A construction technology for thin-walled bridge piers and a template misalignment prevention device

Abstract

The invention discloses a construction process for a thin-walled bridge pier and a template anti-misalignment device thereof, which relate to the field of engineering construction, and include step one, construction preparation; step two, setting a concrete pouring area; step three, installing a bridge thin-walled pier template; step four, installing a misalignment template adjuster; step five, fixing the bridge thin-walled pier template; step six, reinforcing bar arrangement; step seven, pouring concrete; during adjustment, the misalignment template adjuster of the bridge thin-walled pier template is temporarily installed on two adjacent templates that need to adjust the flatness of the bridge thin-walled pier template joint, firstly, the adjusting bolts of the misalignment template adjuster on the bridge thin-walled pier template are pre-tightened respectively, and misalignment adjustment is started according to the misalignment of the bridge thin-walled pier template, the tightening process of the adjusting bolt should be slow, and after the misalignment adjustment is completed, the thin-walled pier template bolt is tightened to pour concrete, and the application improves the construction efficiency, construction quality and safety of the bridge thin-walled pier pier column, and reduces the construction joints generated when the layered pouring template is fixed.

Description

Technical Field

[0001] The invention mainly relates to the technical field of engineering construction, and specifically relates to a construction process for a thin-walled bridge pier and a template anti-misalignment device thereof. Background Art

[0002] With the vigorous promotion of quality engineering construction in my country, formwork misalignment is also one of the common problems in concrete construction. Formwork misalignment refers to the phenomenon that the two plates produce relative vertical displacement at the joints or cracks on the surface of the formwork. If it is not handled properly, it will cause leakage during concrete pouring and concrete misalignment after formwork removal. In the construction of tall piers, large steel formworks are used. Due to the height of the pier, after the pier formwork is assembled, the joints between the formworks are prone to misalignment, which not only affects the appearance quality of the pier, but also has technical requirements for misalignment in construction quality. The defects and shortcomings of misalignment mainly include: thin-walled pier split mold casting, resulting in larger construction joints; integrated casting has extremely high requirements for formwork and temporary protective measures, which is not suitable for most construction situations; In order to ensure the appearance quality of the tall pier body and reduce the misalignment at the joint of the steel formwork, misalignment adjustment is required. The traditional method of misalignment adjustment mostly uses a crowbar or hammer to splice the formwork into place. On the one hand, the adjustment is not in place, affecting the appearance quality. On the other hand, the assemblers need to spend a lot of physical strength and time, which also has a certain impact on the safety of the construction workers, low operating efficiency and affecting the progress of the project. Summary of the invention

[0003] Based on this, the purpose of the present invention is to provide a construction process for thin-walled bridge piers and a template anti-misalignment device thereof to solve the technical problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A construction process for a thin-wall bridge pier comprises the following steps: Step 1: Construction preparation: clarify the construction sequence, methods, equipment and safety requirements before construction; Step 2: Set up a concrete pouring area. Set up a temporary concrete pouring area on the ground according to the design diagram, and perform foundation treatment. Then, mix coarse aggregate, fine aggregate, cement, formwork glue and pumping agent materials in proportion, and set up fences around the pouring area to prevent the intrusion of debris. Step 3: Install the bridge thin-wall pier formwork, assemble the prepared bridge thin-wall pier formwork together, and observe the misalignment of the bridge thin-wall pier formwork after installing the bridge thin-wall pier formwork; Step 4: Install the bridge thin-wall pier template misalignment template adjuster. After the installation is completed, first adjust the left and right adjacent templates through the template adjuster, and then adjust the upper and lower adjacent templates; Step 5: Fix the bridge thin-walled pier template. After adjusting the template adjuster, observe and confirm the misalignment of the bridge thin-walled pier template. After adjusting it to be flat, tighten the fixing bolts of the bridge thin-walled pier template. Step 6: Steel bar arrangement: arrange the main reinforcement and structural reinforcement in the bridge thin-wall pier formwork according to the design diagram, and weld them to the formwork embedded parts. The main reinforcement is used for the stress reinforcement, and the structural reinforcement is used to enhance the bearing capacity of the stress reinforcement; Step seven: pour concrete, remove the formwork adjuster body, and pour concrete.

[0005] Specifically, the technical solution of the present invention further comprises in step four that the misaligned template adjuster is temporarily installed on two adjacent thin-walled bridge pier templates that need to adjust the flatness of the template joints. When adjusting, the two adjustment bolts of the misaligned template adjuster are pre-tightened respectively. According to the misalignment situation, one of the adjustment bolts of the misaligned template adjuster is tightened forcefully, and the adjustment is started. The tightening process should be slow. According to the actual situation on site, the adjustment bolts of the two misaligned template adjusters are tightened or loosened respectively until the expected effect is achieved.

[0006] Specifically, the technical solution includes in step five that after the adjustment of the bridge thin-walled pier formwork is completed, the bridge thin-walled pier formwork bolts are immediately installed to avoid removing the misaligned formwork adjuster body first, which causes the bridge thin-walled pier formwork to be misaligned again.

[0007] According to the above construction process of a thin-walled bridge pier, a template anti-misalignment device for a thin-walled bridge pier will also be provided, including a thin-walled bridge pier template and a misalignment template adjuster body for adjusting the misalignment of the thin-walled bridge pier template, the misalignment template adjuster body including an adjustment template body, a force conduction steel plate, a first adjustment bolt and a second adjustment bolt, the adjustment template body is arranged in a rectangular structure, an adjustment groove is opened in the middle part of the adjustment template body near one of the outer edges, a first through hole is opened through the bottom of the adjustment template body below the adjustment groove, a first adjustment nut is built in the first through hole, a second through hole is opened on the adjustment template body on one side of the adjustment groove, a second adjustment nut is built in the second through hole, and the force conduction steel plate is vertically located inside the adjustment groove.

[0008] Specifically, the first adjusting bolt is located vertically at the bottom of the adjusting template body, the first adjusting bolt passes through the first adjusting nut and is threadedly connected to the first adjusting nut, the second adjusting bolt is located parallel to the outer side of the adjusting template body, and the second adjusting bolt thread passes through the end of the second adjusting nut and movably abuts against the force conduction steel plate.

[0009] Specifically, the adjusting template body is made of 700mm*300mm steel plate, and the first adjusting bolt and the second adjusting bolt are M20 bolts.

[0010] Specifically, the technical solution of the present invention is that the height of the force conduction steel plate is smaller than the height of the adjustment groove.

[0011] In summary, the present invention mainly has the following beneficial effects: This application improves the safety of thin-wall bridge pier construction, has high construction efficiency and ensures construction quality, and greatly reduces the impact of construction joints caused by the fixing of layered casting templates; The operation is simple. For the relative position fixation problem between the layered templates, two control template fixing bolts are added to control the relative position between the templates during the template modification and replacement process, effectively reducing the template dislocation caused by construction disturbance and other factors during the multi-mode construction process, which in turn causes the construction quality problem of the multi-mode construction pier column offset at the construction joint; Compared with the previous direct splicing of templates, the use of the offset template adjuster will reduce the offset displacement of the lower template during the subsequent template installation, effectively reducing the quality problems caused by template offset due to construction errors. The construction is convenient and labor costs are saved. No additional labor is required, and no additional manpower consumption will be caused. The use of the staggered formwork adjuster can effectively improve the construction quality of thin-walled piers, improve the overall construction level of the project, achieve the purpose of improving economic benefits, realize the standardization and normalization of thin-walled pier formwork, and thus improve the construction quality level of bridge projects. In addition, the device has a simple structure, is easy for workers to operate, and is quick to get started. Compared with traditional construction methods, it has improved the project construction level to a considerable extent and has good social benefits. Temporarily install the misaligned template adjuster of the bridge thin-walled pier template on the two adjacent templates that need to adjust the flatness of the bridge thin-walled pier template joints, ensure that the adjustment groove is connected to the misalignment of the bridge thin-walled pier template, place the force conduction steel plate in the adjustment groove on one side of the bridge thin-walled pier template, first pre-tighten the first adjusting bolt and the second adjusting bolt of the misaligned template adjuster on the bridge thin-walled pier template, according to the misalignment of the bridge thin-walled pier template, tighten one of the first adjusting bolts, and start adjusting the misalignment. The process of tightening the second adjusting bolt should be slow. According to the actual situation on site, the two adjusting bolts can be tightened or loosened separately until the expected effect is achieved. First adjust the two adjacent templates on the left and right, and then adjust the two adjacent templates on the upper and lower. After adjusting through the template adjuster, re-observe the template misalignment. The misalignment has been resolved, and finally tighten the bolts of the thin-walled pier template. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a flowchart of the construction process of the present invention; Figure 2 It is a schematic diagram of the connection between the bridge thin-wall pier formwork and the staggered formwork adjuster body of the present invention; Figure 3 This is an axonometric view of the staggered template adjuster body of the present invention; Figure 4 It is a schematic diagram of the structure of the staggered template regulator body of the present invention; Figure 5 The present invention is a flowchart of the construction process of the staggered template adjuster body.

[0013] Description of the drawings: 1. Adjustment template body; 11. Adjustment groove; 12. First through hole; 121. First adjustment nut; 13. Second through hole; 131. Second adjustment nut; 2. Force conduction steel plate; 3. First adjustment bolt; 4. Second adjustment bolt. DETAILED DESCRIPTION

[0014] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0015] The following describes an embodiment of the present invention based on its overall structure. Example

[0016] Please refer to the attached Figures 1 to 5 As shown, a construction process for a thin-walled bridge pier comprises the following steps: Step 1: Construction preparation: clarify the construction sequence, methods, equipment and safety requirements before construction; Step 2: Set up a concrete pouring area. Set up a temporary concrete pouring area on the ground according to the design diagram, and perform foundation treatment. Then, mix coarse aggregate, fine aggregate, cement, formwork glue, pumping agent and other materials in proportion, and set up fences around the pouring area to prevent the intrusion of debris. Step 3: Install the bridge thin-wall pier formwork, assemble the prepared bridge thin-wall pier formwork together, and observe the misalignment of the bridge thin-wall pier formwork after installing the bridge thin-wall pier formwork; Step 4: Install the bridge thin-wall pier template misalignment template adjuster. After the installation is completed, first adjust the left and right adjacent templates through the template adjuster, and then adjust the upper and lower adjacent templates; Step 5: Fix the bridge thin-walled pier template. After adjusting the template adjuster, re-observe the misalignment of the bridge thin-walled pier template. After adjusting it to be flat, tighten the fixing bolts of the bridge thin-walled pier template. Step 6: Steel bar arrangement: arrange the main bars and structural bars in the bridge thin-wall pier formwork according to the design diagram, and weld them to the formwork embedded parts. The main bars are used for stress bars, and the structural bars are used to enhance the bearing capacity of stress bars. Step seven: pour concrete, remove the formwork adjuster body, and pour concrete.

[0017] Step four also includes temporarily installing the misaligned template adjuster on two adjacent bridge thin-walled pier templates that need to adjust the flatness of the template joint. When adjusting, first pre-tighten the two adjustment bolts of the misaligned template adjuster respectively. According to the misalignment situation, tighten one of the adjustment bolts of the misaligned template adjuster and start adjusting. The tightening process should be slow. According to the actual situation on site, the adjustment bolts of the two misaligned template adjusters can be tightened or loosened respectively until the expected effect is achieved. Step five also includes immediately installing the bridge thin-walled pier template bolts after the adjustment of the bridge thin-walled pier template is completed, so as to avoid removing the misaligned template adjuster body first, which will cause the bridge thin-walled pier template to be misaligned again.

[0018] It should be noted that in this embodiment, during the construction process, the construction worker promptly conducts technical briefings to the team, strictly controls the construction methods, steps, equipment, and personnel in accordance with the construction specifications and standards, and promptly prepares various quality records. During the construction, the bridge thin-wall pier formwork is observed and maintained. When an abnormality or looseness occurs, it should be handled in a timely manner according to the construction technical plan; The staggered template adjuster is used to carry out risk assessment and preventive measures in advance. The staggered template adjuster is used to adjust the staggered thin-walled pier template of the bridge. The process is simple and efficient. The staggered template adjuster is durable and easy for operators to get started and operate. The adjustment effect is good, which can effectively control the misalignment of the bridge thin-wall pier template joints and improve the appearance of the pier body; Low cost, wide application range, suitable for all thin-wall pier formwork misalignment adjustment, reducing the cost of later appearance decoration and improving construction efficiency; Furthermore, the equipment of this method is simple and practical, and the operators can get started quickly. It has obvious improvements over the traditional backward methods in terms of safety and quality, and has obvious improvements in the safety of the operators. It has the characteristics of low cost investment, easy operation and quick results.

[0019] See also Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, according to the above embodiments, a formwork misalignment prevention device for a bridge thin-walled pier will also be provided, comprising a bridge thin-walled pier formwork and a misalignment formwork adjuster body for misalignment adjustment of the bridge thin-walled pier formwork, the misalignment formwork adjuster body comprising an adjustment formwork body 1, a force conduction steel plate 2, a first adjustment bolt 3 and a second adjustment bolt 4, the adjustment formwork body 1 is arranged in a rectangular parallelepiped structure, an adjustment groove 11 is provided in the middle of the adjustment formwork body 1 near one side outer edge, a first through hole 12 is provided through the bottom of the adjustment formwork body 1 below the adjustment groove 11, a first adjustment nut 121 is built in the first through hole 12, a second through hole 13 is provided on the adjustment formwork body 1 on one side of the adjustment groove 11, a second adjustment nut 131 is built in the second through hole 13, and the force conduction steel plate 2 is vertically located inside the adjustment groove 11; The first adjusting bolt 3 is vertically located at the bottom of the adjusting template body 1, and the first adjusting bolt 3 passes through the first adjusting nut 121 and is connected with its thread. The second adjusting bolt 4 is parallelly located on the outer side of the adjusting template body 1, and the second adjusting bolt 4 passes through the second adjusting nut 131 and the end thereof is movably abutted against the force transmission steel plate 2. The adjusting template body 1 adopts a 700mm*300mm steel plate, and the first adjusting bolt 3 and the second adjusting bolt 4 are M20 bolts. The height of the force transmission steel plate (2) is less than the height of the adjustment groove (11).

[0020] It should be noted that in this embodiment, the construction management personnel and construction workers must wear safety helmets correctly, and must wear insulating gloves and insulating shoes when working with electricity; Temporarily install the misaligned template adjuster of the bridge thin-walled pier template on the two adjacent templates that need to adjust the flatness of the bridge thin-walled pier template joint, place the force transmission steel plate 2 in the adjustment groove 11 on one side of the bridge thin-walled pier template, first pre-tighten the first adjustment bolt 3 and the second adjustment bolt 4 of the misaligned template adjuster on the bridge thin-walled pier template respectively, according to the misalignment of the bridge thin-walled pier template, tighten one of the adjustment bolts with force, and start adjusting, the tightening process should be slow, the second adjustment bolt 4 is rotated to adjust the misalignment through the force transmission steel plate 2, according to the actual situation on site, the two adjustment bolts can be tightened or loosened respectively until the expected effect is achieved, first adjust the left and right adjacent templates, and then adjust the upper and lower adjacent templates, re-observe the template misalignment after adjustment through the template adjuster, the misalignment has been resolved, finally tighten the bolts of the thin-walled pier template, and then pour concrete; Furthermore, the material of the adjusting template body 1 is welded or opened by steel plates, bolts are arranged on the adjusting template body 1 and one side, the first adjusting bolt 3 is used to fix the misalignment template adjuster on the bridge thin-walled pier template, and the second adjusting bolt 4 is used to adjust the misalignment of the bridge thin-walled pier template; Further, according to the misalignment of the bridge thin-wall pier template, the second adjusting bolt 4 is tightened with force and the adjustment is started. The tightening process should be slow. According to the actual situation on site, the first adjusting bolt 3 and the second adjusting bolt 4 can be tightened or loosened respectively until the expected effect is achieved. First, the left and right adjacent templates are adjusted, and then the upper and lower adjacent templates are adjusted. Furthermore, after the adjustment of the misalignment of the bridge thin-walled pier formwork is completed, the bridge thin-walled pier formwork bolts are installed immediately to avoid removing the misalignment formwork adjuster first, which will cause the formwork to be misaligned again; Furthermore, the staggered template adjuster does not require additional labor, the steel plates, bolts and nuts used in the material can be reused, and the tools used are only ordinary electric welders and gas cutting torches. Compared with the traditional method, there is no substantial increase in costs, the cost is low, and the technical threshold of operators is lowered. Operators can quickly get started and are willing to actively carry out the work according to the requirements, so the quality is guaranteed and the management efficiency is improved; The working principle of the present invention is: The construction process includes the following steps: Step 1: Construction preparation: clarify the construction sequence, methods, equipment and safety requirements before construction; Step 2: Set up a concrete pouring area. Set up a temporary concrete pouring area on the ground according to the design diagram, and perform foundation treatment. Then, mix coarse aggregate, fine aggregate, cement, formwork glue, pumping agent and other materials in proportion, and set up fences around the pouring area to prevent the intrusion of debris. Step 3: Install the bridge thin-wall pier formwork, assemble the prepared bridge thin-wall pier formwork together, and observe the misalignment of the bridge thin-wall pier formwork after installing the bridge thin-wall pier formwork; Step 4, install the bridge thin-walled pier template misalignment template adjuster. After the installation is completed, first adjust the left and right adjacent templates through the template adjuster, and then adjust the upper and lower adjacent templates. When adjusting the misalignment, temporarily install the misalignment template adjuster of the bridge thin-walled pier template on the two adjacent templates that need to adjust the flatness of the bridge thin-walled pier template joints, ensure that the adjustment groove 11 is clamped at the misalignment of the bridge thin-walled pier template, place the force conduction steel plate 2 in the adjustment groove 11 on one side of the bridge thin-walled pier template, and first pre-tighten the first adjustment bolt 3 and the second adjustment bolt 4 of the misalignment template adjuster on the bridge thin-walled pier template respectively; According to the misalignment of the bridge thin-walled pier template, tighten one of the adjustment bolts and start adjusting. The tightening process should be slow. According to the actual situation on site, the two adjustment bolts can be tightened or loosened respectively until the expected effect is achieved. First, adjust the two adjacent templates on the left and right, and then adjust the two adjacent templates on the top and bottom. After adjusting through the template adjuster, re-observe the misalignment of the template. If the misalignment has been resolved, finally tighten the bolts of the thin-walled pier template. Step 5: Fix the bridge thin-walled pier template. After adjusting the template adjuster, re-observe the misalignment of the bridge thin-walled pier template. After adjusting it to be flat, tighten the fixing bolts of the bridge thin-walled pier template. Step 6: Steel bar arrangement: arrange the main bars and structural bars in the bridge thin-wall pier formwork according to the design diagram, and weld them to the formwork embedded parts. The main bars are used for stress bars, and the structural bars are used to enhance the bearing capacity of stress bars. Step seven: pour concrete, remove the formwork adjuster body, and pour concrete.

[0021] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A construction process for thin-walled bridge piers, characterized in that: The process comprises the following steps: Step 1: Construction preparation: clarify the construction sequence, methods, equipment and safety requirements before construction; Step 2: Set up a concrete pouring area. Set up a temporary concrete pouring area on the ground according to the design diagram, and perform foundation treatment. Then, mix coarse aggregate, fine aggregate, cement, formwork glue and pumping agent materials in proportion, and set up fences around the pouring area to prevent the intrusion of debris. Step 3: Install the bridge thin-wall pier formwork, assemble the prepared bridge thin-wall pier formwork together, and observe the misalignment of the bridge thin-wall pier formwork after installing the bridge thin-wall pier formwork; Step 4: Install the bridge thin-wall pier template misalignment template adjuster. After the installation is completed, first adjust the left and right adjacent templates through the template adjuster, and then adjust the upper and lower adjacent templates; Step 5: Fix the bridge thin-walled pier template. After adjusting the template adjuster, observe and confirm the misalignment of the bridge thin-walled pier template. After adjusting it to be flat, tighten the fixing bolts of the bridge thin-walled pier template. Step 6: Steel bar arrangement: arrange the main reinforcement and structural reinforcement in the bridge thin-wall pier formwork according to the design diagram, and weld them to the formwork embedded parts. The main reinforcement is used for the stress reinforcement, and the structural reinforcement is used to enhance the bearing capacity of the stress reinforcement; Step seven: pour concrete, remove the formwork adjuster body, and pour concrete.

2. The construction process of a thin-wall bridge pier according to claim 1, characterized in that: The step four also includes temporarily installing the offset template adjuster on two adjacent bridge thin-wall pier templates whose template joint flatness needs to be adjusted. When adjusting, the two adjustment bolts of the offset template adjuster are pre-tightened respectively. According to the offset situation, one of the adjustment bolts of the offset template adjuster is tightened and adjustment begins. According to the actual situation on site, the adjustment bolts of the two offset template adjusters are tightened or loosened respectively until the expected effect is achieved.

3. The construction process of a thin-wall bridge pier according to claim 1, characterized in that: The step five also includes installing the bridge thin-walled pier formwork bolts immediately after the bridge thin-walled pier formwork adjustment is completed, so as to avoid removing the misaligned formwork adjuster body first, which may cause the bridge thin-walled pier formwork to be misaligned again.

4. A template misalignment prevention device for a bridge thin-walled pier, comprising a bridge thin-walled pier template and a misalignment template adjuster body for misalignment adjustment of the bridge thin-walled pier template, the template misalignment prevention device for the bridge thin-walled pier is applied to the construction process of the bridge thin-walled pier construction process as described in any one of claims 1 to 3 to achieve a template misalignment prevention effect, characterized in that: The misaligned template adjuster body comprises an adjusting template body (1), a force transmission steel plate (2), a first adjusting bolt (3) and a second adjusting bolt (4); the adjusting template body (1) is arranged in a rectangular parallelepiped structure; an adjusting groove (11) is provided in the middle of the adjusting template body (1) near one of the outer edges; a first through hole (12) is provided through the bottom of the adjusting template body (1) below the adjusting groove (11); a first adjusting nut (121) is built into the first through hole (12); a second through hole (13) is provided on the adjusting template body (1) on one side of the adjusting groove (11); a second adjusting nut (131) is built into the second through hole (13); and the force transmission steel plate (2) is vertically located inside the adjusting groove (11).

5. The formwork anti-misalignment device for thin-walled bridge piers according to claim 4 is characterized in that: The first adjusting bolt (3) is vertically located at the bottom of the adjusting template body (1), the first adjusting bolt (3) passes through the first adjusting nut (121) and is threadedly connected thereto, the second adjusting bolt (4) is parallelly located on one side of the outside of the adjusting template body (1), the second adjusting bolt (4) threadedly passes through the end of the second adjusting nut (131) and movably abuts against the force transmission steel plate (2).

6. The formwork misalignment prevention device for thin-walled bridge piers according to claim 5, characterized in that: The adjusting template body (1) is made of a 700 mm*300 mm steel plate, and the first adjusting bolt (3) and the second adjusting bolt (4) are M20 bolts.

7. The formwork misalignment prevention device for thin-wall bridge piers according to claim 5, characterized in that: The height of the force-conducting steel plate (2) is smaller than the height of the adjusting groove (11).

Images