CN101135138A

CN101135138A - Continuous rigid frame bridge vertical rotation construction method

Info

Publication number: CN101135138A
Application number: CNA2006100217396A
Authority: CN
Inventors: 周志祥; 张太雄; 徐勇
Original assignee: ZHOU ZHIXIANG ZHANG TAIXIONG XU YONG; ZHOU ZHIXIANG ZHANG TAIXIONG X
Current assignee: ZHOU ZHIXIANG ZHANG TAIXIONG XU YONG; ZHOU ZHIXIANG ZHANG TAIXIONG X
Priority date: 2006-08-31
Filing date: 2006-08-31
Publication date: 2008-03-05

Abstract

The present invention belongs to the field of building structure technology, and discloses one construction process of building continuous rigid frame bridge. The construction process includes the following steps: constructing the foundation, the piers and the beam segments on the piers; making main beam with lower end connected temporarily to the beam segment on the pier vertically, installing guy cable connected between the top of the tower and the top of the main beam, removing the temporary connection between the main beam and the beam segment on the pier and releasing the guy cable gradually with tension controlling apparatus for the main beam to turn around the knuckle until reaching the designed location, connecting the reinforcing bars to the knuckle and depositing concrete to form integral beam, and completing the side spans and the mid span healing sections to form the integral bridge. The present invention has simplified construction process and other advantages.

Description

Continuous rigid frame bridge vertical rotation construction method

The invention belongs to the building structure technology field, relate in particular to continuous rigid frame bridge vertical rotation construction method.

In the prior art, the job practices that continuous rigid frame bridge is commonly used has two kinds, and the one, segmented cast-in-place cantilever method, its advantage is to need not prefabricated place, equipment requires lower; But complex process, the construction period is long, cost is high; Because the concrete cast environment of each sections of girder, the length of time have nothing in common with each other, the loss of prestress that is caused by stretch-draw in batches, pipe friction and concrete shrinkage and creep is difficult to accurately estimate, numerous vertical abutment joints that segmented in addition construction causes are difficult to arrive the desirable quality requirement, cause continuous rigid frame bridge quite a lot excessive the and cracking of post deflection to occur, had a strong impact on the normal use and the durability of bridge.The 2nd, segmented prefabricated and erection by protrusion: its advantage be precast beam section quality be easy to guarantee and the construction period shorter, but that transporting and hoisting equipment requires is high, the cost height; The problem that has numerous vertical abutment joint difficult quality guarantee equally.

The object of the present invention is to provide that a kind of easy construction, equipment are simple, dependable performance, the duration is short, cost is low, has the continuous rigid frame bridge vertical rotation construction method of obvious economic technology benefit.

Purpose of the present invention realizes with following technical step: A. finishes the construction of abutment, primary abutment plinth and bridge pier at the desired location of bridge location, finishes the cast-in-place beam section construction of end bay on support, finishes the rotating hinge of pier back timber section and its end Embedment Construction is installed; B. vertically make girder, its lower end is connected with pier back timber section by rotating hinge, but during the vertical making of girder for affixed temporarily; C. set up the required pylon of turning (can with girder vertical to make required pylon shared) on pier back timber section, and install and have the drag-line of putting a control appliance, the drag-line two ends are connected with the girder upper end with tower top respectively; D. remove the affixed temporarily of girder and pier back timber section, progressively discharge drag-line, make girder rotate to its design attitude (can apply interim prestressed cable in order to cracking resistance to girder in case of necessity) around rotating hinge by putting a control appliance; E. all kinds of reinforcing bars that connect rotating hinge zone girder, and fluid concrete makes girder itself and pier back timber section become integral body are finished the pre-stress construction of girder by designing requirement, remove drag-line and pylon then; F. by designing requirement successively finish end bay closure section and in stride the construction of closure section, the work such as deck paving, railing of finishing form full-bridge.

The good effect that the present invention has is: will change into the vertical making that is similar to Bridge Pier Construction as the main girder construction of crossing over structure, and greatly simplify construction technology; Vertical turn mode with the basic symmetrical balance in pylon both sides forms main bridge, avoided the necessary anchor arrangement bulkily of conventional rotator construction opposing drag-line counter-force, obviously reduced requirement, significantly shortened the construction period construction equipment, thus greatly saving bridge cost; The vertical seam of making of girder is horizontal joint, and concrete and seam quality thereof are easy to guarantee; Contemporaneity is finished pre-stress construction, makes the estimation of loss of prestress relatively accurate, helps strengthening the reliability and the durability of bridge construction.The present invention also can be applicable to the construction of truss bridge and steel one concrete combination beam bridge.

Below in conjunction with accompanying drawing embodiments of the invention are described in further detail:

Fig. 1 is the first road master operation of the invention process;

Fig. 2 is the second road master operation of the invention process;

Fig. 3 is the 3rd a road master operation of the invention process;

Fig. 4 is the 4th a road master operation of the invention process;

Fig. 5 is the 5th a road master operation of the invention process;

Fig. 6 is the 6th a road master operation of the invention process.

Part 1 is primary abutment plinth and bridge pier, and part 2 is pier back timber sections, and part 3 is rotating hinges, and part 4 is vertical girders of making, and part 5 is construction pylons, and part 6 is to have the drag-line of putting a control appliance, and part 7 is the cast-in-place beam sections of end bay, and part 8 is end bay closure sections, and part 9 is striden the closure section in being.

The present invention realizes by six road master operations with following technical step:

First road master operation: the A. finishes the construction of abutment, primary abutment plinth and bridge pier 1 at the desired location of bridge location, finishes cast-in-place beam section 7 constructions of end bay on support, finishes the rotating hinge 3 of pier back timber section 2 and its end Embedment Construction are installed;

Second road master operation: the B. vertically makes girder 4, and its lower end is connected with pier back timber section 2 by rotating hinge 3, but during the vertical making of girder 4 for affixed temporarily;

The 3rd road master operation: C. sets up the required pylon 5 of turning (can with girder vertical to make required pylon shared) on pier back timber section 2, and installs and have the drag-line 6 of putting a control appliance, and drag-line 6 two ends are connected with girder 4 upper ends with pylon 6 tops respectively;

The 4th road master operation: D. removes the affixed temporarily of girder 4 and pier back timber section 2, progressively discharges drag-line 6 by putting a control appliance, makes girder 4 rotate to its design attitude around rotating hinge 3;

The 5th road master operation: E. connects all kinds of reinforcing bars of rotating hinge 3 regional girders, and fluid concrete makes girder 4 itself and pier back timber section 2 become integral body, finishes the pre-stress construction of girder by designing requirement, removes drag-line 6 and pylon 5 then;

The 6th road master operation: F. by designing requirement successively finish end bay closure section 8 and in stride the construction of closure section 9, the work such as deck paving, railing of finishing form full-bridge.

Claims

1. continuous rigid frame bridge vertical rotation construction method, it is characterized in that: A. finishes the construction of abutment, primary abutment plinth and bridge pier (1) at the desired location of bridge location, on support, finish the cast-in-place beam section of end bay (7) construction, finish the rotating hinge (3) of pier back timber section (2) and its end Embedment Construction is installed; B. vertically make girder (4), its lower end is connected with pier back timber section (2) by rotating hinge (3), but during the vertical making of girder (4) for affixed temporarily; C. set up the required pylon (5) of turning on pier back timber section (2), and install and to have the drag-line (6) of putting a control appliance, drag-line (6) two ends are connected with girder (4) upper end with pylon (5) top respectively; D. remove the affixed temporarily of girder (4) and pier back timber section (2), progressively discharge drag-line (6), make girder (4) rotate to its design attitude around rotating hinge (3) by putting a control appliance; E. all kinds of reinforcing bars that connect the regional girder of rotating hinge (3) connect, and fluid concrete makes girder (4) itself and pier back timber section (2) become integral body, finish the pre-stress construction of girder by designing requirement, remove drag-line (6) and pylon (5) then; F. by designing requirement successively finish end bay closure section (8) and in stride the construction of closure section (9), the work such as deck paving, railing of finishing form full-bridge.