CN218508256U

CN218508256U - Rear rib method occluded thin-wall hollow pier

Info

Publication number: CN218508256U
Application number: CN202222795769.XU
Authority: CN
Inventors: 卢冠楠; 肖向荣; 刘丹娜; 杨伟威; 邵文泽; 葛纪平; 高昊; 田汉州
Original assignee: Road and Bridge International Co Ltd
Current assignee: Road and Bridge International Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-02-21
Anticipated expiration: 2032-10-21

Abstract

The utility model relates to a back muscle method interlock thin wall hollow pier, including a plurality of prefabricated pier shaft segments that dock from top to bottom, a plurality of segments divide into I type segment and II type segment two kinds of types, I type segment and II type segment interval set up, I type segment vertically divide into 4 modules along the pier stud, including two straight plate type modules and two U type modules, II type segment vertically divide into 4L type modules along the pier stud, and the intermodule of each segment is through tenon or tongue-and-groove interlock; a stirrup pore passage is arranged in a part of modules of each section, and the stirrups are inserted and connected with the steel bars poured in the rest modules through threaded sleeves; and a main rib pore passage is arranged in each module and penetrates through the main ribs, and the main ribs of the upper section and the lower section are connected through a threaded sleeve. The utility model discloses reduce the weight of every section pier stud by a wide margin, be convenient for transport, hoist and mount are favorable to popularizing and applying in mountain area and the inconvenient region of traffic.

Description

Rear rib method occluded thin-wall hollow pier

Technical Field

The utility model belongs to the technical field of the bridge construction, a construction of bridge pier stud is related to, concretely relates to hollow mound of back muscle method interlock thin wall.

Background

The pier stud is a bearing system of a bridge structure, and the construction quality of the pier stud directly influences the safety performance of the bridge structure. The traditional pier stud mostly adopts cast-in-place construction, the efficiency is lower, the influence of the construction environment and the maintenance environment on site is caused, and the quality uncontrollable factors are more.

With the development of the prefabricated assembly technology, the assembly type pier stud is also gradually applied to bridge construction. The assembled pier stud can be prefabricated in an industrialized and standardized manner, and has the advantages of controllable quality, high construction speed, no influence of construction environment and the like.

At present, the prefabricated pier stud is based on a sleeve connection technology, namely a connecting sleeve is preset in the prefabricated pier stud, a pre-embedded steel bar is arranged on the top surface of a bearing platform, when the prefabricated pier stud is installed on the bearing platform, the pre-embedded steel bar on the bearing platform is inserted into the sleeve, then grouting is carried out on the sleeve, and the steel bar and the sleeve connection are guaranteed through grouting. Although the method avoids some defects of cast-in-place construction to a certain extent, the method has some defects: on one hand, the compactness of the grouting in the sleeve is not well controlled and an effective detection means is lacked, so that the installation quality of the steel bar is not controllable; on the other hand, the sleeve is made of cast steel generally, so that the brittleness is high, and the anti-seismic effect is poor, so that the sleeve is difficult to popularize in a high-intensity earthquake area; thirdly, because the steel bars are inserted into the butt joint and grouting needs, and the mechanical property requirements of the steel bars are met, the sleeve needs to have larger inner cavity size and thickness, the outer diameter of the sleeve is far larger than the diameter of the steel bars, if the structural size of the pier column is not increased, the thickness of the protective layer is influenced by the sleeve, and in order to ensure the thickness of the protective layer, the structural size of the pier column needs to be increased, so that the cost of prefabricating the pier column is increased.

In view of the existence of above-mentioned problem, present prefabricated pier stud is mostly a post mode to the top, causes prefabricated pier stud volume and weight great again like this, needs the main equipment to transport, install, and the field hardening on site requires highly, and then has wholly promoted construction cost, especially to the relatively poor mountain area of traffic conditions, because large-scale component transportation, main equipment are gone into the field difficulty, also consequently has limited the application of prefabricated pier stud in mountain area bridge, present mountain area bridge does not have pier stud prefabricated assembled construction case yet.

In addition, for the prefabricated thin-wall hollow pier, the inner die is difficult to demould due to the extrusion of the concrete to the inner die plate after the pouring, and the difficulty of prefabricating the pier stud is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hollow mound structure of back muscle method interlock thin wall to the above-mentioned problem that exists of current prefabricated assembled pier stud, under the prerequisite of guaranteeing pier stud construction quality, reduce the construction cost of prefabricated assembled pier stud to promote the popularization and application of assembled pier stud construction method.

The technical scheme of the utility model as follows:

the utility model provides a hollow mound of back muscle method interlock thin wall, includes the prefabricated pier shaft segment of a plurality of upper and lower docks, its characterized in that: the segments are divided into two types of I-type segments and II-type segments which are arranged at intervals, wherein:

the I-shaped section is longitudinally divided into 4 modules along the pier stud and comprises two straight plate modules and two U-shaped modules, the end surfaces of two sides and the upper and lower end surfaces of each module are respectively provided with a tenon or a mortise, and the end surfaces of two sides of the two straight plate modules are respectively occluded with the end surfaces of two sides of the two U-shaped modules through the tenons or the mortises; stirrups are poured in the two straight plate modules, stirrup mounting channels are respectively arranged at two ends of the two U-shaped modules, and stirrups are inserted in the stirrup mounting channels; two ends of a stirrup poured in the two straight plate modules are respectively in threaded connection with one end of the stirrup inserted in the two U-shaped modules through threaded sleeves, and the other end of the stirrup inserted in the two U-shaped modules is provided with an anchoring nut;

the section II is divided into 4L-shaped modules along the longitudinal direction of the pier stud, the end faces of two sides and the upper and lower end faces of each L-shaped module are respectively provided with a tenon or a mortise, the 4L-shaped modules are combined into a closed ring, and the end faces of adjacent modules are occluded by the tenons or the mortises; one end of each L-shaped module is cast with a stirrup, the other end is provided with a stirrup channel, and the stirrup channel is internally inserted with a stirrup; one end of a stirrup poured in each L-shaped module is in threaded connection with one end of a stirrup inserted in a stirrup channel of the other L-shaped module through a threaded sleeve, and an anchoring nut is installed at the other end of the stirrup inserted in the stirrup channel of each L-shaped module;

a plurality of main rib channels are longitudinally arranged in each module along the pier stud, a main rib is inserted into each main rib channel, and the main ribs of the upper section and the lower section are connected through threaded sleeves; the lowermost section is arranged on a bearing platform, a threaded sleeve is embedded in the position, corresponding to each main rib of the pier, of the top surface of the bearing platform, a tenon or a mortise corresponding to the bottom surface of the pier section is arranged, the lower end of each main rib of the lowermost section is in threaded connection with each threaded sleeve on the bearing platform, and the upper section and the lower section and the bearing platform are occluded through the tenons or the mortises.

The utility model divides the pier stud into a plurality of sections, each section is divided into a plurality of modules, which greatly reduces the weight of each section of pier stud, is convenient for transportation and hoisting, and is beneficial to popularization and application in mountainous areas and traffic-inconvenient areas; each pier column is divided into a plurality of plate unit modules, so that the mold erection and mold removal are facilitated during prefabrication, the prefabrication difficulty is greatly reduced, and the industrialized rapid prefabrication is facilitated; the main reinforcement between the segments is connected by the threaded sleeves, the stress is reliable, the tenon-and-mortise structure fit between the upper segment and the lower segment and between the modules of each segment can also increase the shear resistance of the structure, and the anti-seismic effect of the prefabricated pier column is not different from that of a cast-in-place pier column.

Drawings

Fig. 1 is a side view schematic structure of the present invention;

FIG. 2 is a schematic block diagram of a type I segment;

FIG. 3 is a schematic cross-sectional view of a type I segment;

FIG. 4 is a schematic block diagram of a type II segment;

FIG. 5 is a schematic cross-sectional view of a type II segment;

FIG. 6 is a schematic view of a connection structure of a stirrup in a stirrup channel and a stirrup poured in a module;

FIG. 7 is a schematic view of the connection between the stirrups by a threaded sleeve;

fig. 8 is a schematic view of an anchoring structure of a stirrup in a stirrup channel towards the outer end of a pier column;

FIG. 9 is a schematic view of a main rib arrangement structure in a main rib hole;

fig. 10 is a schematic view of the connection structure of the main ribs between the modules through the threaded sleeves.

Detailed Description

As shown in figure 1, the utility model discloses a plurality of prefabricated pier shaft segmentations of butt joint from top to bottom, a plurality of segmentations divide into two kinds of types of I type segmentations 10 and II type segmentations 20, and I type segmentations and II type segmentations interval set up.

As shown in fig. 2, 3, 6, 7, 8, the i-shaped section 10 is divided into 4 modules along the longitudinal direction of the pier column, and includes two straight plate modules 101 and two U-shaped modules 102, the end surfaces of both sides and the upper and lower end surfaces of each module are respectively provided with a tenon 1 or a mortise 2, and the end surfaces of both sides of the two straight plate modules are respectively engaged with the end surfaces of both sides of the two U-shaped modules through the tenons or the mortises; stirrups 3 are poured in the two straight plate modules, two ends of each of the two U-shaped modules are respectively provided with a stirrup mounting hole 4, and the stirrups 3 are inserted into the stirrup mounting holes; two ends of a stirrup poured in the two straight plate modules are respectively in threaded connection with one end of the stirrup inserted in the two U-shaped modules through a threaded sleeve 5, and the other end of the stirrup inserted in the two U-shaped modules is provided with an anchoring nut 6;

as shown in fig. 4, 5, 6, 7 and 8, the ii-shaped segment 20 is divided into 4L-shaped modules 201 along the longitudinal direction of the pier stud, the two side end faces and the upper and lower end faces of each L-shaped module are respectively provided with a tenon 1 or a mortise 2, the 4L-shaped modules are combined into a closed ring, and the end faces of adjacent modules are engaged with each other through the tenons or the mortises; one end of each L-shaped module is poured with a stirrup 3, the other end is provided with a stirrup channel 4, and the stirrup 3 is inserted into the stirrup channel; one end of a stirrup poured in each L-shaped module is in threaded connection with one end of a stirrup inserted in a stirrup channel of the other L-shaped module through a threaded sleeve 5, and the other end of the stirrup inserted in the stirrup channel of each L-shaped module is provided with an anchoring nut 6;

as shown in fig. 9, 10 and 2 to 5, a plurality of main rib channels 7 are longitudinally arranged in each module along the pier stud, a main rib 8 is inserted into each main rib channel, and the main ribs of the upper section and the lower section are connected through threaded sleeves; the lowermost section is arranged on a bearing platform 30, a threaded sleeve 5 is embedded in the position, corresponding to each main rib, of the pier column on the top surface of the bearing platform, a tenon or a mortise corresponding to the bottom surface of the pier column section is arranged, the lower end of each main rib of the lowermost section is in threaded connection with each threaded sleeve on the bearing platform respectively, and the upper section and the lower section and the bearing platform are occluded through the tenon or the mortise.

The utility model discloses when each module is prefabricated, stirrup tip spiro union screw sleeve of pouring in the module in advance, and screw sleeve's half and stirrup spiro union, another half is reserved for be connected with other module stirrup tunnels interior male stirrup.

The utility model discloses when the construction, first festival section can adopt I type festival section, and the second festival section adopts II type festival sections, or first festival section adopts II type festival sections, and the second festival section adopts I type festival section, so the interval installation.

Taking the first section as an I-shaped section and the second section as an II-shaped section as an example, the specific installation method is as follows:

hoisting each module of the I-shaped section to a bearing platform, coating cementing materials on the butt joint surfaces of the modules, and engaging the modules through tenons and mortises; and (3) inserting stirrups into each stirrup channel, screwing one end of the inserted steel bar with a threaded sleeve at the end part of the poured stirrup in the butt joint module, enabling the other end of the inserted steel bar to face the outer wall surface of the pier column, screwing an anchoring nut at the end, and then grouting into the steel bar channel.

Inserting a main rib into each main rib pore channel, connecting the lower end of each main rib with a threaded sleeve pre-embedded on the bearing platform in a threaded manner, connecting the upper end of each main rib with a threaded sleeve in a threaded manner, connecting one half of the threaded sleeve with the main rib in a threaded manner, and reserving the other half of the threaded sleeve for connecting with the upper section main rib; grouting in the main reinforcement pore canal to finish the installation of the first section pier stud.

And hoisting the modules of the II-type section onto the first section, adjusting the fit between the modules and the tenon and the mortise between the modules and the first section, and then installing the stirrups and the main reinforcements according to the installation mode of the first section.

And (4) installing subsequent sections by adopting the mode of alternately installing the I-shaped sections and the II-shaped sections to complete the installation construction of the assembled pier stud.

Claims

1. The utility model provides a hollow mound of back muscle method interlock thin wall, includes a plurality of prefabricated pier shaft sections of butt joint from top to bottom, its characterized in that: the multiple segments are divided into two types of I-type segments and II-type segments, the I-type segments and the II-type segments are arranged at intervals, wherein:

the II-type section is divided into 4L-shaped modules along the longitudinal direction of the pier stud, the end surfaces of two sides and the upper end surface and the lower end surface of each L-shaped module are respectively provided with a tenon or a mortise, the 4L-shaped modules are combined into a closed ring shape, and the end surfaces of the adjacent modules are occluded through the tenons or the mortises; one end of each L-shaped module is cast with a stirrup, the other end is provided with a stirrup channel, and the stirrup channel is internally inserted with a stirrup; one end of a stirrup poured in each L-shaped module is in threaded connection with one end of a stirrup inserted in a stirrup channel of the other L-shaped module through a threaded sleeve, and the other end of the stirrup inserted in the stirrup channel of each L-shaped module is provided with an anchoring nut;