Auxiliary positioning device for one-time pouring forming of roadbed sound barrier stand column

Abstract

The utility model relates to an installation auxiliary device for one-time pouring forming of a roadbed sound barrier steel stand column and a foundation, in particular to an auxiliary positioning device for one-time pouring forming of a roadbed sound barrier stand column. Comprising a rectangular supporting frame, stand columns are welded to the bottom ends of the four corners of the rectangular supporting frame respectively, and adjustable lead screws are screwed to the bottom ends of the stand columns; a pair of movable cross beams are connected to a set of opposite frames of the rectangular supporting frame through positioning bolts. Two second strip-shaped holes are formed in the middle of each movable cross beam, the middles of the two movable cross beams are connected with a set of fixing angle steel through positioning bolts and the second strip-shaped holes, and a sound barrier stand column is connected between the two fixing angle steel through positioning bolts; the horizontal strip-shaped holes and the vertical screw threads are additionally arranged on the foundation structure, the effect of micro adjustment of the space position after the stand column is installed is achieved, the standard of accurately fixing the sound barrier stand column is achieved, and the precision requirement for one-time forming of the inserted roadbed sound barrier stand column and the foundation is improved.

Description

Technical Field

[0001] The utility model relates to an auxiliary device for one-time casting and molding installation of steel upright posts and foundations of roadbed sound barriers, and in particular to an auxiliary positioning device for one-time casting and molding of upright posts of roadbed sound barriers. Background Art

[0002] Noise pollution is one of the four major environmental hazards recognized by the world today. With the rapid development of railway transportation in recent years, while improving people's travel ability and quality of life, it also brings negative impacts, and high-speed railway noise pollution is the most prominent. Building sound barriers on both sides of the railway is an effective measure to improve the noise environment quality along the railway and around the station.

[0003] The sound barriers of railways, highways, etc. are all supported by H-shaped steel columns. The H-shaped steel columns are connected and installed by using embedded steel plates and anchor bolts buried in the foundation. After the foundation is cast in place, it is leveled. After the verticality is met, friction-type high-strength bolts are used to connect with the embedded parts to form the support system of the sound barrier.

[0004] The H-shaped steel columns in the high-speed railway roadbed sound barrier are supported by pile foundations. Combined with the strong wind climate, in order to improve the construction quality and service life of the sound barrier, reduce the process steps, reduce the loose bolts at the connection between the H-shaped steel columns and the foundation after completion, reduce the mortar, concrete cracks and other defects, and reduce the maintenance cost. The bolt-connected roadbed sound barrier is optimized to an inserted-connected roadbed sound barrier, and the H-shaped steel columns are inserted into the pile foundation and cast together with the pile foundation at one time, which has improved the construction quality of the steel columns.

[0005] In the construction of the subgrade sound barrier with plug-in connection, the weight of the column is large, and the verticality and precision are difficult to control due to the simultaneous pouring of the concrete with the pile foundation, which can easily lead to safety hazards and cause major defects. The quality of the steel column directly affects the quality of the sound barrier project, and even worse, rework is required, causing serious economic losses. The H-shaped steel column of the subgrade sound barrier adopts the plug-in connection method. When fixing, if the column is inserted immediately after the concrete is poured and before the initial setting, due to the characteristics of the concrete and steel column, the insertion is difficult, and the depth and angle cannot be controlled. When pouring together with the pile foundation, the steel column is suspended above the foundation before pouring. If it is not firmly fixed, there is a risk of falling into the pile hole (or independent foundation). At the same time, the spatial position and verticality accuracy of the column are difficult to control. Traditional fixing methods are not satisfactory.

[0006] Therefore, it is necessary to design a high-precision and simple auxiliary positioning device for casting the sound barrier columns and foundation in one step to solve the above problems. Summary of the invention

[0007] The utility model overcomes the shortcomings of the prior art and provides an auxiliary positioning device for one-time casting of roadbed sound barrier columns.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is: an auxiliary positioning device for one-time casting of roadbed sound barrier columns, including a rectangular support frame, the bottom ends of the four corners of the rectangular support frame are respectively welded with columns, the bottom ends of the columns are swivel-equipped with adjustable screws, and the bottoms of the adjustable screws are rotatably connected to bottom brackets; a pair of movable beams are connected to a group of relative frame frames of the rectangular support frame by positioning bolts, and the frames of the rectangular support frame connected to the movable beams are respectively provided with first strip holes distributed along the length direction of the frames, and the positioning bolts are connected to the movable beams after passing through the first strip holes; the middle parts of the movable beams are respectively provided with two second strip holes distributed along the length direction of the movable beams, and the middle parts of the two movable beams are also connected to a group of fixed angle steels by positioning bolts and the second strip holes, and the sound barrier columns are connected between the two fixed angle steels by positioning bolts.

[0009] The auxiliary positioning device includes a base, a lead screw, a vertical rod, a diagonal brace, and primary and secondary keels, which together form a small truss-type support system. A movable crossbeam and a fixed angle steel for locking the H-shaped steel are arranged on the upper part of the support system. A perforation is provided on the movable crossbeam to achieve the purpose of fine adjustment.

[0010] Furthermore, the rectangular support frame includes two mutually parallel main keels and two mutually parallel secondary keels connected together, the two ends of the movable crossbeam are connected to the two secondary keels, and the first strip holes are distributed along the length direction of the secondary keels.

[0011] Furthermore, a diagonal brace is fixedly connected between the secondary keel and the column.

[0012] Furthermore, an annular protrusion is provided at the bottom of the adjustable screw, and the corresponding base is provided with an annular groove matching the protrusion. The protrusion of the adjustable screw is embedded in the annular groove of the base, thereby realizing the rotational connection between the adjustable screw and the base.

[0013] Furthermore, the diameter of the column is Ф42mm, the main keel and the secondary keel are made of I12 channel steel or special square steel; the movable crossbeam is made of I12 channel steel or special square steel.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model adopts a four-leg structure, which mainly plays the role of bearing and unloading when the column is installed, increases the stability of the column before and after installation, and reduces safety hazards during construction.

[0016] 2. The utility model adds horizontal strip holes and vertical threads on the basic structure, which plays a role in micro-adjustment of the spatial position of the column after installation, achieves the standard of accurately fixing the sound barrier column, and improves the precision requirement of one-time molding of the inserted roadbed sound barrier column and the foundation.

[0017] 3. The device is simple, easy to implement, low-cost, and has a high safety factor. It can meet the construction production tasks and quality and achieve the project's goal of "reducing costs and increasing efficiency". This device can be widely used in the construction of inserted roadbed sound barriers. It has strong applicability and can be promoted as a priority. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a wide-angle drawing of the auxiliary positioning device for one-time casting of roadbed sound barrier columns of the utility model.

[0019] Figure 2 It is a front view of the auxiliary positioning device for one-time casting of roadbed sound barrier columns of the utility model.

[0020] Figure 3 It is a side view of the auxiliary positioning device for one-time casting of roadbed sound barrier columns of the utility model.

[0021] Figure 4 It is a top view of the auxiliary positioning device for one-time casting of roadbed sound barrier columns of the utility model.

[0022] The following are marked in the figure:

[0023] 1- base support, 2- adjustable screw rod, 3- column, 4- diagonal brace, 5- main keel, 6- movable beam, 7- fixed angle steel, 8- positioning bolt, 9- sound barrier column, 10- secondary keel. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. Example

[0025] like Figure 1-4As shown, an auxiliary positioning device for one-time casting of roadbed sound barrier columns comprises a rectangular support frame, the bottom ends of the four corners of the rectangular support frame are respectively welded with columns 3, the bottom ends of the columns 3 are swivel-mounted with adjustable screw rods 2, and the bottom of the adjustable screw rods 2 is rotatably connected to the base 1; a pair of movable beams 6 are connected to a group of relative frame frames of the rectangular support frame through positioning bolts 8, and the frames of the rectangular support frame connected to the movable beams 6 are respectively provided with first strip holes distributed along the length direction of the frames, and the positioning bolts 8 are connected to the movable beams 6 after passing through the first strip holes; the middle parts of the movable beams 6 are respectively provided with two second strip holes distributed along the length direction of the movable beams 6, and the middle parts of the two movable beams 6 are also connected to a group of fixed angle steels 7 through the positioning bolts 8 and the second strip holes, and the sound barrier columns 9 are connected between the two fixed angle steels 7 through the positioning bolts 8.

[0026] Furthermore, the rectangular support frame includes two mutually parallel main keels 5 and two mutually parallel secondary keels 10 connected together, the two ends of the movable crossbeam 6 are connected to the two secondary keels 10 , and the first strip holes are distributed along the length direction of the secondary keels 10 .

[0027] Furthermore, a diagonal brace 4 is fixedly connected between the secondary keel 10 and the column 3 to enhance the stability of the truss support system.

[0028] Furthermore, an annular protrusion is provided at the bottom of the adjustable screw rod 2, and the corresponding base 1 is provided with an annular groove matching the protrusion. The protrusion of the adjustable screw rod 2 is embedded in the annular groove of the base 1 to realize the rotational connection between the adjustable screw rod 2 and the base 1.

[0029] Furthermore, the diameter of the column 3 is Ф42 mm, the main keel 5 and the secondary keel 10 are made of I12 channel steel or special square steel; the movable crossbeam 6 is made of I12 channel steel or special square steel.

[0030] The installation and use process of the above auxiliary positioning device is as follows:

[0031] ① Prepare processing materials: channel steel, steel pipe, steel plate, threaded steel, and prepare them according to the fixed structure shown in the attached figure and the actual size required for the corresponding project;

[0032] ② Auxiliary positioning device material cutting: After determining the size and length of the material, weld and fix the nodes of each rod to form a truss support system;

[0033] ③ The pile foundation is drilled, the pile foundation steel cage is placed and inspected, and at the same time, the angle steel 7 is bolted (or welded) in advance on both sides of a certain height in the opposite direction of the bottom of the H-steel column of the sound barrier.

[0034] ④ Place the auxiliary fixing device and determine the plane position: Use the leg adjustment rod (i.e., adjustable screw 2) in the auxiliary positioning device as the pile foundation guard, adjust the rod to pull the wire diagonally, and use RTK to verify the center of the pile foundation. When the intersection of the wire coincides with the center of the pile foundation, the auxiliary fixing device is aligned. Then remove the wire, and repeat this process to achieve the rough flatness requirement of the plane position of the auxiliary fixing device.

[0035] ⑤Install the H-steel column (i.e., the sound barrier column 9): Use the truck crane to slowly lift the steel column. When the lower anchor end of the steel column is hoisted into the pile foundation, use the fixed angle steel 7 installed on the steel column and the movable beam on the auxiliary fixing device for support. After the steel column adjusts the angle steel to contact the movable beam, the truck crane retracts the force, and this process is repeated.

[0036] ⑥ Rough adjustment of the steel column (i.e. the sound barrier column 9): After the steel column is placed stably, take three φ25 steel bars and insert them into the ground along the direction of the steel wire rope as the force points of the rope tightener. Then the three steel wire ropes on the top of the steel column are tightened respectively. The steel wire rope passes through the rope tightener. One end of the rope tightener with a hook hooks the φ25 steel bar. By adjusting the rope tightener, the steel column is initially made vertical.

[0037] ⑦ Plane position fine-tuning: According to the H-type column spacing, measure with a ruler, move the crossbeam 6 left and right, and move the fixed angle steel 7 forward and backward, so as to adjust the plane position of the steel column.

[0038] ⑧ Fine adjustment of elevation: Use a level to calculate the height that needs to be adjusted, and rotate the adjustment rod at the bottom of the steel frame to adjust the height of the steel column.

[0039] ⑨ Check the steel columns: After confirming the correct spatial position by measuring with a ruler, use the adjusting rope tightener to fix it for a second time to ensure the absolute stability of the steel columns when pouring concrete.

[0040] ⑩ Pouring concrete: Pour the pile foundation concrete. After the strength meets the requirements, remove the adjusting angle steel on the H-shaped steel column, loosen the movable beam, hoist out the auxiliary fixing device, and transfer to the next cycle of construction.

[0041] The utility model is applied to the construction of plug-in-type connected sound barriers in the XYZQ-11 bidding section of the pre-station project of the Tongchuan to Yan'an section of the newly built Xi'an to Yan'an high-speed railway.

[0042] The scope of protection claimed by the utility model is not limited to the above-mentioned sound barrier engineering with inserted connection to the roadbed. For those skilled in the art, the utility model can be applied in related engineering fields where inserted columns and foundations are cast in one go. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A one-time casting auxiliary positioning device for roadbed sound barrier columns, characterized in that: The invention comprises a rectangular support frame, wherein the bottom ends of the four corners of the rectangular support frame are respectively welded with columns (3), the bottom ends of the columns (3) are rotatably equipped with adjustable screw rods (2), and the bottom of the adjustable screw rods (2) is rotatably connected to a bottom bracket (1); a pair of movable beams (6) are connected to a set of opposite frames of the rectangular support frame through positioning bolts (8), and the frames of the rectangular support frame connected to the movable beams (6) are respectively provided with first strip holes distributed along the length direction of the frames, and the positioning bolts (8) are connected to the movable beams (6) after passing through the first strip holes; the middle parts of the movable beams (6) are respectively provided with two second strip holes distributed along the length direction of the movable beams (6), and the middle parts of the two movable beams (6) are also connected to a set of fixed angle steels (7) through the positioning bolts (8) and the second strip holes, and a sound barrier column (9) is connected between the two fixed angle steels (7) through the positioning bolts (8).

2. The one-time casting auxiliary positioning device for roadbed sound barrier columns according to claim 1 is characterized in that: The rectangular support frame comprises two mutually parallel main keels (5) and two mutually parallel secondary keels (10) connected together, the two ends of the movable crossbeam (6) are connected to the two secondary keels (10), and the first strip holes are distributed along the length direction of the secondary keels (10).

3. The one-time casting auxiliary positioning device for roadbed sound barrier columns according to claim 2 is characterized in that: A diagonal brace (4) is also fixedly connected between the secondary keel (10) and the column (3).

4. The one-time casting auxiliary positioning device for roadbed sound barrier columns according to claim 1 is characterized in that: The bottom of the adjustable screw (2) is provided with an annular protrusion, and the corresponding base (1) is provided with an annular groove matching the protrusion. The protrusion of the adjustable screw (2) is embedded in the annular groove of the base (1), thereby realizing the rotational connection between the adjustable screw (2) and the base (1).

5. The one-time casting auxiliary positioning device for roadbed sound barrier columns according to claim 2 is characterized in that: The diameter of the column (3) is Φ42 mm, the main keel (5) and the secondary keel (10) are made of I12 channel steel or special square steel; the movable crossbeam (6) is made of I12 channel steel or special square steel.

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