel frames 1 are on the same center line.

[0086] The advantages of the above optional embodiments are as follows: by checking the verticality of the steel frame 1 after hoisting, the tilting problem caused by the installation of the steel frame 1 can be detected in time, providing an accurate basis for subsequent correction, and avoiding uneven stress on the steel frame 1 due to verticality deviation, which would affect the structural bearing capacity. By calibrating steel frame 1 and making precise adjustments to the deviations found, steel frame 1 is ensured to be in the correct installation position, effectively improving the installation accuracy of steel frame 1 and ensuring that it is highly consistent with the design requirements.

[0087] By correcting the ridge of the steel frame 1 to the ridge line of each steel frame 1 to be collinear, not only the overall beauty of the sound barrier steel structure is enhanced, but more importantly, the stress distribution of the structure is optimized, so that each steel frame 1 cooperates with the stress, improves the overall stability and wind resistance of the structure.

[0088] Optionally, as shown in Figure 2 and Figure 3 , in step S120, the steel structure assembly welding is formed to form the steel frame 1, which includes the following steps: Step S121: steel structure plate assembly; Step S122: H-shaped steel production; Step S123: painting.

[0089] The beneficial effects of the above-mentioned optional embodiments are: through the steel structure plate assembly, the strength of the steel plate can be ensured, and through the painting, the corrosion can be effectively prevented.

[0090] Optionally, as shown in Figure 2 and Figure 3 , in step S121, the steel structure plate assembly includes: Step S1211: steel plate inspection and reinspection; Step S1212: steel plate flattening; Step S1213: numerical control cutting and blanking, Step S1214: plate assembly and lengthening; Step S1215: steel structure plate assembly is completed.

[0091] In the above-mentioned optional embodiments, it should be noted that after the plate assembly and lengthening, the butt joint misalignment is checked at the same time, and the weld appearance and UT inspection are performed; UT inspection is ultrasonic detection, which is a non-destructive testing method in industry. By analyzing the reflected wave of ultrasonic wave in the object, the position and size of the defect can be accurately measured, and the material thickness can be measured.

[0092] The beneficial effects of the above-mentioned optional embodiments are: through the steel plate inspection and reinspection, the quality is controlled from the source, and the unqualified plate is removed; through the flattening treatment, the initial deformation of the steel plate is eliminated; through the numerical control cutting and blanking, the size accuracy is ensured; through the plate assembly and lengthening, the material utilization is optimized and the connection strength is ensured. Further, the steel plate processing precision and component quality are improved, the steel structure plate assembly meets the design requirements, the foundation for subsequent H-shaped steel production and steel frame 1 forming is laid, and the stability and reliability of the sound barrier steel structure are enhanced.

[0093] Optionally, as shown in Figure 2 and Figure 3 , in step S122, the H-shaped steel production includes: Step S1221: secondary flattening of steel structure plate assembly; Step S1222: web groove processing; Step S1223: H-shaped steel assembly, welding and correction; Step S1224: corbel and web plate welding; Step S1225: size inspection.

[0094] In the above optional embodiment, it should be noted that in step S1222: after the web groove is processed, the groove size is checked; in step S1223: after the H-shaped steel is assembled, the assembly size is checked; after the H-shaped steel is welded, the weld appearance and UT inspection are performed; after the H-shaped steel is corrected, the length processing and positioning marking are performed, and then the positioning size inspection and deformation and deflection inspection are performed; then the steel hole is made and the hole accuracy is checked, then the size inspection is performed and the inspection record is kept, then the H-shaped steel is marked according to the coating requirements, and then transported to the site for installation.

[0095] The beneficial effects of the above optional embodiment are: the secondary flattening further eliminates the residual deformation of the spliced plate, providing a flat basis for subsequent processing; the web groove processing ensures sufficient fusion during welding, enhancing the weld strength; the assembly, welding and correction precisely control the shape and size of the H-shaped steel; the corbel and web plate welding enhances the load bearing capacity of the structure connection part; the size inspection strictly controls the finished product accuracy; and finally effectively guarantees the processing quality of the H-shaped steel, improves the component strength and stability, and provides reliable support for the overall performance of the sound barrier steel frame 1.

[0096] Optionally, as shown in Figure 6 The column foot grouting in step 300 includes the following steps: Step S310: base cleaning; Step S320: grouting contact surface wetting; Step S330: setting formwork; Step S340: grouting material mixing and grouting; Step S350: curing, formwork removal and cleaning; Step S360: column foot grouting is completed.

[0097] In the above optional embodiment, it should be noted that, In step S310: the method of base cleaning is to clean the base impurities, remove the surface oil stains with cotton yarn, and remove the surface pulp, loose materials and dust with an air compressor and pressure water.

[0098] In step S320: the method of grouting contact surface wetting is to wet the grouting part within 24 hours before grouting, and dry the accumulated water 1 hour before grouting.

[0099] In step S330: the formwork adopts steel formwork or wooden formwork. In step S340, the method for mixing and grouting the grouting material includes: In the field, the mechanical stirring gravity mortar is used, such as a handheld electric mixer, the stirring speed is not less than 700 r / min, the mortar is added first, then the mixing water is added, and the stirring time is not less than 2 min; The mixed grouting material is placed for 1-2 min, and the grouting is performed after the bubbles in the grouting material disappear basically, the funnel is used for grouting when the grouting hole is grouted, the height of the funnel is not less than 400 mm, and the temperature of the mortar is controlled to be 5-30℃. In winter construction, hot water is used for mixing, the mixing water temperature is not higher than 60℃, and the temperature of the grouting body into the mold is not less than 5℃.

[0100] In step S350, curing and form removal and cleaning include that after the grouting is completed, the curing time is not less than 7 days, and surface cracks caused by rapid surface water loss are avoided. Under the condition of negative temperature, water curing is not used; when the form is removed, the temperature difference between the core of the mortar and the environment is not greater than 15℃, the form is removed after the strength of the mortar reaches the requirement, and the sundries are cleaned.

[0101] The beneficial effects of the above optional embodiments are that the sundries and oil stains are removed through the base cleaning, the grouting combination is avoided, the adhesion between the grouting material and the base is enhanced through the wet contact surface, the grouting range and shape are regulated through the form, the compactness is ensured through the accurate mixing and grouting of the grouting material, and the grouting strength meets the requirement and the surface is smooth through the curing and form removal, so that the compactness, the adhesion strength and the appearance quality of the column foot grouting are effectively ensured, the stability of the steel frame 1 column foot is enhanced, the overall wind resistance and the anti-seismic performance of the sound barrier are improved, the safety hidden danger is eliminated, and the service life is prolonged.

[0102] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any change or replacement that can be easily thought of by those skilled in the art within the technical range disclosed by the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A construction method for a circular arc-shaped sound barrier steel structure, characterized in that, Includes the following steps: Step S100: Steel frame (1) processing and fabrication; Step S200: Steel frame (1) on-site installation; Step S300: Column base grouting; Step S400: On-site installation of the maintenance access (5); Step S500: Construction completed.

2. The construction method for the arc-shaped sound barrier steel structure according to claim 1, characterized in that, In step S100, the processing and fabrication of the steel frame (1) includes the following steps: Step S110: Steel structure fabrication; Step S120: Steel structure assembly and welding to form a steel frame (1); Step S130: Steel frame (1) assembly construction, steel frame (1) processing and manufacturing completed.

3. The construction method for the arc-shaped sound barrier steel structure according to claim 2, characterized in that, In step S130, the assembly and construction of the steel frame (1) includes the following steps: Step S131: Erect the frame; Step S132: Steel frame (1) segment installation and fixing; Step S133: Weld and inspect the weld; Step S134: Anti-corrosion coating.

4. The construction method for the arc-shaped sound barrier steel structure according to claim 1, characterized in that, In step S200, the on-site installation of the steel frame (1) includes the following steps: Step S210: Preparations before construction; Step S220: Pre-embedded foundation (4) treatment; Step S230: Install the leveling nut; Step S240: Steel frame (1) hoisting; Step S250: Steel frame (1) Inspection and correction.

5. The construction method for the arc-shaped sound barrier steel structure according to claim 4, characterized in that, In step S240, the hoisting of the steel frame (1) includes the following steps: Step S241: Hoisting and binding of the first steel frame (1); Step S242: The first steel frame (1) is positioned and temporarily fixed; Step S242: The second steel frame (1) is hoisted, tied, and temporarily fixed; Step S243: Install the support (3) and tie rod (2) between the first steel frame (1) and the second steel frame (1); Step S244: Repeat steps S242 and S243 to hoist the subsequent steel frame (1), support (3) and tie rod (2) until all steel frame (1), support (3) and tie rod (2) are hoisted.

6. The construction method for the arc-shaped sound barrier steel structure according to claim 4, characterized in that, In step S250, the inspection and correction of the steel frame (1) includes the following steps: Step S251: After the steel frame (1) is hoisted, check the verticality of the steel frame (1); Step S252: Steel frame (1) alignment; Step S253: The ridge of the steel frame (1) is straightened to the point that the ridge lines of each steel frame (1) are collinear.

7. The construction method for the arc-shaped sound barrier steel structure according to claim 2, characterized in that, In step S120, the steel structure is assembled and welded to form a steel frame (1), which includes the following steps: Step S121: Steel structure panel assembly; Step S122: H-beam fabrication; Step S123: Painting.

8. The construction method for the arc-shaped sound barrier steel structure according to claim 7, characterized in that, In step S121, the steel structure panels include: Step S1211: Steel plate inspection and re-inspection; Step S1212: Leveling the steel plate; Step S1213: CNC cutting and blanking, Step S1214: Splice the panels together; Step S1215: Steel structure panel fabrication completed.

9. The construction method for the arc-shaped sound barrier steel structure according to claim 7, characterized in that, In step S122: the fabrication of the H-beam includes; Step S1221: Secondary leveling of steel structure panels; Step S1222: Web beveling; Step S1223: Assemble, weld, and straighten the H-beams; Step S1224: Welding of the corbel and stiffening plate; Step S1225: Dimensional inspection.

10. The construction method for the arc-shaped sound barrier steel structure according to any one of claims 1-9, characterized in that, In step 300, the column base grouting includes the following steps: Step S310: Substrate cleaning; Step S320: Wet the grouting contact surface; Step S330: Set up the template; Step S340: Grouting material mixing and grouting; Step S350: Curing, demolding and cleaning; Step S360: Column base grouting completed.

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