Conical hoop structure for bridge bent cap construction
By adopting a conical clamp structure in the construction of bridge cap beams and using wedge-shaped steel shims to increase friction, the problem of insufficient clamp friction was solved, thereby improving load-bearing capacity and safety.
Patent Information
- Application Number
- CN202423063015.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-12
AI Technical Summary
In the construction of existing bridge cap beams, the friction of the clamps is insufficient, resulting in insufficient load-bearing capacity and easily causing safety accidents.
A conical clamp structure is designed, which uses wedge-shaped steel shims to increase the friction between the clamp and the bridge pier, and increases the clamping force through wedge force conversion to improve the load-bearing capacity.
When bolts are not tightened enough or loosened due to vibration, the wedge-shaped steel shims convert the wedge force to increase the clamping force of the clamp, improve friction, and enhance structural stability and safety.
Smart Images
Figure CN223824014U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of conical hoop structure for bridge bent cap construction, belong to bridge construction technical field. BACKGROUND
[0002] Column pier is the structural type widely used in bridge design, and bent cap refers to the beam arranged on the top of bent cap pier for supporting, distributing and transferring the load of superstructure. The common methods for bent cap construction mainly include cross-type steel method, pre-embedded steel plate method, full-support method, pre-embedded steel bracket method, hoop method and prefabricated installation method. Among them, the hoop method is to hoop the steel plate on the pier column of the bridge, and to support the bent cap by using the frictional force, which has the characteristics of light structure, simple processing and low cost. According to the different forms of pier section, the bent cap hoop can be divided into round hoop, square hoop and the like. In addition, the bent cap hoop method shows the advantages of simple construction operation, saving support and less labor in the construction of high pier, which proves its applicability and effectiveness in the construction of high pier. Although the bent cap hoop method has many advantages, it is still necessary to ensure that enough friction is generated between the hoop and the pier column in actual application to ensure the stability and safety of the structure.
[0003] The existing hoop mainly locks two steel plates by bolts, and generates frictional force by the screwing force of the bolts and the friction coefficient between the steel plates and the pier column of the bridge to support the upper support, form, bent cap reinforced concrete and other construction loads in the construction process of bent cap. If the load of the upper structure increases, the screwing force of the bolt is insufficient, or the screwing force decreases due to the loosening of the bolt caused by construction vibration, which may cause insufficient bearing capacity of the hoop, deformation of the support and form, and even safety accidents. SUMMARY
[0004] The utility model aims at overcoming the shortcomings of the prior art, providing a kind of conical hoop structure for bridge bent cap construction, when the hoop body generates downward sliding trend, increase the clamping force of hoop, further increase the frictional force between the hoop and the pier column of bridge, improve the bearing capacity of hoop.
[0005] The technical scheme of the utility model one kind for bridge bent cap construction conical hoop structure is: including bridge pier column, bridge pier column is provided with hoop, the hoop is composed of two groups of symmetrical hoop body, the hoop body includes steel plate hoop body, and the steel plate hoop body is matched with the bridge pier column, and the fixed plate is arranged on the two sides of the steel plate hoop body, and the bolt hole is formed in the fixed plate, and the two groups of symmetrical hoop body are fixed by bolt through bolt hole, the inner wall of the steel plate hoop body is conical surface, and the wedge-shaped steel gasket is arranged between the steel plate hoop body and the bridge pier column, the outer wall of the wedge-shaped steel gasket is wedge-shaped, and the outer wall of the wedge-shaped steel gasket is matched with the inner wall of the steel plate hoop body.
[0006] Further, the hoop body outer wall is transversely provided with two or more stiffening ribs.
[0007] Further, the wedge-shaped steel gasket is a two-group symmetrical structure.
[0008] Further, the cross-sectional inner diameter of the steel plate hoop body is equal to the cross-sectional outer diameter of the wedge-shaped steel gasket at the same height cross section.
[0009] The utility model relates to a conical hoop structure for bridge bent cap construction beneficial effect is: when the upper structure load of hoop increases, the bolt screw force is insufficient, or the bolt is loosened and causes the screw force to drop due to construction vibration, causes the hoop body to produce the downward sliding tendency, under the wedge-shaped force conversion of wedge-shaped steel gasket, the clamping force of hoop is increased, and then the friction between the hoop structure and bridge pier column is increased, and the carrying capacity of the hoop structure is improved. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is the front view schematic drawing of a conical hoop structure for bridge bent cap construction of the utility model;
[0011] Figure 2 It is the side view schematic drawing of a conical hoop structure for bridge bent cap construction of the utility model;
[0012] Figure 3 It is the overhead schematic drawing of a conical hoop structure for bridge bent cap construction of the utility model;
[0013] Figure 4 It is the structure schematic drawing of wedge-shaped steel gasket. DETAILED DESCRIPTION
[0014] The utility model relates to a conical hoop structure for bridge bent cap construction, such as Figure 1 — Figure 4 As shown, including bridge pier column 1, is set up hoop on bridge pier column 1, the hoop is composed of two groups of symmetrical hoop body 2, the hoop body 2 includes steel plate hoop body 21, and the steel plate hoop body 21 is cooperated with bridge pier column 1, is set up fixed plate 22 on both sides of steel plate hoop body 21 respectively, sets up bolt hole 23 on fixed plate 22, and two groups of symmetrical hoop body 2 are fixed through bolt 24 through bolt hole 23, the inner wall of steel plate hoop body 21 is conical surface, is set up wedge-shaped steel gasket 3 between steel plate hoop body 21 and bridge pier column 1, and the outer wall of wedge-shaped steel gasket 3 is wedge-shaped, and the outer wall of wedge-shaped steel gasket 3 is cooperated with the inner wall of steel plate hoop body 21.
[0015] Further, the hoop body 2 outer wall transversely sets up more than two stiffening ribs 25. With stiffening rib 25, the rigidity and carrying capacity of the steel plate hoop body 21 overhanging section can be improved.
[0016] Further, the wedge-shaped steel gasket 3 is a two-group symmetrical structure.
[0017] Further, in the same height cross section, the cross section inner diameter of the steel plate hoop body 21 is equal to the cross section outer diameter of the wedge-shaped steel gasket 3.
[0018] The utility model discloses a conical hoop structure for bridge bent cap construction beneficial effect is: when installing, first install wedge-shaped steel gasket 3, the cross section of wedge-shaped steel gasket 3 is wedge-shaped, is rolled into two symmetrical semicircular structure through machinery, and its inner diameter is equal to the outer diameter of bridge pier 1, and the inner arc surface is handled through roughening, scribing etc. Process to increase the friction coefficient with the concrete surface, two symmetrical wedge-shaped steel gaskets 3 are fixed to bridge pier 1, wherein the thinner end of wedge-shaped steel gasket 3 is above, and the thicker end is in lower part, then install hoop body 2, and two symmetrical hoop bodies 2 are fixed to the outer wall of wedge-shaped steel gasket 3, wherein the butt joint of two wedge-shaped steel gaskets 3 is perpendicular to the butt joint of two hoop bodies 2, and the butt joint of two hoop bodies 2 is perpendicular to the direction along bridge, and the inner wall of steel plate hoop body 21 of hoop body 2 is conical surface and wedge-shaped surface of wedge-shaped steel gasket 3 outer wall wedge-shaped surface mutual adhesion, then use bolt 24 to pass through the bolt hole 23 of fixed plate 22, and the locking of two hoop bodies 2 is fixed (the number and diameter of bolt 24 are determined through stress calculation), when the load of hoop upper structure increases, and the screwing force of bolt 24 is insufficient, or the bolt 24 is loosened and causes the screwing force to drop due to construction vibration, causes the downward sliding tendency of hoop body 2, under the wedge-shaped force conversion of wedge-shaped steel gasket 3, make the clamping force of hoop increase, and then increase the friction between hoop structure and bridge pier 1, improve the carrying capacity of hoop structure.
Claims
1. A conical clamp structure for bridge cap beam construction, comprising a bridge pier (1), a clamp being installed on the bridge pier (1), the clamp being composed of two sets of symmetrical clamp bodies (2), each clamp body (2) comprising a steel plate clamp body (21), the steel plate clamp body (21) cooperating with the bridge pier (1), fixing plates (22) being respectively installed on both sides of the steel plate clamp body (21), bolt holes (23) being opened on the fixing plates (22), the two sets of symmetrical clamp bodies (2) being fixed together by bolts (24) passing through the bolt holes (23), characterized in that: The inner wall of the steel plate hoop (21) is conical. A wedge-shaped steel gasket (3) is provided between the steel plate hoop (21) and the bridge pier (1). The outer wall of the wedge-shaped steel gasket (3) is wedge-shaped and matches the inner wall of the steel plate hoop (21).
2. The conical clamp structure for bridge cap beam construction as described in claim 1, characterized in that: The outer wall of the hoop (2) is provided with two or more stiffening ribs (25) in the transverse direction.
3. The conical clamp structure for bridge cap beam construction as described in claim 1, characterized in that: The wedge-shaped steel gasket (3) has two sets of symmetrical structures.
4. The conical clamp structure for bridge cap beam construction as described in claim 1, characterized in that: At the same height cross section, the inner diameter of the cross section of the steel plate hoop (21) is equal to the outer diameter of the cross section of the wedge-shaped steel gasket (3).