CN220013392U - Segment assembly type ultra-high performance concrete pier template - Google Patents

Abstract

The utility model discloses a segment assembly type ultra-high performance concrete pier template, which comprises a cylindrical shell, wherein a plurality of preformed holes are processed in the shell, the inner top surface and the top surface of the shell are connecting parts, and the two segments of shells are tightly connected through matched bolt columns passing through the preformed holes; the connecting part is paved with a water stop belt; mortar is poured at the gap of the bolt column for fixation; compared with the prior art, the utility model has the advantages that: the UHPC template can be directly spliced for use, and the later-stage form stripping is not needed, so that the construction period is effectively shortened.

Description

Segment assembly type ultra-high performance concrete pier template

Technical Field

The utility model relates to the technical field of bridges, in particular to a segment assembly type ultra-high performance concrete bridge pier template.

Background

The construction of traditional bridge pier needs to place the steel sheet pile under water first, then installs concrete form in the steel sheet pile, carries out concrete pier and pours at last to the construction period is to carry out water pumping, install and demolish steel sheet pile etc. a plurality of underwater operations. The traditional method has higher requirements on the technical aspect and has great construction operation difficulty. The traditional method has the defects that on one hand, the consumed time cost and labor cost are high, and because the construction steps are complicated and each step cannot be carried out simultaneously, the time cost and labor cost of the traditional method are greatly increased, and the construction period is also increased; on the other hand, the later maintenance is carried out, the traditional concrete is relatively shortened in service life due to corrosion and the property reasons of the materials of the traditional concrete in the marine environment for a long time, and the safety is reduced, so that the later maintenance time is longer, and the labor and time cost is relatively increased.

The Chinese proposal patent with the publication number of CN115162714A discloses an air bag power prefabricated UHPC telescopic template with adjustable template thickness, which is used for adjusting the position of an inner template through an air bag and realizing demoulding after pouring, forming and cooling of a pier through air bag inflation and deflation. However, the method has the defects that firstly, the outer template is formed by assembling two semicircular rings into a whole ring and then connecting the whole ring up and down to form a whole pier template, and the outer template is adjustable but complicates the construction process. And secondly, the design of the air bag and the inner template makes the precision requirement fine, so that the prefabrication cost of a factory is increased, and the popularization and the application are not facilitated.

Disclosure of Invention

The utility model aims to solve the technical problem of designing a pier template prefabricated by UHPC.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a segment assembly type ultra-high performance concrete pier template comprises a cylindrical shell, wherein a plurality of preformed holes are formed in the shell, the inner top surface and the top surface of the shell are connecting parts, and the two segments of shells are tightly connected through the preformed holes by matched bolt columns; the connecting part is paved with a water stop belt; mortar is poured at the gap of the bolt column for fixation.

Compared with the prior art, the utility model has the advantages that: 1) The UHPC template can be directly spliced for use, and a later-stage form removal is not needed, so that the construction period is effectively shortened;

2) Compared with the traditional bridge pier construction in the construction engineering, the construction link of pumping water can be omitted, and the method is used for directly pouring concrete which can be constructed underwater, so that the construction period and the construction difficulty can be effectively reduced;

3) Compared with a common concrete template, the UHPC template has better anti-seepage and anti-corrosion performances and compression resistance, can prolong the service life of the pier, and reduces the cost for maintaining the pier in the later period;

4) The compactness and high strength of the UHPC template can improve the restraint force on core concrete, thereby improving the safety and stability of the pier.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic cross-sectional structure of the present utility model.

Fig. 3 is a schematic illustration of the connection of two-section shells of the present utility model.

As shown in the figure: 1. preformed hole 2, bolt post, 3, connecting portion.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

In the embodiment shown in fig. 1 to 3, the utility model is a ring-shaped segment assembled ultra-high performance concrete pier template, which is prefabricated in a factory and then is transported to a construction site for splicing. The purpose of this scheme is to provide the prefabricated pier construction template of ultra-high performance concrete, provides a new construction method for bridge construction, provides a new construction technology for its construction selection, can guarantee that pier engineering quality improves by a wide margin under the circumstances, reduces construction cost relatively, saves construction cycle to accomplish the quality is controllable. The scheme is a new application to the ultra-high performance concrete material. The characteristics of the ultra-high performance concrete are greatly improved compared with those of common concrete, the ultra-high performance concrete can protect the concrete in the formwork, the concrete in the formwork only has the bearing and supporting effects, and the scheme can save the economic cost, the time cost and the labor cost of construction period and later maintenance. The section assembly UHPC pier template introduced at the time is the same as the conventional pier construction process, but saves the time for installing and dismantling the steel sheet piles, solves the defects of the conventional reinforced concrete, does not need maintenance in the later maintenance, and saves the later maintenance cost of the conventional pier construction.

In one embodiment of the utility model, as shown in fig. 1 to 3, a plurality of preformed holes are processed in the shell, the inner top surface and the top surface of the shell are connecting parts, and the two shells are tightly connected through the preformed holes by matched bolt columns; the connecting part is paved with a water stop belt; cement is poured at the gap of the bolt column for fixation. The shell is UHPC template, and compared with the common concrete template, the UHPC template has better impermeability and compression resistance, and the service life of UHPC can exceed two hundred years in marine seawater corrosion environment. Meanwhile, compared with a common template, the prefabricated ring UHPC template is more convenient to assemble, and is assembled through the segmented template and connected in a mode of bolt connection by a tooth-shaped joint or internal punching. And because of the characteristic of the ultra-high performance concrete, the template can be made lighter under the condition of ensuring the safety and the performance, and the construction weight and the construction difficulty can be reduced.

In one embodiment of the present utility model, as shown in fig. 1 to 3, a segment-assembled UHPC pier template construction:

1. and (3) measuring and lofting: measuring the center line, side line, elevation and the like of the pier body on the base roof (such as the bearing platform roof);

2. prefabricating a template: prefabricating UHPC templates according to the measured data, leaving holes required for later connection at each segment, and arranging waterproof bonding layers on the connecting surfaces of bridge pier templates;

3. and (3) template assembly: tightly connecting and assembling the UHPC template on land, and further improving the compactness of the UHPC template by using materials such as pegs, steel bars and the like;

4. and (3) lifting the template: hoisting the template to a designated place by using hoisting equipment;

5. pouring reinforced concrete: and directly pouring the constructed concrete in the template pouring cavity.

While there has been shown and described what is at present considered to be the fundamental principles and the main features of the utility model and the advantages of the utility model, it will be understood by those skilled in the art that the utility model is not limited to the foregoing embodiments, but is described in the foregoing description merely illustrates the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (1)

1. The utility model provides a festival segmentation assembled ultra-high performance concrete pier template, includes cylindricality casing, its characterized in that: a plurality of preformed holes (1) are formed in the shell, the inner top surface and the top surface of the shell are connecting parts (3), and the two sections of the shells are tightly connected through the preformed holes (1) by matched bolt columns (2); the connecting part (3) is paved with a water stop belt; and mortar is poured and fixed at the gap of the bolt column (2).