Support-free construction hoop structure for cylindrical single-column pier

Abstract

The utility model discloses a support-free construction hoop structure for a cylindrical single-column pier. The support-free construction hoop structure comprises a first hoop bracket assembly, a second hoop bracket assembly, an unloading block and a first opposite-pull rod. The first hoop bracket assembly and the second hoop bracket assembly are arranged on the cylindrical single-column pier in a vertically hooped mode and protrude out of the surface of the cylindrical single-column pier to form cattle leg parts. The unloading block is arranged on the cattle leg part and is used for supporting the bearing beam and carrying out elevation fine adjustment and unloading on the cover beam bracket; the first pair of pull rods are arranged on the cattle leg parts and used for being connected with a bearing beam to prevent overturning. According to the bent cap support, the structural arrangement of the three hoops is adopted, the two main hoops are used for bearing loads, the loads are further dispersed and balanced through the auxiliary hoops located below the main hoops, and the problems of deformation and the like of the bent cap support are solved; the construction method is particularly suitable for support-free construction of a cylindrical single-column pier capping beam, can effectively save materials and reduce cost, and is beneficial to simplifying construction steps and shortening the project construction period.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge pier column construction, in particular to a hoop structure for scaffold-free construction of a cylindrical single-column bridge pier. Background Art

[0002] In the construction process of bridge engineering, many pier columns and capping beams need to be built as supports for the road surface foundation. At present, pier columns and capping beams are generally made of reinforced concrete structures, and the method of building a support structure is often used to assist in pouring. After the pier column is poured, a support for the capping beam is built to carry out the modeling and pouring of the capping beam. This process method is relatively mature and is widely used in the current bridge engineering construction, forming a relatively perfect construction process flow. However, the support construction process of pier columns and capping beams also has some inherent deficiencies of its own. For example, the support structure is complex, built from the ground upwards, with a lot of consumables, many process steps, a long construction period, low efficiency, and relatively high construction costs. For common single-column pier capping beams, there is also the construction of bracket trays, but steel components need to be embedded in the pier columns, and the bracket tray structure is complex and troublesome to process. In addition, there are also restrictions on the ground geological conditions, and the support structure of the capping beam cannot be built or directly built under some specific geological conditions. With the development of engineering technology, methods and processes for scaffold-free construction and pouring of pier column cantilever capping beams have also emerged, and have certain advantages in terms of construction efficiency and economy. The hoop method construction is one of the methods for scaffold-free construction of pier column capping beams at present, mainly relying on the hoop structure to replace the support structure for the cantilever construction of pier column capping beams. Therefore, the design of the hoop structure is the key to the hoop method construction. The hoop structures in the prior art have not been well applied to cylindrical single-column bridge piers to assist in the construction of cantilever capping beams. Therefore, it is necessary to improve and optimize the structure of the hoop structure so that it can be applied to cylindrical single-column bridge piers to assist in the construction of cantilever capping beams. Summary of the Invention

[0003] The utility model aims at the above problems and provides a hoop structure for scaffold-free construction of a cylindrical single-column bridge pier. The technical solution of the utility model is as follows:

[0004] A hoop structure for scaffold-free construction of a cylindrical single-column bridge pier includes a first hoop bracket assembly, a second hoop bracket assembly, a load unloading block, and a first pair of tie rods; the first hoop bracket assembly and the second hoop bracket assembly are tightly fastened up and down on the cylindrical single-column bridge pier and respectively protrude from the surface of the cylindrical single-column bridge pier to form bracket legs; the load unloading block is arranged on the bracket legs for supporting the bearing beam, finely adjusting the elevation of the capping beam support and unloading the load; the first pair of tie rods is arranged on the bracket legs for connecting with the bearing beam to prevent overturning.

[0005] As a further description of the utility model, a secondary hoop assembly is further arranged below the second hoop bracket assembly for dispersing and balancing the load.

[0006] Furthermore, the bracket legs of the first hoop bracket assembly and the second hoop bracket assembly are arranged at an angle to each other.

[0007] Furthermore, a sand box is provided on the bracket leg of the second hoop bracket assembly, and the sand box is located between the unloading block and the bracket leg.

[0008] Furthermore, the first hoop bracket assembly and the second hoop bracket assembly respectively include two groups of panels, stiffening plates, flange plates and connecting bolts; the panels are in a semi-cylindrical shape for contacting the surface of the cylindrical single-column pier, the stiffening plates are vertically connected to both sides of the panel, the stiffening plates are horizontally connected to both sides of the panel, and the connecting bolts are connected and fixed through the bolt holes on the flange plates.

[0009] Furthermore, the stiffening plates include large triangular stiffening plates and small triangular stiffening plates. The large triangular stiffening plates are arranged on the upper side of the bracket leg and are provided with tension holes for installing the first tie rods, and the small triangular stiffening plates are arranged on the lower side of the large triangular stiffening plates.

[0010] Furthermore, the connecting bolts are high-strength bolts, and a number of groups of bolt holes are provided on the flange plates. The first hoop bracket assembly and the second hoop bracket assembly are respectively fastened to the cylindrical single-column pier through the high-strength bolts.

[0011] Furthermore, a second pair of tie rods is arranged between the bearing beams to prevent deviation.

[0012] Furthermore, the bearing beams are double-rolled steel sections, and the first pair of tie rods and the second pair of tie rods are precision-rolled threaded steel bars.

[0013] Advantages of the present utility model:

[0014] The present utility model adopts a structure with three hoops. Two main hoops are used to bear the load, and the auxiliary hoop located below the main hoops further disperses and balances the load to prevent problems such as deformation of the cap beam support; double-rolled steel sections are used as the bearing beams, and precision-rolled threaded steel tie rods are used between the bearing beams to prevent deviation, and precision-rolled threaded steel tie rods are also used between the bearing beams and the hoops to prevent overturning, avoiding the overturning problem caused by too small a distance between the fulcrums; unloading blocks are placed below the bearing beams, and the unloading blocks are used for fine adjustment of the elevation of the cap beam support and unloading during the removal of the support; a sand box is placed below the unloading block to act as a heightening block to provide unloading support; the hoop structure of the present utility model is particularly suitable for the scaffold-free construction of the cap beam of a cylindrical single-column pier, which can effectively save materials and reduce costs, and is beneficial to simplifying the construction steps and shortening the project duration. Description of the Drawings

[0015] Figure 1 Front view schematic diagram of the bracket-free construction hoop structure for cylindrical single-column piers in the embodiment of the present utility model;

[0016] Figure 2 Side view schematic diagram of the bracket-free construction hoop structure for cylindrical single-column piers in the embodiment of the present utility model;

[0017] Figure 3 Top view schematic diagram of the bracket-free construction hoop structure for cylindrical single-column piers in the embodiment of the present utility model;

[0018] Figure 4 Schematic diagram of the main hoop structure in the embodiment of the present utility model Figure 1 ;

[0019] Figure 5 Schematic diagram of the main hoop structure in the embodiment of the present utility model Figure 2 ;

[0020] Figure 6 Schematic diagram of the auxiliary hoop structure in the embodiment of the present utility model Figure 1 ;

[0021] Figure 7 Schematic diagram of the auxiliary hoop structure in the embodiment of the present utility model Figure 2 ;

[0022] Figure 8 Planar structure schematic diagram of the hoop structure in the embodiment of the present utility model.

[0023] Reference numerals: First hoop corbel assembly 1, Second hoop corbel assembly 2, Unloading block 3, First pair of tie rods 4, Cylindrical single-column pier 5, Corbel part 6, Load-bearing beam 7, Capping beam bracket 8, Sand box 9, Auxiliary hoop assembly 10, Panel 11, Stiffening plate 12, Large triangular stiffening plate 121, Small triangular stiffening plate 122, Flange plate 13, Connecting bolt 14, Second pair of tie rods 15. Detailed implementation manners

[0024] Embodiment:

[0025] The following will describe in detail the embodiments of the present utility model with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] As shown in the appendix Figure 1-8 A cylindrical single-column pier bracket-free construction hoop structure of this embodiment includes a first hoop bracket assembly 1, a second hoop bracket assembly 2, a load unloading block 3, and a first pair of tie rods 4. The first hoop bracket assembly 1 and the second hoop bracket assembly 2 are tightly fastened up and down on the cylindrical single-column pier 5 and respectively protrude from the surface of the cylindrical single-column pier 5 to form bracket legs 6. The load unloading block 3 is arranged on the bracket legs 6 to support the bearing beam 7, finely adjust the elevation of the bent cap bracket 8, and unload the load. The first pair of tie rods 4 is arranged on the bracket legs 6 and is used to connect with the bearing beam 7 to prevent overturning. The hoop structure of this embodiment adopts a three-hoop structure. Among them, two main hoops are used to bear the load, and the auxiliary hoop located below the main hoops further disperses and balances the load to prevent problems such as deformation of the bent cap bracket 8. The double-rolled steel is used as the bearing beam 7, and the fine-threaded steel tie rods are used between the bearing beams 7 to prevent deviation. The fine-threaded steel tie rods are also used between the bearing beam 7 and the hoop to prevent overturning, avoiding the overturning problem caused by too small a distance between the fulcrums. The load unloading block 3 is placed below the bearing beam 7, and the load unloading block 3 is used to finely adjust the elevation of the bent cap bracket 8 and unload the load when the bracket is removed. A sand box 9 is placed below the load unloading block 3 to act as a heightening block to provide load unloading support. The hoop structure of the present utility model is particularly suitable for the bracket-free construction of the bent cap of a cylindrical single-column pier, which can effectively save materials and reduce costs, and is beneficial to simplifying the construction steps and shortening the project duration.

[0028] As described above, preventing the occurrence of overturning problems is a key issue that should be considered in the practical application of the cylindrical single-column pier bracket-free construction hoop structure of this embodiment. The fundamental cause of overturning is the imbalance of the load. Therefore, it should be given key consideration in practical applications. During the actual pouring process of the single-pier column bent cap, it is easy to generate an unbalanced load on the hoop structure of this embodiment, which is prone to overturning problems. Therefore, before the actual application of the hoop structure of this embodiment, it is necessary to check and calculate the working conditions of specific engineering projects in combination with key parameters such as the position of the bearing structure fulcrum, the bearing capacity of each fine-rolled steel, and the frictional resistance between the hoop and the single-pier column. Only when the relevant parameter calculations meet the requirements can the hoop structure of this embodiment be used for the bracket-free construction of the single-pier column bent cap in the corresponding engineering project.

[0029] Specifically, as described above, in this embodiment, an auxiliary hoop assembly 10 is further arranged below the second hoop bracket assembly 2. The two main hoops of this embodiment are fixed on the upper part of the pier column to bear the load of the main support bearing platform, while the auxiliary hoop assembly 10 arranged below the main hoops is used to disperse and balance the load, so that the entire hoop structure can play a better support and bearing effect, ensuring the safety of the cylindrical single-column pier bracket-free construction.

[0030] Specifically, in this embodiment, the bracket legs 6 of the first hoop bracket assembly 1 and the second hoop bracket assembly 2 are arranged at an angle to each other. In this way, as shown in the attached Figure 3 figure, by providing support and fixation for the bent cap support 8 at multiple points, the deviation or overturning of the bent cap support 8 is prevented.

[0031] Specifically, in this embodiment, a sand box 9 is further arranged on the bracket leg 6 of the second hoop bracket assembly 2, and the sand box 9 is located between the unloading block 3 and the bracket leg 6. As described above, since the two main hoops are arranged vertically at an angle, in order to ensure that the support bases are basically on the same plane, the sand box 9 is specifically arranged to play a role in heightening, providing a support base for the unloading block 3, so that the unloading block 3 is basically on the same horizontal plane, facilitating the fine adjustment operation of the elevation of the bent cap support 8.

[0032] Specifically, as shown in the attached Figures 4-8 figure, in this embodiment, the first hoop bracket assembly 1 and the second hoop bracket assembly 2 respectively include two groups of panels 11, stiffening plates 12, flange plates 13 and connecting bolts 14; the panels 11 are in a semi-cylindrical shape for contacting the surface of the cylindrical single-column pier 5, the stiffening plates 12 are vertically connected to both sides of the panels 11, the stiffening plates 12 are horizontally connected to both sides of the panels 11, and the connecting bolts 14 are connected and fixed through the bolt holes on the flange plates 13.

[0033] Specifically, in this embodiment, the stiffening plate 12 includes a large triangular stiffening plate 121 and a small triangular stiffening plate 122. The large triangular stiffening plate 121 is arranged on the upper side of the bracket leg 6 and is provided with a tension hole for installing the first tie rod 4. The small triangular stiffening plate 122 is arranged on the lower side of the large triangular stiffening plate 121. Both the large triangular stiffening plate 121 and the small triangular stiffening plate 122 play an effect of improving the structural strength. Among them, the large triangular stiffening plate 121 arranged on the upper side is also used for supporting and fixing the unloading block 3 or the sand box 9, and for opening holes to install the first tie rod 4.

[0034] Specifically, in this embodiment, the connecting bolt 14 is a high-strength bolt. A number of groups of bolt holes are arranged on the flange plate 13. The first hoop bracket assembly 1 and the second hoop bracket assembly 2 are respectively fastened on the cylindrical single-column pier 5 through the high-strength bolts to ensure the fastening and fixing effect of the hoop.

[0035] Specifically, in this embodiment, a second tie rod 15 is arranged between the bearing beams 7. As shown in the attached drawing, the second tie rod 15 connects two bearing beams 7 and provides a horizontal tensile force to prevent deviation.

[0036] Specifically, in this embodiment, the load-bearing beam 7 is a double-rolled section steel to ensure the structural strength and meet the requirements of support and load-bearing; the first pair of tie rods 4 and the second pair of tie rods 15 are precision rolled threaded steel to achieve connection and fixation and ensure the connection stability of the overall structure.

[0037] The above is only an illustration of the preferred embodiments of the present invention, but it should not be construed as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to change. In short, all changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A bracketless construction hoop structure for a cylindrical single-column pier, characterized in that: It includes a first hoop bracket corbel assembly, a second hoop bracket corbel assembly, a load unloading block and a first pair of tie rods; the first hoop bracket corbel assembly and the second hoop bracket corbel assembly are tightly clamped in an up-and-down position on a cylindrical single-column pier and respectively protrude from the surface of the cylindrical single-column pier to form corbel parts; the load unloading block is arranged on the corbel parts for supporting the bearing beam, finely adjusting the elevation of the bent cap support and unloading the load; the first pair of tie rods is arranged on the corbel parts for connecting with the bearing beam to prevent overturning.

2. The construction hoop structure without support for cylindrical single-column piers according to claim 1, characterized in that: A secondary hoop assembly is also arranged below the second hoop bracket corbel assembly for dispersing and balancing the load.

3. The cylindrical single-column pier bracket-free construction hoop structure according to claim 1 or 2, characterized in that: The corbel parts of the first hoop bracket corbel assembly and the second hoop bracket corbel assembly are arranged at an angle to each other.

4. The construction hoop structure without support for cylindrical single-column piers according to claim 3, characterized in that: A sand box is also arranged on the corbel part of the second hoop bracket corbel assembly, and the sand box is located between the load unloading block and the corbel part.

5. The construction hoop structure for cylindrical single-column piers without scaffolds according to claim 3, characterized in that: The first hoop bracket corbel assembly and the second hoop bracket corbel assembly respectively include two groups of panels, stiffening plates, flange plates and connecting bolts; the panels are in a semi-cylindrical shape for contacting the surface of the cylindrical single-column pier, the stiffening plates are vertically connected to both sides of the panels, the stiffening plates are horizontally connected to both sides of the panels, and the connecting bolts are connected and fixed through the bolt holes on the flange plates.

6. The construction hoop structure for a cylindrical single-column pier without a support according to claim 5, characterized in that: The stiffening plates include large triangular stiffening plates and small triangular stiffening plates. The large triangular stiffening plates are arranged on the upper side of the corbel part and are provided with tension holes for installing the first pair of tie rods, and the small triangular stiffening plates are arranged on the lower side of the large triangular stiffening plates.

7. The hoop structure for construction without scaffold for cylindrical single-column bridge piers according to claim 5, characterized in that: The connecting bolts are high-strength bolts, and a number of groups of bolt holes are arranged on the flange plates. The first hoop bracket corbel assembly and the second hoop bracket corbel assembly are respectively tightly clamped on the cylindrical single-column pier through the high-strength bolts.

8. The construction hoop structure without support for cylindrical single-column piers according to claim 3, characterized in that: A second pair of tie rods is arranged between the bearing beams for preventing deviation.

9. The construction hoop structure without support for cylindrical single-column piers according to claim 8, characterized in that: The bearing beam is a double-rolled steel section, and the first pair of tie rods and the second pair of tie rods are rolled threaded steel bars.

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