CN-121976468-A - Intelligent hydraulic climbing formwork construction process for main tower of cable-stayed bridge

CN121976468ACN 121976468 ACN121976468 ACN 121976468ACN-121976468-A

Abstract

The invention discloses a construction process of an intelligent hydraulic climbing formwork of a main tower of a cable-stayed bridge, which comprises the steps of firstly pouring concrete after a buried part system is embedded to complete foundation construction, secondly assembling the climbing formwork, preassembling a frame body, lifting and installing a formwork unit, connecting a hydraulic oil pipe with a centralized pump station, arranging an intelligent control system and an intelligent maintenance system on the formwork, debugging each system parameter, thirdly, climbing for the first time, detecting the construction parameters through the intelligent control system, starting the centralized pump station, utilizing an upper reversing box, a lower reversing box and the hydraulic oil pipe to cooperatively act, realizing alternate lifting of a guide rail and the frame body, locking the guide rail and fixing the formwork after climbing in place, and fastening the embedded part system by adopting a multiple anchoring structure of a climbing cone, a stress bolt and a high-strength screw rod after the stress bolt penetrates through a frame body connecting plate, so that the frame body can be stably anchored to the bridge tower, and the frame body is prevented from being deviated or unstable. The invention belongs to the field of hydraulic climbing formwork construction technology, and particularly relates to a cable-stayed bridge main tower intelligent hydraulic climbing formwork construction technology.

Inventors

CHENG BEIBEI
WAN BIN
LV HAN
DENG XIAOFENG
WU HUAYANG
XIE YIHONG
LI ZHIGANG
KONG JING
XIA MINGFENG
Liao Jiadi

Assignees

中铁广州工程局集团有限公司
厦深铁路广东有限公司
中铁广州工程局集团第二工程有限公司
中铁广州工程局集团检测中心有限公司

Dates

Publication Date: 20260505
Application Date: 20260310

Claims (9)

1. The intelligent hydraulic climbing formwork construction process for the main tower of the cable-stayed bridge is characterized by comprising the following steps of: firstly, pouring concrete after embedding a buried part system (9) to finish foundation construction; step two, assembling a climbing formwork, preassembling a frame body (1), lifting and installing a template (2) unit, connecting a hydraulic oil pipe (8) with a centralized pump station (19), arranging an intelligent control system and an intelligent maintenance system on the template (2), and debugging parameters of each system; Step three, climbing for the first time, detecting construction parameters through an intelligent control system, starting a centralized pump station (19), and locking the guide rail (15) and fixing the template (2) after climbing in place by utilizing the cooperative action of an upper reversing box (16), a lower reversing box (17) and a hydraulic oil pipe (18) to realize the alternate lifting of the guide rail (15) and the frame body (1); circularly constructing, installing a buried part system (9) after binding steel bars, then closing the mould to pour concrete, and then continuously climbing after removing the mould, and repeating the operation until the bridge tower construction is completed; And fifthly, dismantling the climbing formwork, namely dismantling the intelligent maintenance system, the intelligent control system external equipment, the hydraulic oil pipe (8), the template (2), the frame body (1) and the embedded part system (9) in sequence in the reverse order of installation.
2. The intelligent hydraulic climbing formwork construction process for the cable-stayed bridge main tower according to claim 1, wherein the embedded part system (9) comprises: the embedded part comprises an embedded part plate (13), an embedded part hanging seat (14), a climbing cone (11), a stress bolt (10) and a high-strength screw rod (12); The embedded part plate (13) is made of a steel plate, a high-strength screw rod (3) is fixedly arranged on one side of the embedded part plate (13), and a climbing cone (11) is connected to the high-strength screw rod (3) through threads; one end of the climbing cone (11) far away from the high-strength screw rod (12) is connected with a stress bolt (10) through threads; one end of the stress bolt (10) is connected with the inner thread of the climbing cone (11), and the other end of the stress bolt passes through the connecting plate of the frame body (1) and is fastened by a nut, so that the anchoring of the frame body (1) and the bridge tower is realized; The embedded part hanging seat (14) is L-shaped, and the horizontal section is fixed with the top surface of the embedded part plate (13) through the high-strength screw rod (12).
3. The intelligent hydraulic climbing formwork construction process for the cable-stayed bridge main tower according to claim 2, wherein the formwork (2) comprises: the wood beam comprises a glued panel (7), a wood beam (6), a channel steel back edge (3), an end wood block (5) and a wood beam lifting hook (4); one side of the glued panel (7) is fixed by a self-tapping bolt wood working beam (6), and the wood working beam (6) is longitudinally arranged along the outer side of the glued panel (7); the side, far away from the glued panel (7), of the woodworking girder (6) is welded with the groove steel back edge (3); The end battens (5) are fixedly arranged above the templates (2), and the end battens (5) are connected with the channel steel back edges (3) and the wood I-beams (6) through bolts and are used for lifting the templates (2).
4. The intelligent hydraulic climbing formwork construction process for the cable-stayed bridge main tower according to claim 3, wherein the hydraulic oil pipe (8) comprises: the hydraulic oil pipe (18), the centralized pump station (19), the guide rail (15), the upper reversing box (16) and the lower reversing box (17); the guide rail (15) is fixedly arranged on the frame body (1); The hydraulic oil pipe (18) adopts a double-acting piston cylinder, and the cylinder diameter is provided with a connecting lug plate according to the end part of a piston rod arranged on the frame body (1) in load calculation determination.
5. The intelligent hydraulic climbing formwork construction process for the main tower of the cable-stayed bridge according to claim 4, wherein the construction process comprises the following steps: The hydraulic oil pipe (18) is connected with a centralized pump station (19), and the centralized pump station (19) is internally provided with a high-pressure gear pump.
6. The intelligent hydraulic climbing formwork construction process for the cable-stayed bridge main tower is characterized in that an upper reversing box (16) and a lower reversing box (17) are arranged on the guide rail (15), pawl mechanisms are arranged in the upper reversing box (16) and the lower reversing box (17) and are respectively connected with piston rods of hydraulic oil pipes (18), pawls in the upper reversing box (16) and the lower reversing box (17) are matched with clamping grooves of the guide rail (15) and used for alternately locking and jacking the guide rail (15) and the frame body (1).
7. The intelligent hydraulic climbing formwork construction process for the cable-stayed bridge main tower according to claim 6, wherein an intelligent control system is arranged in the middle layer of the frame body (1), and a PLC master controller is arranged in the intelligent control system and is used for receiving sensor data and outputting control instructions.
8. The intelligent hydraulic climbing formwork construction process for the cable-stayed bridge main tower according to claim 7, wherein an intelligent maintenance system is arranged on the formwork (2), and a mist generator and a spraying system are arranged inside the intelligent maintenance system and used for improving the humidity of maintenance environment.
9. The intelligent hydraulic climbing formwork construction process for the cable-stayed bridge main tower, which is disclosed in claim 8, is characterized in that the glued panel (7) adopts a waterproof glued plate with the thickness of more than or equal to 18 mm; The channel steel back ridge (3) adopts Q235 channel steel; the wood beam (6) is a solid wood square with the cross section of 100mm multiplied by 100 mm.

Description

Intelligent hydraulic climbing formwork construction process for main tower of cable-stayed bridge Technical Field The invention belongs to the technical field of hydraulic climbing formwork construction processes, and particularly relates to an intelligent hydraulic climbing formwork construction process for a main tower of a cable-stayed bridge. Background In the construction of a main tower of a cable-stayed bridge, the main tower is used as a bridge core bearing structure, has the characteristics of high height, changeable section and long construction period, and has strict requirements on climbing stability, construction precision and intelligent level of a template system. When the traditional hydraulic climbing formwork construction technology is adapted to complex construction scenes of a main tower of a cable-stayed bridge, the technical limitations of low automation degree, high safety risk, poor maintenance effect and the like exist, and the development requirements of high efficiency, accuracy and wisdom of modern bridge construction are difficult to meet. The traditional hydraulic climbing formwork construction relies on manual operation of a hydraulic oil pipe, the parameters such as displacement, load and the like of a frame body are required to be monitored manually in the climbing process, the efficiency is low, the frame body is inclined and even a climbing accident is caused easily due to human judgment errors, a buried part system is anchored by a single bolt, and the hidden danger of instability of the frame body is easily caused when the buried part system faces to the vertical load and the horizontal wind load which continuously change in the main tower construction. In addition, the traditional process lacks an intelligent curing means, namely manual watering and curing are needed after the concrete of the main tower is poured, curing humidity and temperature are difficult to accurately control, particularly in a high-altitude and high-wind environment, concrete is prone to crack due to too fast water loss to affect structural strength, data of all links (such as template installation, hydraulic debugging and curing monitoring) of construction are isolated, whole-course visual management and control cannot be achieved, and construction quality tracing and risk early warning are not facilitated. Disclosure of Invention Aiming at the situation, the invention provides an intelligent hydraulic climbing formwork construction process for a main tower of a cable-stayed bridge in order to overcome the defects of the prior art. The intelligent hydraulic climbing formwork construction process of the main tower of the cable-stayed bridge comprises the following steps of pouring concrete after embedding an embedded part system to complete foundation construction; Step two, assembling the climbing formwork, preassembling a frame body, lifting and installing a template unit, connecting a hydraulic oil pipe and a centralized pump station, arranging an intelligent control system and an intelligent maintenance system, and debugging parameters of each system; Step three, climbing for the first time, detecting construction parameters through an intelligent control system, starting a centralized pump station, and locking the guide rail and fixing the template after climbing in place by utilizing the cooperative action of an upper reversing box, a lower reversing box and a hydraulic oil pipe to realize the alternate lifting of the guide rail and the frame body; circularly constructing, installing a buried part system after binding steel bars, then closing the mould to pour concrete, then continuously climbing after removing the mould, and repeating the operation until the bridge tower construction is completed; And fifthly, dismantling the creeping formwork, and dismantling the intelligent maintenance system, the intelligent control system external equipment, the hydraulic oil pipe, the template, the frame body and the embedded part system in sequence according to the reverse installation sequence. Further, the borehole system includes: the embedded part plate, the embedded part hanging seat, the climbing cone, the stress bolt and the high-strength screw rod; the embedded part plate is made of a steel plate, a high-strength screw rod is fixedly arranged on one side of the embedded part plate, and a climbing cone is connected to the high-strength screw rod through threads; One end of the climbing cone far away from the high-strength screw rod is connected with a stressed bolt through threads; one end of the stress bolt is connected with the internal thread of the climbing cone, and the other end of the stress bolt penetrates through the frame body connecting plate and is fastened by a nut, so that the anchoring of the frame body and the bridge tower is realized; the embedded part hanging seat is L-shaped, and the horizontal section is fixed with the top surface of the embedded part plate through a high-s