CN207619845U - Avoidance Adjustment Structure of Main Reinforcement - Google Patents

Abstract

The utility model discloses an avoiding and adjusting structure of a main reinforcing steel bar, which comprises an avoiding structure arranged on the linear extending axis of the main reinforcing steel bar and an assembling layer which is arranged on the direction vertical to the extending axis and is close to the avoiding structure; the main reinforcing steel bar comprises at least two sections of straight extension sections and bending sections for connecting the adjacent two sections of straight extension sections, and the bending sections penetrate through the assembling layer; the avoidance adjustment structure further includes a reinforcement member disposed around the bend section and embedded in the mounting layer. The utility model discloses a make and avoid structure outlying owner reinforcing bar to adopt specific bending mechanism, realize avoiding the continuous complete laying of near structure owner reinforcing bar, wherein buckle and can go on with less angle to through the reinforcement that sets up around the bending segment, also ensured that the department of buckling owner reinforcing bar has the mechanical strength that meets the requirements, thereby guaranteed the continuity and the integrality of owner reinforcing bar.

Description

Avoidance Adjustment Structure of Main Reinforcement

technical field

The utility model relates to the construction field of cable tower bridge structures, in particular to an avoidance adjustment structure for main steel bars.

Background technique

In recent years, my country's transportation infrastructure construction has developed rapidly, especially the development of high-speed railways represented by passenger dedicated lines and expressways in highway engineering. And more and more. Compared with other bridge structures, the suspension bridge can use less material to span a relatively large distance, and can also be built higher to allow ships to pass underneath. There is no need to establish a temporary pier in the center of the bridge when building the bridge. Therefore, the suspension bridge can Build on deeper or faster currents.

However, an anchor box will be installed on the suspension bridge. The anchor box is a bar-shaped opening of a U-shaped groove, closed at both ends, and is used for anchoring of prestressed steel bars and pouring of anchor concrete. The volume of the anchor box is large. In order to avoid the anchor box, the main reinforcement is usually disconnected at the position of the tower column where the anchor box is installed. For the disconnected main reinforcement, in order to ensure that its mechanical properties will not drop too much, it will use The long and short wires are bundled and overlapped or the steel bars are welded and overlapped. However, no matter what method is mentioned above, the main reinforcement has been broken after all, and its mechanical properties cannot be compared with the continuous main reinforcement in any case. Therefore, it is necessary to take appropriate structures or measures to ensure that the main reinforcement can not be cut off, and the force of the main reinforcement can be ensured. Not significantly affected or weakened.

Utility model content

Based on this, in order to solve the problem of not cutting off the main steel bar and ensuring that the force of the main steel bar is not seriously affected, a main steel bar avoidance adjustment structure is provided.

An avoidance adjustment structure of a main steel bar, used to realize the assembly of the main steel bar when the main steel bar cannot be installed in a straight line, comprising an avoidance structure arranged on the linear extension axis of the main steel bar and an avoidance structure arranged in a direction perpendicular to the extension axis The upper assembly layer close to the avoidance structure; the main reinforcement includes at least two straight-line extensions and a bent section connecting the two adjacent straight-line extensions, and the bend passes through the assembly layer; The avoidance adjustment structure further includes a reinforcing piece arranged around the bent section and embedded in the assembly layer.

In one of the embodiments, the bent section includes several short rib segments that deviate from the straight line extending end to end, the short rib segments are connected at a first preset angle, and the short rib segments The section is connected to the straight extension section at a second preset angle, and the reinforcing piece is provided in the space between the short rib section connected to the straight extension section and the avoidance structure.

Further, the bent section includes at least two oblique short rib sections respectively connected to the straight line extension section and one vertical short rib section connected to the short rib section.

Further, the reinforcing piece is composed of a reinforcing piece with a triangular cross section, one side of the reinforcing piece is connected to the bent section, and the other side is parallel to the straight line extension section.

Further, the other side of the reinforcing piece is flush with the linear extension.

Specifically, the reinforcement is composed of several layers of triangular steel mesh stacked layer by layer, and the third side of the reinforcement is parallel to the side of the avoidance structure.

Specifically, the first preset angle is 130°-170°, and the second preset angle is 130°-180°; the connection point between the short rib section and the straight line extension section and the avoiding structure separated by a predetermined distance.

In one embodiment, the avoidance structure is a cable tower beam anchor box, and the cable tower beam anchor box is half-surrounded by the assembly layer, so that the opening of the cable tower beam anchor box faces to the outside of the assembly layer.

The utility model realizes the continuous and complete layout of the main steel bars near the avoiding structure by using a specific bending mechanism for the main steel bars around the avoiding structure, wherein the bending can be carried out at a small angle, and through the Reinforcing with reinforcing parts also ensures that the main steel bar at the bend has the required mechanical strength, thus not only ensuring the continuity and integrity of the main steel bar, but also making the change of its vertical line shape smaller, reducing the Avoid the adverse effects of structural changes of the main reinforcement near the structure on the axial force transmission of the main reinforcement.

Description of drawings

Fig. 1 is a schematic diagram of the avoidance adjustment structure of the main steel bar in an embodiment of the utility model;

Fig. 2 is a schematic diagram of avoidance adjustment structure of the main reinforcement in another embodiment of the utility model;

Fig. 3 is a flow chart of the avoidance adjustment method for main steel bars in an embodiment of the present invention.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and exemplary embodiments, wherein the same reference numerals in the accompanying drawings all refer to the same components. Also, if a detailed description of known technologies is unnecessary to illustrate the features of the present invention, it will be omitted.

The avoidance adjustment structure of the main steel bar 100 provided by the utility model is used to realize the assembly of the main steel bar 100 when the main steel bar 100 cannot be installed in a straight line. As an important force-bearing part, the volume is relatively large, so the main steel bars 100 are often installed around the structure. The main steel bar 100 avoidance adjustment structure in an embodiment provided by the utility model, as shown in Figure 1, includes an avoidance structure 200 arranged on the linear extension axis of the main steel bar 100 and an approach avoidance structure arranged in a direction perpendicular to the extension axis. The assembly layer 300 of the structure 200 avoids the structure 200 such as the anchor box of the cable tower beam. The anchor box of the cable tower beam is half surrounded by the assembly layer 300, so that its opening faces the outside of the assembly layer 300. The assembly layer 300 is usually a concrete structure, including concrete The skeleton and the concrete layer outside the skeleton. The main steel bar 100 is a continuous steel bar without breakpoints or connecting structures in the middle. In order to describe its positional relationship with the avoidance structure 200, the main steel bar 100 is divided into at least two straight-line extensions 110 and two adjacent sections. The bending section 120 of the straight line extension section 110, the avoidance structure 200 is arranged near the bending section 120, that is, the main steel bar 100 bypasses the avoiding structure 200 (cable tower beam anchor box) through the bending section 120 from the original linear bending. In order to securely install the main steel bars 100 in the assembly layer 300 , the bent section 120 passes through the assembly layer 300 . In addition, the avoidance adjustment structure also includes a reinforcing piece 400 arranged around the bending section 120 and embedded in the assembly layer 300 , the setting of the reinforcing piece 400 can effectively compensate for the strength loss of the main steel bar 100 in the bending section 120 in the straight direction. , and the strength of the concrete structure at the location where the reinforcing member 400 is set is greater, and the force applied on the main reinforcement can be distributed to the concrete structure, so as to avoid stress concentration on the bending section 120 of the main reinforcement.

As a preferred solution, as shown in FIG. 2 , the bent section 120 includes several short rib sections that deviate from the straight line extension section 110 and end-to-end. The short rib sections actually include two types. The short rib section connected end to end, the other is a short rib section connected at one end to the linear extension section 110, wherein the short rib sections are connected at a first preset angle α, and the second type, that is, the short rib section and The straight line extensions 110 are connected at a second predetermined angle β, and the first predetermined angle α and the second predetermined angle β may be equal or unequal. Preferably, the bent section 120 includes at least two oblique short rib sections 121 respectively connected to the straight extension section 110 and a vertical short rib section 122 connecting the short rib sections, in order to minimize the bending of the main steel bar 100, It is also necessary to ensure that the main steel bar 100 bypasses the avoidance structure 200 well, so that the bent section 120 is formed into a trapezoidal structure, that is, there are oblique short rib sections 121 at both ends and a vertical short rib section. Of course, in order to eliminate the stress concentration at the bend, it is best to set the bend as an arc. Preferably, the first preset angle α is 130°-170°, the second preset angle β is 130°-180°, and the connection point between the short rib section and the straight line extension section 110 is separated from the avoidance structure 200 by a predetermined distance , so as to form a large-angle bend, so that the bent portion is closer to a straight line, and the predetermined distance is preferably greater than the distance between the bent short rib section and the avoidance structure 200 . In fact, the included angle between two adjacent short ribs is not necessarily required to be equal. When there are many short ribs connected head to tail, the first preset angle α will also have different values. For example, the first short rib The angle between the rib section and the second short rib section is 140°, the angle between the second short rib section and the third short rib section is 145°, and so on. Furthermore, the reinforcing piece 400 mentioned above is arranged in the space between the short rib section connected to the linear extension section 110 and the avoiding structure 200, if the reinforcing piece is arranged on the upper and lower sides of the avoiding structure, it can The reinforcements on the upper and lower sides adopt the same structure to facilitate manufacture and installation. Of course, they can also be set as asymmetrical structures according to actual mechanical requirements. The reinforcing piece 400 can adopt various forms and shapes, such as fiber, steel bar, etc., and the cross-sectional shape is such as circular, square or triangular, etc., because the reinforcing piece 400 is arranged in the space between the short rib section and the avoidance structure 200 , an included angle is formed between the short rib section and the avoidance structure 200, so the reinforcing member 400 is preferably a reinforcing member with a triangular cross section, and the triangular reinforcing member 400 must have three sides, in order to realize the reinforcing member 400 pair The structural reinforcement of the main steel bar 100 must make one of the sides connected to the bending section 120 on the main steel bar 100, while the other two sides may not be connected to structures other than the assembly layer 300, but in order to make the reinforcement 400 has a more stress spreading effect, and can make the other side parallel to the straight extension 110 . Further preferably, the other side of the reinforcing piece 400 is flush with the linear extension 110, so as to achieve a better effect of the reinforcing piece 400 on the structural reinforcement of the main steel bar 100, and because of the above-mentioned position reference, it is also convenient to reinforce The installation of strong piece 400. For the form of reinforcement 400, the method of stacking steel mesh can be adopted, that is, several layers of triangular steel mesh are stacked layer by layer. The steel mesh is two-dimensional. Steel, and the two layers of steel mesh can also be reinforced by connecting reinforcement with a ribbed vertical bar with a diameter of 16mm. The reinforcing piece 400 with a triangular cross-section must have a third side. In order to securely place the reinforcing piece 400 in the corner space formed by the short rib section and the avoiding structure 200, the reinforcements from the main reinforcement 100 and the avoiding structure 200 are distributed. Stress, it is preferable to make the third side of the reinforcing member 400 parallel to the side of the avoidance structure 200 .

It should be noted that, since the avoiding structure 200 has a variety of shapes in the actual application process, it may be a symmetrical structure or an asymmetrical structure. What is shown in FIG. 1 is an example of a symmetrical structure. The main reinforcement 100 of the avoidance structure 200 may also be a symmetrical structure or an asymmetric structure as a whole. For example, when considering that the force under the avoidance structure 200 is greater, an asymmetric structure is adopted so that the main reinforcement 100 below the avoidance structure 200 The bending point is further away from the avoidance structure 200 , that is, the first inclination angle is larger, making it closer to a straight line, and minimizing the influence of bending on the mechanical properties of the main steel bar 100 .

The utility model also provides a corresponding avoidance adjustment method of the main steel bar 100, which is used to form the above-mentioned avoidance adjustment structure of the main steel bar 100, as shown in Figure 3, including the following steps:

Step S10: Preset the extension route of the main reinforcement 100 at the assembly layer 300 corresponding to the avoidance structure 200 . Preferably, according to the actual function and structural characteristics of the avoiding structure 200, the avoiding structure 200 is completely or partially surrounded by the assembly layer 300. As a preferred solution, the avoidance adjustment method of the above-mentioned main steel bar 100 is especially suitable for the assembly of the main steel bar 100 at the anchor box of the cable tower beam. When the avoidance structure 200 is the anchor box of the cable tower beam, the assembly layer 300 is the concrete structure. The layer surrounds most of the anchor box of the tower cross beam, and makes the opening of the anchor box of the tower cross beam face the outside of the concrete structure, and the main steel bar 100 bypasses the outline of the anchor box of the tower cross beam in the concrete structure. Specifically, the extension route in step S10 includes at least straight lines at two ends and bent lines connecting adjacent straight lines at both ends, so as to achieve the above-mentioned purpose that the main steel bar 100 bypasses the anchor box of the pylon beam.

Step S20: Bending the main steel bar 100 to be installed according to the direction of the set extension route. Preferably, for the bent line, it includes at least several short bent lines that deviate from the straight line end-to-end. It should be emphasized again that the main steel bar 100 is a continuous and complete steel bar without breakpoints or joints. The zigzag lines are connected at a first preset angle α, and the short zigzag lines are connected with a straight line at a second preset angle β. It is further preferred that the bent line includes at least two sections of oblique short line connected to the straight line and a section of vertical short line connected with the oblique short line, so as to use the least number of bends to realize avoidance. The avoidance of the structure 200 avoids too much damage to the force bearing capacity of the main steel bars 100 .

Step S30: Assemble the bent main steel bar 100 to the assembly layer 300 . The assembly layer 300 here may be only a steel structure in a concrete structure, and no concrete has been poured yet.

Step S40 : Embedding the reinforcing piece 400 around the bent portion of the main steel bar 100 . The reinforcing member 400 is provided in a space between the short folded line connected to the straight line and the avoidance structure 200 .

Although some exemplary embodiments of the present invention have been shown above, those skilled in the art will appreciate that changes can be made to these exemplary embodiments without departing from the principle or spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (8)

1. the avoidance of main reinforcement a kind of adjusts structure, for can not straight line main reinforcement is installed in the case of realize the main reinforcement Assembly, which is characterized in that including the avoidance structure that is arranged on main reinforcement linear extension axis and be placed perpendicular to described Extend the assembly layer close to the avoidance structure on axis direction；The main reinforcement includes at least two sections of linear extensions and company The bending segment of adjoining close two sections of linear extensions, the bending segment pass through the assembly layer；The avoidance adjusts structure It further include the reinforcing member for being arranged around the bending segment and being embedded in the assembly layer.

2. the avoidance of main reinforcement according to claim 1 adjusts structure, which is characterized in that the bending segment includes several sections Deviate the end to end short muscle section of the linear extension, is attached with the first predetermined angle between the short muscle section, institute It states short muscle section to be attached with the second predetermined angle with the linear extension, be connected to described short on the linear extension It is equipped with the reinforcing member in muscle section and the space avoided between structure.

3. the avoidance of main reinforcement according to claim 2 adjusts structure, which is characterized in that the bending segment, which includes at least, to be divided The vertical short muscle section of two sections of oblique short muscle sections not connect with the linear extension and one section of connection short muscle section.

4. the avoidance of main reinforcement according to claim 2 adjusts structure, which is characterized in that the reinforcing member is by cross section The reinforcing member of triangle is constituted, and the reinforcing member one side is connect with the bending segment, another side and the linear extension It is parallel.

5. the avoidance of main reinforcement according to claim 2 adjusts structure, which is characterized in that the another side of the reinforcing member It is concordant with the linear extension.

6. the avoidance of main reinforcement according to claim 4 or 5 adjusts structure, which is characterized in that the reinforcing member is by several Layer triangular reinforced bar net successively stacks composition, and the third side of the reinforcing member is parallel with the avoidance side of structure.

7. the avoidance of main reinforcement according to claim 2 adjusts structure, which is characterized in that first predetermined angle is 130 °~170 °, second predetermined angle is 130 °~180 °；The tie point of the short muscle section and the linear extension with The avoidance spacing structure preset distance.

8. the avoidance of main reinforcement according to claim 1 adjusts structure, which is characterized in that the avoidance structure is that Sarasota is horizontal Beam anchor box, the Sarasota crossbeam anchor box make the opening of the Sarasota crossbeam anchor box towards the dress by the assembly layer semi-surrounding With on the outside of layer.