Concrete beam with vibration adjustment structure and construction method thereof

Abstract

The present invention discloses a concrete beam with a vibration regulating structure and a construction method thereof, wherein the concrete beam with a vibration regulating structure comprises: a concrete beam arranged between two concrete columns and a first steel beam arranged between the two concrete columns, the first steel beam and the concrete beam are arranged with an interval up and down, and the concrete beam and the first steel beam are connected by a symmetrically arranged second steel beam; one end of each of the second steel beams is fixedly connected to the concrete beam, and the other end thereof is inclined from the second steel beam to the first steel beam; each of the second steel beams is arranged with a gap between the first steel beam, and the second steel beams are connected to the first steel beam through a vibration reduction connection assembly. The advantages of the present invention are ingenious structure and simple construction, the first steel beam and the second steel beam are fastened to form a whole after being deformed by force, the vertical pre-tension stress between the two can withstand the vibration deformation energy generated by the production equipment, thereby reducing the vibration energy of the concrete beam, and the vibration reduction effect is good and the safety is high.

Description

Technical Field

[0001] The invention relates to the field of construction, in particular to a concrete beam with a vibration regulating structure, and also to a construction method of the concrete beam. Background Art

[0002] With the rapid development of industry, current industrial buildings have also developed from traditional single-story industrial plants to multi-story or high-rise concrete frame plants, so that production equipment has also been transferred from the ground of traditional plants to the floor of concrete frame plants. However, during operation, the production equipment often causes certain vibrations to the surrounding concrete beams, and even resonates with the concrete beams, which not only affects the precision of the production equipment, but also seriously affects the structural stability of the concrete beams, posing a major safety hazard and causing discomfort to the workers in the plant. For this reason, in actual construction, the rigidity is often increased by increasing the cross-section of concrete beams and concrete columns, but the shock absorption effect is not good, and large vibrations will still occur in actual production. Therefore, how to reduce the vibration of concrete beams is an important issue that technicians in this field need to solve. Summary of the invention

[0003] The present invention aims to provide a concrete beam with a vibration regulating structure and also provides a construction method for the concrete beam, thereby achieving vibration reduction of the concrete beam and achieving good vibration reduction effect.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The concrete beam with a vibration reduction and adjustment structure of the present invention comprises a concrete beam arranged between two concrete columns and a first steel beam arranged between the two concrete columns, wherein the first steel beam and the concrete beam are arranged with an interval up and down, and the concrete beam and the first steel beam are connected by a symmetrically arranged second steel beam;

[0006] One end of each of the second steel beams is fixedly connected to the concrete beam and the other end thereof is set in a gap with the first steel beam. The other end of each of the second steel beams is connected to the first steel beam through a vibration-damping connection assembly. The vibration-damping connection assembly includes a vertically arranged connecting steel plate and at least two adjusting screws. The connecting steel plate is fixedly connected to the web of the second steel beam through at least two connecting bolts, and its end is welded to the first steel beam; each of the adjusting screws passes through the second steel beam and the first steel beam near the connecting steel plate in turn, and an adjusting nut is screwed on its end.

[0007] Both ends of the first steel beam are respectively fixedly connected to the first steel plate pre-embedded in the concrete column, and one end of the second steel beam is fixedly connected to the second steel plate pre-embedded in the concrete beam.

[0008] Stiffening ribs for increasing strength are arranged at intervals on the first steel beam.

[0009] The connecting steel plate is provided with at least two long strip bolt holes matched with the connecting bolts.

[0010] A pad with a triangular structure is provided at the end of each adjusting screw rod, and the inclined surface of the pad is fitted with the flange plate of the second steel beam.

[0011] The present invention provides a construction method of a concrete beam with a vibration reduction and adjustment structure, comprising the following steps:

[0012] The first step is to cast a concrete beam between two concrete columns, embed a first steel plate on each concrete column and embed a second steel plate on the concrete beam according to the designed position;

[0013] The second step is to hoist and install the first steel beam, and weld both ends of the first steel beam to the first steel plate respectively;

[0014] The third step is to hang and install the second steel beam, weld one end of the second steel beam to the second steel plate, and set a gap between the other end of the second steel beam and the first steel beam, so that the second steel beam extends obliquely from the concrete beam to the first steel beam;

[0015] The fourth step is to weld one end of the connecting steel plate to the first steel beam according to the designed position; then use the adjusting screw to pass through the pad, the second steel beam near the connecting steel plate and the first steel beam in sequence, and then use the adjusting nut to fasten the first steel beam and the second steel beam together, so that the adjusting screw is in a stressed state; finally, use the connecting bolt to fix the connecting steel plate and the second steel beam together, release the adjusting nut, and complete the fixed connection operation of the second steel beam and the first steel beam;

[0016] Step 5, repeat steps 3 and 4, weld one end of another second steel beam to the second steel plate, and fix the other end of the second steel beam to the first steel beam by connecting the steel plate and adjusting screw.

[0017] The advantages of the present invention are ingenious structure and simple construction. By horizontally arranging the first steel beam and obliquely arranging the second steel beam between the concrete beam and the concrete column, the first steel beam and the second steel beam are deformed by force and fastened to form a whole. The vertical pre-tension stress between the two can withstand the vibration deformation energy generated by the production equipment, thereby reducing the vibration energy of the concrete beam, with good vibration reduction effect and high safety. At the same time, the present invention can also adjust the optimal deformation of the first steel beam and the second steel beam by adjusting the fastening strength of the nut on the screw rod, thereby determining the optimal vertical pre-tension stress between the first steel beam and the second steel beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 This is an enlarged view of the connection between the first steel beam and the second steel beam.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0021] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0022] like Figure 1-3 As shown, the concrete beam with a vibration reduction and adjustment structure of the present invention comprises a concrete beam 2 and a first steel beam 3 arranged between two concrete columns 1, the first steel beam 3 is arranged in parallel above the concrete beam 2 (of course, it can also be arranged below the concrete beam 2 according to actual needs), the concrete beam 2 and the first steel beam 3 are connected by two symmetrically arranged second steel beams 4, and the first steel beam 3 and the second steel beam 4 are both I-shaped steel beams;

[0023] Both ends of the first steel beam 3 are respectively welded to the first steel plate 5 embedded in the side of the concrete column 1 (the anchor bars of the first steel plate 5 are tied together with the steel bars of the concrete column 1);

[0024] The bottoms of the two second steel beams 4 are welded to the second steel plate 6 in the middle of the concrete beam 2. Each second steel beam 4 extends obliquely from the middle of the concrete toward the first steel beam 3. The two second steel beams 4 are in a V-shaped structure.

[0025] The top of the second steel beam 4 is arranged with a gap from the first steel beam 3. The top of each second steel beam 4 is connected to the first steel beam 3 through a vibration reduction connection assembly. The vibration reduction connection assembly includes a vertically arranged connection steel plate 7.1 and two adjusting screws 7.2. The top of the connection steel plate 7.1 is welded to the lower flange plate of the first steel beam 3. The connection steel plate 7.1 is fixedly connected to the web of the second steel beam 4 through two connecting bolts 7.3. Each adjusting screw 7.2 passes through a triangular-shaped pad 7.4 (whose inclined surface is aligned with the second steel plate 6) from bottom to top. The upper flange plate of the second steel beam 4 is bonded together), the upper flange plate of the second steel beam 4 and the lower flange plate of the first steel beam 3 close to the connecting steel plate 7.1, the upper part of the adjusting screw 7.2 is screwed with an adjusting nut 7.5 for adjusting the deformation of the first steel beam 3 and the second steel beam 4, and the vibration energy borne by the concrete beam 2 is adjusted by adjusting the tightness of the adjusting nut 7.5, so that the vibration energy generated by the production equipment is transmitted to the first steel beam 3 and the second steel beam 4, and the vibration reduction effect is good; the two adjusting screws 7.2 are symmetrically arranged front and back to ensure uniform force.

[0026] like Figure 2As shown, two long strip bolt holes 7.6 are symmetrically arranged on the connecting steel plate 7.1. The top of the second steel beam 4 is of a "U" - shaped structure, which is convenient for installation and can achieve the quick connection of the connecting steel plate 7.1 and the second steel beam 4. Stiffeners 8 are welded at intervals on the first steel beam 3 to increase the strength of the first steel beam 3.

[0027] The construction method of the concrete beam of the present invention includes the following steps:

[0028] In the first step, construct the concrete column 1, and embed the first steel plate 5 at the designed position of the concrete column 1 (the anchor bars of the first steel plate 5 are lapped with the steel bars of the concrete column 1); construct the concrete beam 2, and embed the second steel plate 6 at the designed position in the middle of the concrete beam 2;

[0029] In the second step, hoist and install the first steel beam 3. When installing, weld stiffeners 8 at intervals on the first steel beam 3 to increase the strength of the first steel beam 3, and then weld the two ends of the first steel beam 3 to the first steel plate 5 respectively;

[0030] In the third step, hoist and install the second steel beam 4. Cut the bottom of the second steel beam 4 flat according to the designed inclination angle of the second steel beam 4, and then cut off the same - side parts of the upper flange plates at both ends of the second steel beam 4 to make it in a "U" - shaped structure. Grind the web of the second steel beam 4 corresponding to the "U" - shaped structure and reserve two bolt holes; then weld the bottom of the second steel beam 4 to the second steel plate 6;

[0031] In the fourth step, weld the top of the connecting steel plate 7.1 at the designed position of the lower flange plate of the first steel beam 3; two adjusting screws 7.2 pass through the triangular cushion block 7.4, the upper flange plate of the second steel beam 4 and the lower flange plate of the first steel beam 3 from bottom to top in sequence, and then fasten the two adjusting screws 7.2 with adjusting nuts 7.5 respectively, so that the second steel beam 4 and the first steel beam 3 are in a stress - deformed state; finally, fasten the web of the second steel beam 4 and the connecting steel plate 7.1 together with bolts (generally high - strength bolts), and release the adjusting nuts 7.5 to make the adjusting screws 7.2 in a non - stressed state;

[0032] In the fifth step, repeat the third step and the fourth step. Weld one end of another second steel beam 4 to the second steel plate 6, and fix the other end of the second steel beam 4 to the first steel beam 3 by using a connecting steel plate and adjusting screws. After the construction is completed, the two second steel beams are symmetrically arranged in a V - shaped structure.

[0033] During the installation of the present invention, the first steel beam and the second steel beam are in a deformed state by tightening the nuts on the adjusting screws, and then the first steel beam and the second steel beam are fastened to form a whole by using high - strength bolts. When the concrete beam vibrates, the vibration energy generated by the production equipment is jointly borne by the first steel beam and the second steel beam, reducing the vibration energy borne by the concrete beam.

[0034] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A concrete beam with a vibration reduction and adjustment structure, characterized in that: It comprises a concrete beam arranged between two concrete columns and a first steel beam arranged between the two concrete columns, wherein the first steel beam and the concrete beam are arranged with an interval up and down, and the concrete beam and the first steel beam are connected by a symmetrically arranged second steel beam; One end of each of the second steel beams is welded to the second steel plate in the middle of the concrete beam, and each second steel beam extends obliquely from the middle of the concrete beam toward the first steel beam, and the two second steel beams form a V-shaped structure; Each second steel beam is arranged with a gap between it and the first steel beam, and each second steel beam is connected to the first steel beam through a vibration-damping connection assembly, wherein the vibration-damping connection assembly comprises a vertically arranged connection steel plate and at least two adjusting screws, wherein the connection steel plate is fixedly connected to the web of the second steel beam through at least two connecting bolts, and its end is welded to the first steel beam; each adjusting screw sequentially passes through the second steel beam and the first steel beam near the connection steel plate, and an adjusting nut is screwed on its end; Both ends of the first steel beam are respectively fixedly connected to the first steel plate embedded in the concrete column; and stiffening ribs for increasing strength are arranged at intervals on the first steel beam.

2. The concrete beam with a vibration reduction and adjustment structure according to claim 1 is characterized in that: The connecting steel plate is provided with at least two long strip bolt holes matched with the connecting bolts.

3. The concrete beam with a vibration reduction and adjustment structure according to claim 1 is characterized in that: A pad with a triangular structure is provided at the end of each adjusting screw rod, and the inclined surface of the pad is fitted with the flange plate of the second steel beam.

4. A method for constructing a concrete beam as claimed in claim 1, characterized in that: The following steps are involved: The first step is to cast a concrete beam between two concrete columns, embed a first steel plate on each concrete column and embed a second steel plate on the concrete beam according to the designed position; The second step is to hoist and install the first steel beam, and weld both ends of the first steel beam to the first steel plate respectively; The third step is to hang and install the second steel beam, weld one end of the second steel beam to the second steel plate, and set a gap between the other end of the second steel beam and the first steel beam, so that the second steel beam extends obliquely from the concrete beam to the first steel beam; The fourth step is to weld one end of the connecting steel plate to the first steel beam according to the designed position; then use the adjusting screw to pass through the pad, the second steel beam near the connecting steel plate and the first steel beam in sequence, and then use the adjusting nut to fasten the first steel beam and the second steel beam together, so that the adjusting screw is in a stressed state; finally, use the connecting bolt to fix the connecting steel plate and the second steel beam together, release the adjusting nut, and complete the fixed connection operation of the second steel beam and the first steel beam; Step 5. Repeat steps 3 and 4, weld one end of another second steel beam to the second steel plate, and fix the other end of the second steel beam to the first steel beam by connecting the steel plate and adjusting screw.

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