WO2022048321A1 - Coffrage de levage de type escalade à simple face de tour en acier et application dans une tour de câble en acier à colonne unique inclinée - Google Patents

Coffrage de levage de type escalade à simple face de tour en acier et application dans une tour de câble en acier à colonne unique inclinée Download PDF

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Publication number
WO2022048321A1
WO2022048321A1 PCT/CN2021/106333 CN2021106333W WO2022048321A1 WO 2022048321 A1 WO2022048321 A1 WO 2022048321A1 CN 2021106333 W CN2021106333 W CN 2021106333W WO 2022048321 A1 WO2022048321 A1 WO 2022048321A1
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WIPO (PCT)
Prior art keywords
climbing
lifting
steel tower
hoisting
self
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PCT/CN2021/106333
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English (en)
Chinese (zh)
Inventor
卢冠楠
柴伟
肖旭
肖向荣
郭剑飞
周罡
赵富立
刘炜
Original Assignee
中交路桥华南工程有限公司
中交路桥建设有限公司
武汉武桥交通装备技术有限公司
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Application filed by 中交路桥华南工程有限公司, 中交路桥建设有限公司, 武汉武桥交通装备技术有限公司 filed Critical 中交路桥华南工程有限公司
Publication of WO2022048321A1 publication Critical patent/WO2022048321A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

Definitions

  • the present application relates to the field of bridge construction, in particular to a single-side climbing type lifting formwork of a steel tower and its application in an inclined single-column type steel cable tower.
  • the tower-column segment docking control of the inclined cable tower adopts a tower crane hoisting process, and the deviation of the tower-column docking axis can be controlled within 1/3000 of the tower height by using the relevant existing process.
  • the main disadvantage of using the method of tower crane hoisting to control the docking of inclined towers is that it is difficult to operate.
  • the high-altitude hoisting of the tower crane will cause the tower column to sway under the action of wind load.
  • Using the chain hoist to control the inclination of the tower column is prone to errors. Since the tower crane needs to be attached to the wall on the installed section, the installed tower column will be horizontal due to The action of the force produces deformation, which further adds to the misalignment of the docking. After the segments are temporarily connected, it is necessary to adjust the corbel and the jack to make the catch meet the requirements. At this time, it is very difficult to control the axis deviation to within 1/3000 of the tower height.
  • the hoisting construction of large-scale steel tower column sections is a high-altitude hoisting operation, especially in some areas with complex geological conditions, the foundation cannot meet the hoisting requirements.
  • the hoisting construction is safe, and safety accidents such as collapse are prone to occur.
  • the purpose of the present application is to at least partially overcome the defects of the prior art, to provide a lifting formwork with convenient operation and high construction efficiency, and to apply the lifting formwork to an inclined single-column steel cable tower.
  • the first is a single-side climbing type lifting formwork of a steel tower, which includes a self-climbing system, a lifting system attached to the self-climbing system, and a lifting power system installed on the lifting system;
  • the self-climbing system includes an anchoring seat embedded in one side of the surface of the structure, a track attached to the anchoring seat, and a climbing component hooked on the track;
  • the hoisting system is attached to the climbing assembly, and a jib is extended to the opposite side of the fixed surface of the self-climbing system;
  • the hoisting power system includes a power assembly disposed on the jib to perform hoisting and translation processes.
  • the lifting formwork of the present application has a small self-weight, the center of gravity fits the center of gravity of the cable tower, the distance from the control point of the hoisting segment is small, and the operation is convenient, which is beneficial to the linear control of the steel tower;
  • the lifting formwork of the present application can use the cable tower itself for self-climbing, without the need for a separate foundation and floor support, while reducing the height of the lifting formwork and solving the problem of ultra-high hoisting, with strong safety and construction efficiency high;
  • the lifting formwork of the present application adopts a single-side climbing design to realize the adaptability of the climbing system to steel towers with different appearances, and is applied to vertical steel towers, inclined steel towers and even variable-section steel towers to meet construction requirements;
  • the lifting formwork of the present application adopts a single-side climbing design to minimize the degree of interference with other components on the surface of the steel tower, and can simultaneously take into account the construction of hoisting, welding, painting, etc. on the tower column;
  • the hoisting formwork of the present application has only a vertical hoisting process and a translation process during hoisting, the hoisting construction has no amplitude change, and the hoisting process is less difficult to control.
  • FIG. 1 is a front view of the single-side climbing type lifting formwork of the steel tower of the present application.
  • FIG. 2 is a left side view of the single-side climbing type lifting formwork of the steel tower of the present application.
  • FIG. 3 is a right side view of the single-side climbing type lifting formwork of the steel tower of the present application.
  • FIG. 4 is a front view of the self-climbing system of the single-side climbing type lifting formwork of the steel tower of the present application.
  • Fig. 5 is the structural representation of the climbing frame jacking seat of the self-climbing system of the steel tower unilateral climbing type lifting formwork of the application.
  • FIG. 6 is a transverse cross-sectional view of a climbing frame jacking seat of a self-climbing system of a steel tower single-side climbing type lifting formwork of the present application.
  • FIG. 7 is a schematic structural diagram of an oil cylinder block of a self-climbing system of a single-side climbing type lifting formwork of a steel tower of the present application.
  • FIG. 8 is a schematic diagram of the application of the single-side climbing type lifting formwork of the steel tower of the present application to the installation of the inclined single-column type cable tower.
  • the steel tower of this project has a wide bottom cross section and a narrow top cross section. Before hoisting, the steel tower is divided into 13 hoisting segments, and the weight of a single segment is 40t within 6m in height. A single-side climbing formwork of steel tower with a lifting capacity of 40t is set on the tower column to complete the installation of each tower section.
  • the steel tower single-side climbing type lifting formwork of the present application includes a self-climbing system 21 , a lifting system attached to the self-climbing system 21 , and a lifting system installed on the lifting system.
  • Heavy power system of which,
  • the self-climbing system 21 includes an anchor seat 211 embedded in one side of the surface of the structure, a track 212 attached to the anchor seat 211, and a climbing assembly 213 hooked on the track 212;
  • the hoisting system is attached to the climbing assembly 213, and a jib 2221a extends to the opposite side of the fixed surface of the self-climbing system 21;
  • the hoisting power system includes power components arranged on the jib 2221a to perform hoisting and translation processes.
  • the lifting system includes a climbing frame 221 bolted to the self-climbing system 21 , a lifting main beam 222 arranged on the top of the climbing frame 221 , and a lifting beam 222 arranged above the lifting main beam 222 .
  • the heavy crane 223 and the front legs 224 supported below the main hoisting beam 222 and anchored on the opposite side of the fixed surface of the self-climbing system 21 .
  • the climbing frame 221 adopts a truss structure, including two first group of vertical rods directly bolted to the self-climbing system 21, and directly connected with the first group of vertical rods at the lower ends thereof
  • the second group of vertical rods forming an inverted triangle also includes a group of inclined rods of the climbing frame connected to the inverted triangle to expand the supporting surface of the top of the climbing frame 221 upward, and the top of the inclined rod group of the climbing frame constitutes the upper part of the supporting surface of the top of the climbing frame 221.
  • the apex angle, in the apex angle, the lower connecting seat 2212 of the support seat is used for setting the lower connecting seat 2212 of the support seat, and the side farther away from the steel tower 1 is used for installing the lower connecting seat 2211 of the rotating support.
  • the main hoisting beam 222 needs to be kept level, especially when passing through the curvature change point of the surface of the steel tower 1, the present application provides a rotating support between the main hoisting beam 222 and the climbing frame 221 to avoid Maintain the horizontal state of the lifting main beam 222.
  • each rod of the climbing frame 221 adopts a box-shaped structure with different cross-sectional dimensions.
  • the rods used by the climbing frame 221 are designed in modules, and the modules are connected by flanges.
  • the lifting main beam 222 includes a pair of main longitudinal beams 2221 arranged in parallel, and a pair of transverse beams 2227 respectively orthogonally connected to the two ends of the main longitudinal beam 2221;
  • a connecting seat 2222 on the rotating support, a connecting seat 2223 on the supporting seat and a leveling track 2224 are arranged from the connecting end to the boom end in sequence.
  • the upper connecting seat 2222 of the rotating support and the lower connecting seat 2211 of the rotating support of the climbing frame 221 are bolted to form a rotating support.
  • a support seat is formed after a gasket is arranged between the upper connecting seat 2223 of the supporting seat and the lower connecting seat 2212 of the supporting seat of the climbing frame 221 as required.
  • the rotating support and the support base are used to define the installation angle between the main lifting beam 222 and the climbing frame 221 .
  • the top surface of the main longitudinal beam 2221 is provided with an anti-hook rail 2225 for the crane 223 to translate on the main lifting beam 222 .
  • the width D4 of the beam 2227 is greater than the lateral width of the structure to be lifted. In this embodiment, the width D4 of the beam 2227 needs to be greater than the cross section of the bottom of the steel tower 1 width.
  • the lifting main beam 222 is the main force-bearing structure of the single-side climbing type lifting formwork of the steel tower. Longitudinal ribs and diaphragms are provided inside. Considering the convenience of transportation, flange connection is adopted between the main longitudinal beam 2221 and the transverse beam 2227.
  • the hoisting crane 223 includes a mobile trolley 2231 that transfers the power output from the hoist 23 as one of the power components to control the hoisting hook 2234, a crane main beam 2232 arranged perpendicular to the main longitudinal beam 2221, and a connection The crane main beam 2232 and the crane inclined rod 2233 of the main longitudinal beam 2221.
  • the mobile trolley 2231 is erected on the main beam 2232 of the crane.
  • the mobile trolley 2231 is composed of a fixed pulley block. The wire ropes drawn from the hoist 23 at the center position of the crane inclined rods 2233 on both sides respectively bypass the mobile trolley 2231.
  • the dual hoisting power form is formed, which is convenient for controlling the lowering and lifting of the hoisting hook 2234, and also facilitates the precise adjustment of the continuous steel tower segment 12 in the process of the steel tower segment docking.
  • the main beam 2232 of the crane and the inclined rods 2233 of the crane form a gantry structure, and each rod adopts a box beam structure with different cross-sectional dimensions.
  • the main beam 2232 of the crane is provided with a traverse cylinder 2235, and the mobile trolley 2231 is driven by the cylinder 2235 to traverse on the main beam 2232 of the crane, so as to be straight before the vertical lifting of the steel tower segment. to the lifting position.
  • the bottom of the crane slant rod 2233 is hooked on the hook rail 2225 on the top surface of the main longitudinal beam 2221.
  • the crane crane 223 is integrally attached to the The longitudinal movement is realized on the main longitudinal beam 2221 .
  • the ends of the two main longitudinal beams 2221 are provided with anti-collision seats.
  • the front legs 224 include a pair of upper legs 2241 hooked on the main longitudinal beams 2221 to level the track 2224 respectively, and the upper legs 2241 are connected to the upper legs and anchored to the steel tower. 1 surface lower outrigger anchor assembly 2242, and outrigger cylinder 2243 that drives the front outrigger 224 to translate along the leveling track 2224.
  • the length of the leveling track 2224 is such that the front legs 224 assist the climbing frame 221 to support the hoisting main beam 222, which depends on the variation range of the cross-sectional size of the steel cable tower, for example, in
  • the cross-sectional size of the bottom of the steel tower 1 is the largest, the farthest end of the leveling rail 2224 relative to the climbing frame 221 can meet the installation requirements of the bottom section of the steel tower 1, and the cross-sectional size of the top of the steel tower 1 is the smallest.
  • the proximal end of the leveling rail 2224 relative to the climbing frame 221 can meet the installation requirements of the top section of the steel tower 1 .
  • the lower end of the front outrigger 224 needs to be anchored on the surface of the steel tower 1 through the outrigger anchoring seat, and the outrigger upper column 2241 is transferred to the outrigger lower support through the outrigger beam, and the outrigger lower support is directly connected to the steel tower. 1.
  • Surface anchoring in a preferred embodiment, a lower leg column is also provided between the outrigger lower support and the outrigger beam, and the outrigger lower column can be used to adjust the outrigger beam and the outrigger lower support. installation height difference.
  • the outrigger beam, the outrigger lower support and the outrigger lower column together constitute the outrigger lower anchor assembly 2242 .
  • the fixed connection relationship of the lower leg anchor assembly 2242 on the surface of the steel tower segment needs to be temporarily released. After locking the climbing height, the The fixed position of the under-leg anchor assembly 2242 needs to be changed to the nearest outrigger anchor. Further, the top of the upright column 2241 on the outrigger is provided with an outrigger cylinder 2243, which is used to drive the front outrigger 224 to translate on the main longitudinal beam 2221 along the leveling track 2224, and then adjust with the installation height of the front outrigger 224.
  • the main beam 222 is leveled to cooperate with the support of the climbing frame 221 to maintain the horizontal posture of the lifting main beam 222 .
  • Climbing frame 221 By pre-installing the climbing track 212 on one side of the steel tower segment, the climbing frame 221 is attached to the track 212 to achieve self-climbing through the lifting and retracting of the oil cylinder combined with the intermittent locking of the pin shaft;
  • the main hoisting beam 222 connecting each part, bears the hoisting load and transfers it to the climbing frame 221 and the front outrigger 224 during hoisting;
  • Lifting crane 223 The position of the lifting equipment, which can be moved in four directions by setting the two-way oil cylinder, which is convenient for lifting and accurate positioning of the segments;
  • Front outriggers 224 used to fix the lifting formwork and provide support when the segment is hoisted, and the front outriggers 224 to release the support when climbing.
  • the self-climbing system 21 includes an anchor seat 211 embedded in the surface of the structure, a track 212 attached to the anchor seat 211, and a climbing assembly 213 hooked on the track 212; the The climbing assembly 213 is provided with an anti-hook portion that is clearance fit with the rail 212 , and the climbing assembly 213 and the rail 212 are fixed by pinning.
  • the anchoring seat 211 is pre-embedded on the surface of the structure with a preset vertical distance D1. Both ends of the track 212 are attached to the anchor seat 211 , and two adjacent tracks 212 are attached end to end on the same anchor seat 211 . In this embodiment, a 3m standard track is used, so the vertical distance D1 of the anchoring bases 211 adjacent to each other is also about 3m. Further, in order to meet the anchoring requirements of the above-mentioned climbing frame 221, the first group of vertical bars of the climbing frame 221 is correspondingly attached to a group of self-climbing systems 21, and each group of the self-climbing systems 21 includes 3 or 4 of the rails.
  • the center distance of the tracks 212 of the adjacent two groups of self-climbing systems 21 is 1400mm, which is adapted to the distance of the first group of vertical rods.
  • the two sets of climbing assemblies 213 on each set of self-climbing systems 21 are designed for redundancy. When the self-climbing system 21 is in normal operation, only the upper set of climbing assemblies 213 is used, and the lower set of climbing assemblies 213 is in the It is activated when the upper group of climbing assemblies 213 is disabled, or when the lifting formwork becomes unstable and falls, braking and anti-falling are realized.
  • the side of the rail 212 connected to the anchor seat 211 is defined as the back side, and the back side of the rail 212 is provided with a load-bearing shear block 2121 abutting against the anchor seat 211 and attached to the same
  • the load-bearing shear block 2121 of the upper track 212 abuts above the anchor seat 211
  • the load-bearing shear block 2121 of the lower track 212 abuts against the interior of the anchor seat 211, That is, the upper and lower ends of the same rail 212 are provided with load-bearing shear blocks 2121 respectively.
  • An anti-fall shearing block 2124 is provided on the front of the track 212 , and correspondingly, one of the climbing components 213 is provided with an anti-fall lock tongue 21312 .
  • the anti-fall shearing blocks 2124 are arranged on the front of the track 212 at a spacing of 300 mm. If rapid braking is required, the spacing of the anti-falling shear blocks 2124 should be appropriately reduced.
  • the anti-fall locking tongue 21312 is bolted on the climbing assembly 213, and its braking principle is: during the climbing process of the lifting mold frame, the front end of the anti-fall locking tongue 21312 is pushed by the lower convex surface of the anti-fall shearing block 2124, The front end of the anti-fall locking tongue 21312 is deflected downward, away from the anti-falling shear force block 2124. At this time, the anti-falling locking tongue 21312 and the anti-falling shear force block 2124 do not have a mutually contradictory locking relationship, and the climbing of the lifting formwork does not occur.
  • the front end of the anti-fall locking tongue 21312 is reset and then clamped between the two adjacent anti-falling shear blocks 2124 up and down.
  • the front end of the drop lock tongue 21312 abuts on the upper convex surface of the lower anti-fall shear force block 2124. Since the rear end of the drop lock tongue 21312 is restricted, it cannot continue to rotate.
  • the force blocks 2124 have a mutually contradictory locking relationship, and the descending of the lifting die set is stopped, thereby realizing the anti-drop effect; if the normal descending of the lifting die set is not affected by the anti-fall locking tongue 21312, the front end of the anti-fall locking tongue 21312 needs to be moved. Artificially deflected downward and locked.
  • Two sides of the rail 212 are provided with anti-hook grooves 2122 along the longitudinal direction thereof, the groove bottom 2122a of the anti-hook groove 2122 is parallel to the longitudinal direction, and the anti-hook groove 2122 is close to the front of the rail 212.
  • the first groove wall 2122b is perpendicular to the groove bottom 2122a, and the second groove wall 2122c near the back of the rail 212 intersects the groove bottom 2122a obliquely, so that the cross-sectional width of the groove bottom 2122a of the anti-hook groove 2122 is smaller than the cross-section of the groove. Width, as shown in FIG.
  • the cross-section of the anti-hook groove 2122 is a right-angled trapezoid, with a large opening and a small groove bottom 2122a.
  • the anti-hook part of the climbing assembly 213 that is clearance-fitted with the anti-hook groove 2122 includes a sliding block 213c with a cross-sectional shape similar to that of the anti-hook groove 2122, and an end connecting the sliding block 213c with the climbing block 213c.
  • the so-called clearance fit means that the shapes of the slider 213c and the anti-hook groove 2122 are basically similar, but there is a gap between the two after they are fitted.
  • the cross-sectional shape of the anti-hook groove 2122 is a right-angled trapezoid.
  • the cross-sectional shape of the slider 213c is also a right-angled trapezoid.
  • the cross-sectional shape of the slider 213c is a triangle, a trumpet, a rectangle, and the like. The way of the clearance fit can allow an offset distance between the rail 212 and the slider 213c, and allow an angle difference between the upper and lower adjacent rails 212, without affecting the safe climbing and descending of the lifting formwork.
  • the spacing D2 of the plugging pin holes 2123 is 300-400mm , correspondingly, the single movement stroke of the self-climbing system 21 is an integral multiple of the distance D2 between the plug holes 2123 .
  • the climbing assembly 213 includes a climbing frame jacking seat 2131, an oil cylinder seat 2132 connected below the climbing frame jacking seat 2131 through a jacking oil cylinder 2134, and a climbing frame guide seat 2123 arranged below the oil cylinder seat 2132.
  • Each component of the climbing assembly 213 includes a body, a connecting arm extending from the body, and the sliding block 213c disposed at the end of the connecting arm, and the connecting arm and the sliding block 213c constitute the anti-hook portion .
  • the climbing frame jacking seat 2131 includes a jacking seat body, a reverse hook portion composed of a connecting arm and a slider, and a single-pin hydraulic plug-and-pull pin provided on one of the connecting arms
  • the mechanism 21311 correspondingly, a connecting arm of the climbing frame jacking base 2131 is provided with a plug-in pin hole, and the plug-in pin hole is adapted to the plug-in pin hole 2123 of the rail 212, that is, the inner diameters of the two are similar and can pass through each other.
  • the single-pin shaft hydraulic plug-in pin structure includes a single pin shaft, a hydraulic push-pull device arranged on the exposed end of the pin shaft, and a limit frame fixed on the connecting arm.
  • the limit frame provides the attachment point of the single pin shaft in the uncoupling state, also provides the fixing place of the hydraulic push-pull device, and at the same time defines the translation trajectory of the single pin shaft.
  • the climbing frame jacking seat 2131 cannot move longitudinally along the track 212; when the single pin shaft is pulled out of the plug hole, the decoupling of the climbing frame jacking seat 2131 and the track 212 is realized. , the climbing frame jacking seat 2131 can move longitudinally along the track 212 .
  • the anti-fall locking tongue 21312 is bolted on the top of the climbing frame jacking seat 2131 .
  • the bottom of the climbing frame jacking seat 2131 is provided with a connecting ear bolted with the jacking oil cylinder 2134 .
  • the oil cylinder block 2132 includes a cylinder block body, a reverse hook portion composed of a connecting arm and a slider, and a double-pin shaft hydraulic plug mechanism 21321 provided on one of the connecting arms.
  • One connecting arm of the oil cylinder base 2132 is provided with two plugging pin holes, and the spacing between the two plugging pin holes of the same connecting arm on the oil cylinder base 2132 is adapted to the spacing of the plugging pin holes 2123 of the rail 212, and the two plugging pin holes are matched.
  • the pin-pulling holes also have similar inner diameters and can penetrate each other.
  • the double-pin shaft hydraulic plug-in pin structure includes two upper and lower parallel pin shaft groups, a hydraulic push-pull device arranged on the exposed end of the pin shaft group, and a limit frame fixed on the connecting arm.
  • the limit frame provides the attachment point of the pin shaft group in the uncoupled state, also provides the fixing place of the hydraulic push-pull device, and at the same time defines the translation trajectory of the pin shaft group.
  • the oil cylinder seat 2132 cannot move longitudinally along the track 212; after the pin shaft group is pulled out of the plug-in pin hole, the decoupling of the oil cylinder seat 2132 and the track 212 is realized, and at this time, the oil cylinder seat 2132 can move longitudinally along the track 212 .
  • the top of the cylinder seat 2132 is provided with a connecting lug that is bolted to the jacking cylinder 2134 .
  • the oil cylinder base 2132 realizes a more stable connection with the rail 212 through the pin shaft group, and provides a more stable boosting reaction force for the climbing of the lifting formwork.
  • the guide base 2123 of the climbing frame includes a guide base body, an anti-hook portion composed of a connecting arm and a slider, and one connecting arm is provided with a plug-in pin hole, and the plug-in pin hole is connected with the insertion and removal of the rail 212.
  • Pin holes 2123 fit.
  • the thickness of the climbing frame guide seat 2123 relative to the anchor seat 211 is similar to the thickness of the climbing frame jacking seat 2131 relative to the anchor seat 211, and the thickness of the oil cylinder seat 2132 relative to the anchor seat 211 is relatively small.
  • the guide base 2123 and the front face of the climbing frame jacking base 2131 are respectively set as bolting surfaces, both of which are bolted to the climbing frame 221 to support the climbing frame 221, and prevent the climbing frame 221 from interfering with the oil cylinder block 2132, resulting in The climb of the cylinder block 2132 is hindered.
  • the inner diameter of the plug-in pin hole 2123 is 0.5-1 mm larger than the outer diameter of the single pin shaft and the pin shaft group.
  • the climbing frame jacking seat 2131 is connected with the track 212, and the oil cylinder seat 2132 and the track 212 are disconnected;
  • the oil cylinder base 2132 is connected with the track 212, and the climbing frame jacking seat 2131 is disconnected from the track 212 to prepare for the next jacking stroke.
  • the climbing frame jacking seat 2131 is connected with the track 212, and the oil cylinder seat 2132 and the track 212 are disconnected;
  • the single-side climbing type lifting formwork of the steel tower including the self-climbing system 21 uses hydraulic equipment in many places, and each hydraulic equipment can be controlled uniformly through the electrical system.
  • the hydraulic system used in this application is an open system, that is, after the hydraulic pump sucks out the hydraulic oil from the oil tank, it is output to each actuator, and the return oil of each actuator is directly returned to the oil tank, which has a simple structure and good heat dissipation and oil filtering conditions.
  • the hydraulic system of the lifting formwork is responsible for the lifting and climbing of the whole machine, the vertical movement of the crane 223, the lateral movement of the lifting point of the crane 223, the action of the oil cylinder of the front outrigger 224 and the action of the plug-in mechanism of the whole equipment.
  • the hydraulic station is installed on the working platform in the middle of the climbing frame 221 to provide pressure oil for each oil cylinder.
  • the electrical system includes three major systems: the electrical control system of the whole machine mechanism, the safety monitoring system and the remote video monitoring system.
  • the electrical control system of the whole machine mechanism the control objects are all the working mechanisms of the whole machine, including the power control system, the lifting of the climbing frame 221, the vertical and horizontal movement of the crane 223, etc., with high safety, reliability and complete prevention of misoperation It can meet the requirements of large-scale and stable speed regulation of the lifting mold base, and can also meet the high-precision synchronous control of the lifting process of the climbing frame 221.
  • the control part of the system is realized by Siemens programmable controller, which has the characteristics of advanced control, high reliability, and convenient programming and modification.
  • PLC is the core of the entire speed control system, responsible for the logic control of all input and output control points of the system. PLC adopts AC220V power supply. PLC is mainly used to receive the main command signal, send out control signals of each mechanism, and control the actions of each mechanism.
  • Safety monitoring system In addition to the lifting weight limiter and the sensors, limit switches and detection switches set in the aforementioned mechanisms, the system is also equipped with a wind speed sensor (which can issue an audible and visual alarm signal when the ambient wind speed exceeds the limit, and restrict the operation of each mechanism). ), stress monitoring device (stress sensors are installed at each monitoring point of the whole machine, when abnormal stress occurs, the operation of each mechanism is automatically restricted, and an alarm signal is issued).
  • a wind speed sensor which can issue an audible and visual alarm signal when the ambient wind speed exceeds the limit, and restrict the operation of each mechanism.
  • stress monitoring device stress sensors are installed at each monitoring point of the whole machine, when abnormal stress occurs, the operation of each mechanism is automatically restricted, and an alarm signal is issued).
  • the main engine of the safety monitoring system is set in the crane operation room, and is connected to the main controller on the machine through the communication bus to collect, display and record the real-time status of the various mechanisms, sensors and safety protection devices of the whole machine.
  • the security monitoring host uploads the operation data to the cloud through the wireless communication module, which can be queried in real time through the Internet.
  • the crane is also equipped with a video monitoring system, and the camera takes real-time pictures of the monitoring points such as the winch 23, the crane 223, the front outrigger 224, the lifting hook 2234, and the self-climbing system 21 respectively.
  • the host (hard disk video recorder) and monitor are installed in the operating room.
  • the hoisting power system that is, the above-mentioned hoist 23, various hydraulic equipment and electrical systems are configured simultaneously with the installation of the hoisting system.
  • the inclined top surface 1a refers to a side surface where the inclined steel tower 1 forms a maximum angle with the ground; the inclined top surface 1b refers to a side surface where the inclined steel tower 1 forms a minimum angle with the ground.
  • the inclined top surface 1a The opposite side is the inclined plane 1b.
  • the projected plane of the inclined steel tower 1 on the ground is larger than the cross section of the bottom of the steel tower 1 .
  • the self-elevating type lifting formwork adopts the steel tower single-side climbing type lifting formwork of the present application, and the steel tower single-side climbing type lifting formwork is fixed to the installed steel tower segment 11 by the above-mentioned installation steps. the top of.
  • the installed steel tower segment 11 is docked on the ground by a crane in advance, and the height of the installed steel tower segment 11 needs to meet the installation requirements of the track 212 of the self-climbing system 21, that is, the installed steel tower segment 11
  • the height is greater than the total length H of the track 212 constituting the self-climbing system 21 , specifically, the total length H of the track 212 in this example is in the range of 9-12 m. Further, as shown in FIG.
  • the rail 212 is installed on the inclined top surface 1a of the inclined steel tower, correspondingly, a boom 2221a extends from the inclined top surface 1b, and the boom 2221a extends below the boom 2221a. Will serve as the hoisting position for the continued steel tower segment 12 .
  • the inclined steel tower is inclined in the transverse direction of the bridge, its inclined elevation 1a and inclined plane 1b are located in the transverse direction; if the inclined steel tower is inclined in the longitudinal direction of the bridge, the other inclined elevations 1a and 1b are located in the transverse direction.
  • the inclination direction of the inclined steel tower is not parallel or perpendicular to the main beam of the bridge, its inclined top surface 1a and inclined top surface 1b are on the axis of the steel tower itself.
  • One side of the inclined plane 1b is used as the lifting position of the continuous steel tower section 12. If the lifting position is on land and the ground foundation meets the requirements, the continuous steel tower section 12 can be transported to the lower part of the boom 2221a by vehicle. If the hoisting position is on the river or on the land with poor ground foundation, a transfer platform can be set up or the construction trestle can be extended to the hoisting position. If the river condition is good, a barge can be used to provide a hoisting platform.
  • the hoisting process of the continued steel tower segment 12 is as follows:
  • the transfer continuation steel tower segment 12 is positioned directly below the boom 2221a;
  • the continuous steel tower segment 12 is vertically lifted by the boom 2221a to a preset height above the top of the installed steel tower segment 11; specifically, the crane 223 is longitudinally moved to the boom end, and then adjusted The lateral position of the mobile trolley 2231 of the hoisting crane 223 is directly opposite to the continuous steel tower section 12, and the lifting hook 2234 is lowered, and the lifting hook 2234 is connected to the hanging point of the continuous steel tower section 12.
  • the continuous steel tower segment 12 is lifted by the lifting power system.
  • the continued steel tower segment 12 is first lifted to a height slightly higher than the top of the installed steel tower segment 11 . Therefore, the self-elevating formwork is used for the translation of the continued steel tower segment 12 inside.
  • the height of the channel is greater than the height of the continuous steel tower segment 12, and the channel for the translation of the continuous steel tower segment 12 is composed of the main lifting beam 222, the front legs 224, the crane 223 and the installed steel tower.
  • the top surface of the segment 11 is defined, the height of the channel refers to the vertical distance from the top surface of the installed steel tower segment 11 to the moving trolley 2231 of the crane 223, and the height of the channel is sufficient to accommodate a continuous steel Working height of tower segment 12 and hoist hook 2234.
  • the continuous steel tower segment 12 is connected according to the linear butt of the inclined tower segment; the mobile trolley 2231 is precisely adjusted by the two hoists 23 of the crane 223, so that the continuous steel tower segment 12 can be connected at the preset connection
  • the location realizes drop frame and welding to complete the installation process of one continuous steel tower segment 12 .
  • the self-elevating formwork uses its self-climbing system 21 to climb to the next station to install the next continuous steel tower segment 12; refer to The climbing method of the self-climbing system 21 described above drives the self-elevating formwork to climb along the steel tower 1, and executes step (3) cyclically until the hoisting and docking of all the continuous steel tower segments 12 are completed.
  • the continuous steel tower segment 12 is installed according to the line shape of the inclined tower segment, and the crane frame body of the self-elevating formwork is kept horizontal;
  • the installation angle between the climbing frame 221 and the lifting main beam 222 is adjusted by increasing or decreasing the number of spacers of the support seat.
  • the position of the front outrigger 224 on the main hoisting beam 222 is adjusted by the outrigger cylinder 2243 on the bottom surface of the main hoisting beam 222, and then the lower end of the front outrigger 224 is connected with The surface of the steel tower 1 is connected, and finally the overall height of the front legs 224 is adjusted to level the main lifting beam 222 .
  • the single-side climbing type lifting formwork of the steel tower of the present application is applied to the inclined single-column steel cable tower. It can improve the height of the formwork, and also solve the problem of ultra-high hoisting, with strong safety and high construction efficiency.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

L'invention concerne un coffrage de levage de type escalade à simple face de tour en acier, comprenant un système d'auto-escalade (21), un système de levage fixé au système d'auto-escalade (21), et un système de force de levage monté sur le système de levage; le système d'auto-escalade (21) comprend une base d'ancrage (211) pré-enterrée sur un côté de la surface de la structure, une piste (212) fixée sur la base d'ancrage (211), et un ensemble d'escalade (213) contre-accroché sur la piste (212); le système de levage est fixé sur l'ensemble d'escalade (213), et étend une flèche (2221a) vers le côté opposé de la surface de fixation du système d'auto-escalade (21); et le système de force de levage comprend un ensemble de force permettant d'exécuter des processus de levage et de translation disposés sur la flèche (2221a). L'invention concerne également un procédé de montage d'une tour en acier à colonne unique inclinée, qui utilise le présent coffrage de levage de type escalade à simple face de tour en acier pour mettre en œuvre le montage.
PCT/CN2021/106333 2020-09-04 2021-07-14 Coffrage de levage de type escalade à simple face de tour en acier et application dans une tour de câble en acier à colonne unique inclinée WO2022048321A1 (fr)

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CN115354848A (zh) * 2022-07-12 2022-11-18 华中科技大学 一种顶推力实时感知预警的爬升模架滚动限位装置及方法
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CN115467505A (zh) * 2022-07-28 2022-12-13 中国一冶集团有限公司 一种架空层爬架爬升系统
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CN116427699A (zh) * 2023-06-13 2023-07-14 上海建工一建集团有限公司 核心筒斜向收分结构的施工方法及整体爬升钢平台模架
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CN112681144B (zh) * 2020-12-21 2023-08-18 中交路桥华南工程有限公司 钢索塔的自爬式安装方法

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CN115354848A (zh) * 2022-07-12 2022-11-18 华中科技大学 一种顶推力实时感知预警的爬升模架滚动限位装置及方法
CN115467505A (zh) * 2022-07-28 2022-12-13 中国一冶集团有限公司 一种架空层爬架爬升系统
CN115418962A (zh) * 2022-09-26 2022-12-02 中建八局发展建设有限公司 一种斜拉桥钢混结合段安装定位系统
CN115478485A (zh) * 2022-10-17 2022-12-16 中建八局发展建设有限公司 一种斜拉桥主塔钢节段横拼安装装置和方法
CN115492369A (zh) * 2022-11-02 2022-12-20 中国水利水电第七工程局有限公司 一种整体式变截面空心墩爬模
CN115492369B (zh) * 2022-11-02 2023-06-16 中国水利水电第七工程局有限公司 一种整体式变截面空心墩爬模
CN115560728A (zh) * 2022-12-07 2023-01-03 北京城建华晟交通建设有限公司 一种柱板式空心高墩施工液压爬架行程均衡性监测设备
CN116427699A (zh) * 2023-06-13 2023-07-14 上海建工一建集团有限公司 核心筒斜向收分结构的施工方法及整体爬升钢平台模架
CN116427699B (zh) * 2023-06-13 2023-08-25 上海建工一建集团有限公司 核心筒斜向收分结构的施工方法及整体爬升钢平台模架
CN117604921A (zh) * 2024-01-23 2024-02-27 贵州省公路工程集团有限公司 一种钢桁腹杆-混凝土组合拱桥中箱底板现浇纵移支架
CN117604921B (zh) * 2024-01-23 2024-03-29 贵州省公路工程集团有限公司 一种钢桁腹杆-混凝土组合拱桥中箱底板现浇纵移支架

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