External temporary consolidation device for continuous beam pier body

Abstract

A continuous beam pier external temporary consolidation device comprises a beam body, a permanent support, a pier and a foundation, the middle of the bottom face of the beam body is connected with the permanent support, the permanent support is connected with the top of the pier, and the bottom of the pier is located on the foundation; the temporary consolidation device outside the continuous beam pier body further comprises a tilt angle sensor, channel steel and a temporary pier, the periphery of the bottom face of the beam body is connected with the top of the temporary pier, the bottom of the temporary pier is located on the foundation, and the tilt angle sensor is fixed to the top of the temporary pier. The temporary piers are connected through channel steel, and the adjacent temporary piers are connected through channel steel. According to the utility model, through the novel channel steel connection mode and the installation of the tilt angle sensor, the stability and the safety are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of external temporary consolidation of bridge piers. Specifically, the technical field of external temporary consolidation devices for continuous beam piers mainly involves temporary support and fixing technology in bridge construction, and is suitable for cantilevered beams with various radius curves. Background Art

[0002] With the development of science, technology, and economy in my country, the spans of bridges are continuously increasing. When bridges span deep trenches or canyons, where ground-based scaffolding is inconvenient, cantilevered basket construction techniques are primarily used. This cantilevered casting technique reduces the impact on the surrounding environment, reduces dependence on topography, and improves overall construction quality and stability. However, highway bridges crossing existing bridges present significant construction challenges, placing high demands on cantilevered basket casting. Therefore, research on cantilevered basket casting techniques near existing bridges is of great practical significance.

[0003] The eccentric moment of small radius curved continuous beams in bridge projects is large, and the safety risk is high during construction. It is very easy to overturn and torque in the longitudinal and transverse directions. The temporary consolidation of continuous beam piers is a key node in cantilever casting construction. Its main purpose is to overcome the unbalanced load of cantilever casting in the longitudinal direction of the bridge during construction. Based on this, when cantilever casting the beam body, it is necessary to temporarily consolidate the pier top beam section and the bridge pier, and adopt temporary consolidation measures to balance the eccentric moment problem during construction. At the same time, strengthen construction monitoring to ensure the smooth closure of cantilever casting. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the utility model provides a temporary external consolidation device for bridge piers that can be easily disassembled and used for monitoring the construction of continuous beams. Through the new channel steel connection method and the installation of inclination sensors, the stability and safety are greatly improved.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A temporary external consolidation device for continuous beam piers includes a beam body, a permanent support, a pier and a foundation. The middle portion of the bottom surface of the beam body is connected to the permanent support, the permanent support is connected to the top of the pier, and the bottom of the pier is located on the foundation. The temporary external consolidation device for continuous beam piers also includes an inclination sensor, channel steel and temporary piers. The bottom surface of the beam body is connected to the top of the temporary pier on all sides, the bottom of the temporary pier is located on the foundation, the inclination sensor is fixed on the top of the temporary pier, and the temporary piers and adjacent temporary piers are connected by channel steel.

[0007] Furthermore, the external temporary consolidation device for the continuous beam pier also includes a preset steel plate, one end of which is embedded in the temporary bridge pier, and the other end of which is connected to the channel steel with connecting bolts.

[0008] Preferably, the temporary pier has four.

[0009] The utility model has the advantages that:

[0010] (1) The base groove of the device adopts a triangular structure, improving structural stability. The consolidation method of the temporary pier of the device is the base groove fixing method, which has low construction difficulty and high structural stability. Meanwhile, the channel steel is used to connect the temporary pier and the pier to form a stable multi-edge triangular structure, and the bolt outer connection and channel steel welding are combined, which improves the connection strength and simplifies the construction. The channel steel has large cross-sectional size and is in a channel type, has good rigidity, can maintain good rigidity when bearing external force, and has long service life, is convenient to disassemble, and can be repeatedly used, thereby reducing the use engineering cost.

[0011] (2) The device has real-time monitoring function, improving safety during construction. The suspension pouring construction monitoring is an important link to ensure the quality and safety of bridge construction. In the suspension pouring continuous box girder construction process, the concrete self-weight of the bridge widening section and the two end suspension pouring sections may have a difference, thereby causing the generation of unbalanced bending moment. The device mainly arranges the inclination sensor at the junction of the beam body and the temporary pier, installs the hanging basket for cantilever pouring construction after the start beam body is completed, and in the circulation construction and closure construction process, the load of the hanging basket and materials and equipment thereon may be unevenly distributed, which may also cause the imbalance of the stress bending moment of the continuous box girder. The inclination sensor measures data in real time, analyzes the data, has the alarm function, can timely find problems and abnormal conditions, and sets the temporary support system, performs unbalanced counterweight and takes corresponding correction and adjustment measures.

[0012] (3) The device also has the advantages of simple operation and rapid construction. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model.

[0014] Figure 2 It is a temporary pier elevation schematic view in the utility model Figure 1 .

[0015] Figure 3 It is a temporary pier layout plane schematic view in the utility model Figure 1 .

[0016] Figure 4 It is an exploded schematic view in the utility model Figure 1 .

[0017] The reference signs are as follows: 1 is a beam body, 2 is a permanent support, 3 is an inclination sensor, 4 is a channel steel, 5 is a temporary pier, 6 is a pier, 7 is a foundation, 8 is a connecting bolt, and 9 is a preset steel plate. DETAILED DESCRIPTION

[0018] The utility model will be further described below with reference to the drawings.

[0019] Referring to Figures 1-4 A continuous beam pier body outer temporary consolidation device, including beam body 1, permanent support 2, inclination sensor 3, channel steel 4, temporary pier 5, pier 6, foundation 7 and preset steel plate 9,

[0020] The beam body 1 is connected with the permanent support 2, which ensures the stability and carrying capacity of the bridge.

[0021] The permanent support 2 is connected with the beam body 1 and the pier 6, which ensures the stable connection and load transfer between the superstructure and the substructure of the bridge.

[0022] The inclination sensor 3 is four in total, is fixed on the top of the temporary pier 5 respectively, can measure the inclination angle of the bridge structure in real time accurately, provides important data support for the safety and stability of the bridge.

[0023] The channel steel 4 is used for the connection between adjacent temporary piers 5 and the connection between the temporary pier and the pier, and the connection mode forms a stable triangle, which strengthens the stability of the temporary consolidation.

[0024] The temporary pier 5 is four in total, is connected with the beam body 1 at the top and is connected with the foundation 7 at the bottom, which ensures the construction safety and provides necessary support.

[0025] The pier 6 is connected with the permanent support 2 at one end and is connected with the foundation 7 at the other end, which ensures the stability and safety of the bridge.

[0026] The top of the foundation 7 is connected with the temporary pier 5 and the pier 6, and the upper load is transmitted to the foundation.

[0027] The connecting bolt 8 is fixedly connected with the channel steel 4 and the preset steel plate 9.

[0028] The preset steel plate 9 is embedded in the temporary pier 5 at one end and is connected with the channel steel 4 by the connecting bolt 8 at the other end.

[0029] The implementation process of the embodiment is as follows:

[0030] Step 1. After the site construction personnel clean the surface of the foundation 7, carry out the reinforcement construction, install the formwork, complete the pouring of the pier 6 concrete, after the pier 6 is demoulded and reaches the acceptance condition, pour the permanent support 2.

[0031] Step 2. After the permanent support 2 is cured, temporary piers 5 are cast around the piers 6 using the foundation trench fixing method. The casting height is flush with the permanent support 2, and pre-set steel plates 9 are cast in the temporary piers 5 to connect the channel steel 4 to improve stability.

[0032] Step 3. The four temporary piers 5 are connected to the piers 6 with channel steels 4. The four temporary piers 5 are connected in pairs with channel steels 4 and externally connected with connecting bolts 8. Each temporary pier 5 is connected to the pier 6 from two directions. External connection is used on the temporary pier 5, and welding is used at the junction of the two channel steels 4 on the pier 6.

[0033] Step 4. After the channel steel 4 is installed, the full-floor support is built, and then the formwork of the beam body 1 is installed, the steel bars are tied and the prestressed pipes are installed, as well as the pouring and curing are carried out.

[0034] Step 5. After completing the prestressing of the beam body 1, remove the upper support and install the inclination sensor 3 at the junction of the beam body 1 and the temporary pier 5 to monitor the bending deflection deformation generated during suspended pouring.

[0035] Step 6. Install the hanging basket and carry out the construction of the suspended pouring section. Always pay attention to the reading of the inclination sensor 3 to prevent large displacement to ensure the safe progress of the construction.

[0036] Step 7. The final closure is carried out by first closing the side span and then the middle span. After the pier 6 reaches the supporting strength, a bracket is set up for dismantling. First, the channel steel 4 between the temporary pier 5 and the pier 6 is removed, and then the inclination sensor 3 and the temporary pier 5 are removed.

[0037] The embodiments of this specification are merely examples of implementations of the utility model and are provided for illustrative purposes only. The scope of protection of this utility model should not be considered limited to the specific forms described in these embodiments. The scope of protection of this utility model also extends to equivalent technical means that can be conceived by ordinary technicians in this field based on the concept of this utility model.

Claims

1. A temporary external consolidation device for a continuous beam pier, comprising a beam body, a permanent support, a pier, and a foundation, wherein the middle portion of the bottom surface of the beam body is connected to the permanent support, the permanent support is connected to the top of the pier, and the bottom of the pier is located on the foundation; characterized in that: The external temporary consolidation device for the continuous beam pier also includes an inclination sensor, channel steel and temporary bridge piers. The bottom surface of the beam body is connected to the top of the temporary bridge pier on all sides. The bottom of the temporary bridge pier is located on the foundation. The inclination sensor is fixed on the top of the temporary bridge pier. The temporary bridge piers and adjacent temporary bridge piers are connected by channel steel.

2. The external temporary consolidation device for continuous beam piers according to claim 1, characterized in that: The external temporary consolidation device for the continuous beam pier further includes a pre-installed steel plate, one end of which is embedded in the temporary pier, and the other end of which is connected to the channel steel by connecting bolts.

3. The external temporary consolidation device for continuous beam piers according to claim 1 or 2, characterized in that: There are four temporary bridge piers in total.

Images