CN218861364U

CN218861364U - Temporary fixing structure for prefabricated pier column section of pier

Info

Publication number: CN218861364U
Application number: CN202320044449.2U
Authority: CN
Inventors: 张振钛; 张予欣; 施文龙; 袁国涛; 张学斌; 徐镭
Original assignee: Xinjiang Railway Survey & Design Institute Co ltd
Current assignee: Xinjiang Railway Survey & Design Institute Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-04-14
Anticipated expiration: 2033-01-09

Abstract

The utility model discloses a temporary fixing structure of prefabricated assembly type pier stud subsection, include: pier stud, the pre-buried steel pipe reinforcing bar of pier stud, steel pipe, anchor rod iron, nut, shaped steel bracket, the shaped steel bracket constitute by the channel-section steel, be the crisscross horizontal interval of vertically and horizontally crossing respectively in two sections pier studs that link up mutually and setting up the steel pipe, set up the pre-buried steel pipe reinforcing bar of pier stud that constitutes the groined type in the pier stud around the steel pipe respectively, worn an anchor rod iron in the steel pipe of coaxial arrangement respectively, the shaped steel bracket on set up respectively with anchor rod iron end matched with through-hole, through setting up the nut on the anchor rod iron end with the vertical fixed attached on the outer wall of pier stud department that links up mutually. The utility model discloses can fix first section pier stud and second section pier stud, effectively prevent the second section pier stud occurence of failure that falls.

Description

Temporary fixing structure for prefabricated pier column section of pier

Technical Field

The utility model relates to a temporary fixation structure of prefabricated assembled pier stud festival section belongs to bridge engineering technical field.

Background

When the height of the prefabricated pier is more than or equal to 12m and less than or equal to 15m, the structure size is as follows: the outer diameter of each pier column is 2.0m, the wall thickness is 0.4m, and the transverse center distance of the pier columns is 2.8m; the transverse width of the cover beam is 5.6m, the longitudinal width is 2.4m (32m +24m is unequal to the longitudinal width of the connection pier and is 2.5 m), and the height is 1.3m (32 +24m is unequal to the height of the cover beam of the connection pier and is 1.7m,16+24m is unequal to the height of the cover beam of the connection pier and is 1.8 m). In order to facilitate transportation and installation, the pier body is prefabricated into two sections, the pier bottom section is a standard section (7 m long), and the length of the upper section is adjusted according to the pier height. The pier bottom is provided with a post-pouring section, the post-pouring section is 3.2m high, connecting steel bars are arranged in the post-pouring section, and the connecting steel bars are pre-buried in the bearing platform. The capping beam, the pier column and the bearing platform are connected through prestress. First festival pier stud festival section installation finishes, hoists second festival pier stud in first festival pier stud top surface, and the second festival pier stud extremely easily topples, seriously threatens constructor's life safety, must fix the junction. The traditional method is to erect a rigid frame with certain transverse resistance to temporarily fix the joint, and the method has the defects of long erection and dismantling period, large steel consumption and high cost.

Disclosure of Invention

An object of the utility model is to provide a temporary fixed knot of prefabricated assembly type pier stud segment constructs can fix first section pier stud and second section pier stud, prevents effectively that second section pier stud from falling the occurence of failure, ensures the construction safety of follow-up bent cap hoist and mount and prestressing force stretch-draw process, prevents that prefabricated assembly type pier stud from toppling over and falling.

The utility model discloses a realize above-mentioned purpose, the technical solution who adopts is: a temporary fixing structure of prefabricated pier stud segments, comprising: pier stud, the pre-buried steel pipe strengthening rib of pier stud, steel pipe, anchor rod iron, nut, shaped steel bracket, the shaped steel bracket constitute by the channel-section steel, be crisscross horizontal interval respectively in two sections pier studs that link up mutually and setting up the steel pipe, set up the pre-buried steel pipe strengthening rib of pier stud that constitutes the groined type in the pier stud around the steel pipe respectively, worn an anchor rod iron in the steel pipe of coaxial arrangement respectively, the shaped steel bracket on set up respectively with anchor rod iron end matched with through-hole, through setting up the nut on anchor rod iron end with the vertical fixed attached on the outer wall of pier stud department that links up mutually of shaped steel bracket.

The pier column embedded steel pipe reinforcing steel bars are effectively connected with pier column reinforcing steel bars, steel pipes are embedded in the pier columns, prefabricated pier columns of the prefabricated pier are prefabricated, demolding and maintaining are carried out when the strength of concrete reaches 75%, and the prefabricated pier columns are used for standby when the strength reaches 100%; and hoisting the prefabricated pier stud, penetrating the anchoring steel bar through the steel pipe and the reserved hole of the steel section bracket, screwing the nut, and finishing the installation of the device for temporarily fixing the prefabricated pier stud segment.

The utility model discloses: 1. through setting up the pre-buried steel pipe reinforcing bar of pier stud, reserve the steel pipe side concrete to the pier stud and carry out local enhancement. 2. Through setting up the steel pipe, do benefit to the anchor rod iron and pass the pier stud. 3. Through setting up the shaped steel bracket, effectively fix prefabricated assembled pier stud. 4. Through setting up the type nut, effectively be fixed in the pier stud edge with the shaped steel bracket. The utility model discloses can fix first section pier stud and second section pier stud, effectively prevent the second section pier stud accident of falling from taking place, ensure the construction safety of follow-up bent cap hoist and mount and prestressing force stretch-draw process, prevent that prefabricated assembly pier stud from toppling over and falling.

Drawings

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

fig. 2 is a schematic side view of the present invention;

FIG. 3 is a bottom view taken along line I-I of FIG. 1;

FIG. 4 is an enlarged view of part A of FIG. 1;

fig. 5 is the utility model discloses well pre-buried steel pipe reinforcing bar's schematic diagram.

Detailed Description

The invention is described in further detail below with reference to the following description of the figures and the detailed description of the preferred embodiments.

Referring to fig. 1 to 5, a temporary fixing structure of prefabricated pier stud segments, comprising: pier stud 6, the pre-buried steel pipe reinforcing bar of pier stud 1, steel pipe 2, anchor rod iron 3, nut 4, shaped steel bracket 5 constitute by the channel-section steel, be crisscross horizontal interval respectively in two sections pier studs 6 that link up mutually and set up steel pipe 2, set up the pre-buried steel pipe reinforcing bar of pier stud 1 that constitutes the groined type in pier stud 6 around the steel pipe 2 respectively, worn an anchor rod iron 3 in the steel pipe 2 of coaxial arrangement respectively, shaped steel bracket 5 on set up respectively with 3 end matched with through-holes of anchor rod iron, through set up on the pier stud outer wall of the vertical fixed attached 6 looks linking up department of shaped steel bracket iron 5 with nut 4 on 3 end of anchor rod iron. The utility model discloses can fix first section pier stud and second section pier stud, effectively prevent the second section pier stud accident of falling from taking place, ensure the construction safety of follow-up bent cap hoist and mount and prestressing force stretch-draw process, prevent that prefabricated assembly pier stud from toppling over and falling.

The pier column embedded steel pipe reinforcing steel bars 1 are effectively connected with pier column reinforcing steel bars, steel pipes 2 are embedded in the pier columns, prefabricated assembly type pier columns are prefabricated, demolding and maintaining are carried out after the concrete strength reaches 75%, and the prefabricated assembly type pier columns are used for standby after the concrete strength reaches 100%; and hoisting the prefabricated pier stud, penetrating the anchoring steel bar 3 through the steel pipe 2 and the steel bracket 5 to reserve a hole, screwing the nut 4, and completing the installation of the device for temporarily fixing the prefabricated pier stud segment.

The utility model provides a shaped steel bracket 5 is Q235 hot rolling channel-section steel, accords with "hot rolling shaped steel" GB/T706's requirement, and for the setting material, intensity is high, rigidity is big, and rolling technology is ripe, and the material performance is stable. The anchoring steel bar 3 is a high-strength low-relaxation prestressed steel bar, the anchoring force is durable and effective, and the performance of the anchoring steel bar meets the requirements of steel bar for prestressed concrete GB/T5223.3. The screw cap 4 is made of No. 45 high-quality carbon structural steel, needs quenching and tempering heat treatment, cannot generate cracks, overburning and decarburization, has surface hardness not less than HRC25, can effectively anchor the anchoring steel bar 3 and the profile steel corbel 5, and has the performance meeting the requirements of high-quality carbon structural steel GB 699. The screw thread at the end part of the anchoring steel bar 3 is formed by rolling, the pitch diameter of the screw thread at the end part is 16.026mm, the screw pitch is 1.5mm, the screw thread tolerance band is combined by 6H/6g, and the basic size and the tolerance meet the related requirements of 'basic size of common screw thread' GB/T196 and 'tolerance of common screw thread' GB/T197. The utility model discloses the device adopts bolted connection, is convenient for install and demolish.

Claims

1. A temporary fixing structure of prefabricated pier stud segments, comprising: pier stud (6), pier stud embedded steel pipe reinforcing bar (1), steel pipe (2), anchor rod iron (3), nut (4), shaped steel bracket (5), characterized by: shaped steel bracket (5) constitute by the channel-section steel, be crisscross horizontal interval respectively and set up steel pipe (2) in two sections pier stud (6) that link up mutually, set up pre-buried steel pipe reinforcing bar (1) of pier stud that constitutes the groined type in pier stud (6) around steel pipe (2) respectively, worn an anchor rod (3) in steel pipe (2) of coaxial arrangement respectively, shaped steel bracket (5) on set up respectively with anchor rod (3) end matched with through-hole, through setting up nut (4) on anchor rod (3) end with the vertical fixed attachment of shaped steel bracket (5) on the outer wall of pier stud (6) linking department mutually.