CN-117552349-B - Construction method for large-span water conservancy aqueduct

CN117552349BCN 117552349 BCN117552349 BCN 117552349BCN-117552349-B

Abstract

The invention discloses a construction method for a large-span water conservancy aqueduct, which comprises the following steps of S1, lifting a main support oil cylinder to enable a aqueduct making machine to reach a aqueduct making elevation position, converting into a heavy-load pouring mode, enabling an inner mould system to move forward into an outer mould system and move forward in place, opening the inner mould system, pouring concrete to form the aqueduct, curing the concrete, S2, demoulding the aqueduct, namely, after the concrete is solidified, contracting the inner mould system, dismantling an end mould, enabling the main support oil cylinder to fall back, enabling a main frame and an outer mould system to move downwards for demoulding, S3, opening the outer mould system, removing center seam bolts of the bottom of an outer rib and a bottom mould of the outer mould system, operating a pump station to retract the rotary oil cylinder, enabling the outer mould system to rotate for opening, and avoiding a groove pier.

Inventors

HOU XIAOJUN
LIU SHUXIN
YU XIANGJUN
DENG LIJUN
REN HAIFENG
SONG FEI
ZHOU ZHIGUO
LI ZHILONG
BAI KANG
GUO WEI
REN JIANMING
DAI YU
WEI SEN
LI JUNCHAO
GAO JIANHUA
CUI RUILING
CHEN WEN
QU CHANGLI
CHENG BO
LI RUIPENG
WANG QI
NIU QINGLIN
LI XIAOQING
HAN YONGKANG
JIA YAODONG
WANG XUEPENG
ZHANG JUNYAN
CHENG FEI
ZHANG ZHIHUA
HUANG WEI
CHEN DELI
LIU FEI

Assignees

中国水利水电第十四工程局有限公司
郑州新大方重工科技有限公司

Dates

Publication Date: 20260512
Application Date: 20240109

Claims (8)

1. The construction method for the large-span water conservancy aqueduct is characterized by comprising a main frame with two spans and half lengths, wherein the main frame comprises a bearing main beam positioned in the middle, and front guide beams and rear guide beams are respectively arranged at two ends of the bearing main beam; The main frame is supported on the support leg of the bridge pier, and the support leg comprises a front auxiliary support leg for supporting the front guide beam, a main support leg for supporting the bearing main beam and a rear auxiliary support leg for supporting the rear guide beam; the front auxiliary supporting leg comprises a supporting beam, a hanging device connected with the front guide beam is arranged at the top of the supporting beam, the supporting beam is connected with an upper beam through a rotating shaft, a hinged support assembly is arranged at the bottom of the upper beam, a fixed upright post is arranged at the bottom of the hinged support assembly, a front supporting cylinder is arranged at the bottom of the fixed upright post, and a front anchoring longitudinal beam capable of being connected with a pier is arranged at the bottom of the front supporting cylinder; The main support leg comprises a first main support leg and a second main support leg which are consistent in structure, the main support leg comprises a main cross beam, a main support bracket is arranged on the main cross beam, a main sliding seat is arranged on the main support bracket, a hooking device which is hooked with the bottom of the main frame is arranged on the main sliding seat, a main traversing cylinder is arranged between the main cross beam and the main support bracket, a main support leg upright post is arranged at the bottom of the main cross beam, the bottom of the main support leg upright post is supported on a pier through the main support cylinder, a longitudinal sliding shoe which is in pin joint with a pushing track is arranged on the side wall of the main sliding seat, and a main longitudinal sliding cylinder is arranged between the longitudinal sliding shoe and the main support bracket; The rear auxiliary supporting leg comprises a rear cross beam, a rear supporting bracket is arranged on the rear cross beam, a rear sliding seat is arranged on the rear supporting bracket, a rear transverse moving oil cylinder is arranged between the rear cross beam and the rear supporting bracket, a detachable rear distribution beam is arranged at the bottom of the rear cross beam, a rear supporting oil cylinder is arranged at the bottom of the rear distribution beam, a detachable rear upright post is arranged at the bottom of the rear cross beam, a rear supporting oil cylinder is arranged at the bottom of the rear upright post, and a rear anchoring longitudinal beam capable of being connected with a pier is arranged at the bottom of the rear supporting oil cylinder; a hoist reciprocally movable along the main frame; The outer die system is positioned in the outer rib hanging system, the outer die system comprises a bottom die arranged on the bottom surface of the outer rib, and an abdomen die connected with the inner wall of the outer rib through an adjustable supporting system, and the bottom of the abdomen die is connected with the bottom die; The internal mold system comprises an internal girder system, an internal mold plate system and a supporting rod assembly, wherein the internal girder system comprises an internal girder, an internal girder supporting leg outer sleeve column is arranged at the bottom of the internal girder, an internal girder supporting leg inner sleeve column is arranged in the internal girder supporting leg outer sleeve column, a traveling wheel box is arranged at the bottom of the internal girder supporting leg inner sleeve column, a stand column lifting cylinder is arranged between the internal girder and the internal girder supporting leg inner sleeve column, the supporting rod assembly is positioned between the internal girder and a main frame, the internal mold plate system comprises an internal mold plate, an internal mold support outer sleeve is arranged in the internal mold plate, the internal mold support outer sleeve is connected with an internal mold support inner sleeve through an internal mold traversing cylinder and an adjustable supporting rod, the internal mold support inner sleeve is arranged on the internal girder, and an internal mold overturning cylinder is also arranged in the internal mold plate; The construction method comprises the following steps: S1, pouring an aqueduct, namely lifting a main supporting oil cylinder to enable a grooving machine to reach the groove making elevation position, converting into a heavy-load pouring mode, enabling an inner mold system to move forward into an outer mold system and move forward in place, opening the inner mold system, pouring concrete to form the aqueduct, and curing the concrete; S2, demoulding by adopting an aqueduct, namely after the concrete is solidified, contracting the inner mould system, dismantling the end mould, falling back the main support oil cylinder, and integrally moving the main frame and the outer mould system downwards for demoulding; s3, opening the outer mold system, namely removing center seam bolts of the bottom of the outer rib and the bottom mold of the outer mold system, operating the pump station to retract the rotary oil cylinder, and enabling the outer mold system to rotate and open so as to avoid the groove pier; S4, the main frame moves forwards once, namely when the walking route is a straight line, the electric hoist walks behind the main frame, and the main longitudinal moving oil cylinders on the first main supporting leg and the second main supporting leg act to enable the whole machine to move forwards for half a span until the front auxiliary supporting leg reaches the next pier top in front and is supported; s5, the second main supporting leg moves forward, namely the rear auxiliary supporting leg is supported on the aqueduct, the second main supporting leg is emptied, and the second main supporting leg moves forward by itself to span to the next pier top in front and is supported; S6, the first main support leg moves forward, namely the second main support leg supports the main beam, the first main support leg is emptied, the first main support leg moves forward by itself to span to the next pier top in front and supports the next pier top, and the front auxiliary support leg is emptied; s7, the main frame moves forward for the second time, namely, a main longitudinal moving oil cylinder on the first main supporting leg and the second main supporting leg acts to drive the main frame to move forward for half-span; s8, operating the pump station outer rib rotating cylinder to carry the outer rib and the outer die to fold, and connecting the middle seam of the bottom die of the outer die system and the middle seam bolts at the bottom of the outer rib; s9, repeating the steps S1-S8 to finish the construction of the residual span of the aqueduct.
2. The construction method for a large-span water conservancy aqueduct according to claim 1, wherein in the step S1, the construction method further comprises the steps of binding a bottom plate and web reinforcement cage, binding a top plate reinforcement, installing a top plate template and installing an end die.
3. The construction method for the large-span water conservancy aqueduct according to claim 2, wherein in the step S1, the internal mold system is moved by a moving wheel box, the moving wheel box is driven by a motor, and a track for moving the moving wheel box is arranged between the bound roof steel bars.
4. The construction method for a large-span water conservancy aqueduct according to claim 1, wherein in the step S1, after the internal mold system is advanced in place, the internal mold system is positioned by an adjustable stay bar.
5. The construction method for a large-span hydraulic aqueduct according to claim 1, wherein in the step S2, the internal mold system is contracted by a column lift cylinder.
6. The construction method for a large-span water conservancy aqueduct according to claim 1, wherein the S4 further comprises the following steps for curve walking: S41, taking the central line of a main support bracket of the second main support leg as a rotating shaft, and driving a main traversing oil cylinder of the first main support leg to carry a main frame to traverse a curve for a certain distance; s42, taking the central line of the main support bracket of the first main support leg as a rotating shaft, and driving the main traversing cylinder of the second main support leg to carry the main frame to traverse a certain distance to the outer side of the curve; S43, repeating the steps S41 and S42, so that the center line of the main frame is overlapped with the center line of the front auxiliary supporting leg at the front pier pivot; s44, the main longitudinal moving cylinders of the two main support legs act to drive the main frame to move forward to a half-span, and the front auxiliary support legs reach the front pier top support; S45, the rear transverse moving oil cylinder of the rear auxiliary supporting leg acts to enable the center line of the cross section of the rear distribution beam to coincide with the center line of the cross section of the aqueduct body.
7. The construction method for a large-span hydraulic aqueduct according to claim 6, wherein in S44, before the front auxiliary leg is supported, the angle between the supporting beam and the upper beam is adjusted until the supporting beam is perpendicular to the center line of the main frame, and the connecting line of the front supporting cylinder is perpendicular to the longitudinal center line of the pier.
8. The construction method for a large-span water conservancy aqueduct according to claim 1, wherein the step S7 is divided into three steps, namely: S71, a main longitudinal moving oil cylinder on the first main supporting leg and the second main supporting leg acts to drive the main frame to move forward by 1/4 span, and the auxiliary supporting leg is removed; s72, restarting the main longitudinal moving oil cylinders on the first main supporting leg and the second main supporting leg, and driving the main frame to move forward by 1/4 span until the next pouring position is reached; s73, the rear auxiliary supporting leg moves forward by 1/4 span.

Description

Construction method for large-span water conservancy aqueduct Technical Field The invention relates to the technical field of water conservancy aqueduct construction equipment, in particular to a construction method for a large-span water conservancy aqueduct. Background Because of the wide regions and uneven water resource distribution in China, along with the continuous development and progress of scientific technology, water diversion projects gradually become the first choice for relieving the water consumption problem in areas with water resource shortage, and aqueducts are one of main buildings in water diversion, and the construction quality, construction safety and construction progress of the aqueducts directly influence the construction of projects. Along with the great development of aqueducts in southwest areas of China, the construction conditions of large span, high groove piers and small curves of the aqueducts are complicated in geological conditions of the areas, the conventional full framing method cannot meet the construction requirements, and the aqueducts are in the structure form of large cross sections and thin walls and high webs, so that the supporting load of the tops of the groove faces is generally small, and the excessive groove face load has a certain influence on the groove body, so that a novel aqueduct mechanized construction technology capable of meeting the requirements of the large span, the high groove piers and the small curves and having small influence on the groove body is very necessary to be developed. Disclosure of Invention The invention aims to provide a construction method for a large-span water conservancy aqueduct, which is applicable to construction working conditions of large span, high-tank piers and small curves, and has less influence on a tank body in the construction process. In order to achieve the above purpose, the present invention adopts the following technical scheme: the construction method for the large-span water conservancy aqueduct uses an aqueduct construction device, wherein the aqueduct construction device comprises two-span half-length main frames, each main frame comprises a bearing main beam positioned in the middle, and front guide beams and rear guide beams are respectively arranged at two ends of the bearing main beam; The main frame is supported on the support leg of the bridge pier, and the support leg comprises a front auxiliary support leg for supporting the front guide beam, a main support leg for supporting the bearing main beam and a rear auxiliary support leg for supporting the rear guide beam; the front auxiliary supporting leg comprises a supporting beam, a hanging device connected with the front guide beam is arranged at the top of the supporting beam, the supporting beam is connected with an upper beam through a rotating shaft, a hinged support assembly is arranged at the bottom of the upper beam, a fixed upright post is arranged at the bottom of the hinged support assembly, a front supporting cylinder is arranged at the bottom of the fixed upright post, and a front anchoring longitudinal beam capable of being connected with a pier is arranged at the bottom of the front supporting cylinder; The main support leg comprises a first main support leg and a second main support leg which are consistent in structure, the main support leg comprises a main cross beam, a main support bracket is arranged on the main cross beam, a main sliding seat is arranged on the main support bracket, a hooking device which is hooked with the bottom of the main frame is arranged on the main sliding seat, a main traversing cylinder is arranged between the main cross beam and the main support bracket, a main support leg upright post is arranged at the bottom of the main cross beam, the bottom of the main support leg upright post is supported on a pier through the main support cylinder, a longitudinal sliding shoe which is in pin joint with a pushing track is arranged on the side wall of the main sliding seat, and a main longitudinal sliding cylinder is arranged between the longitudinal sliding shoe and the main support bracket; The rear auxiliary supporting leg comprises a rear cross beam, a rear supporting bracket is arranged on the rear cross beam, a rear sliding seat is arranged on the rear supporting bracket, a rear transverse moving oil cylinder is arranged between the rear cross beam and the rear supporting bracket, a detachable rear distribution beam is arranged at the bottom of the rear cross beam, a rear supporting oil cylinder is arranged at the bottom of the rear distribution beam, a detachable rear upright post is arranged at the bottom of the rear cross beam, a rear supporting oil cylinder is arranged at the bottom of the rear upright post, and a rear anchoring longitudinal beam capable of being connected with a pier is arranged at the bottom of the rear supporting oil cylinder; a hoist reciprocally movable along the main frame; The ou