Background
The construction operation platform of the elevator shaft at the position of the existing super high-rise core tube is mainly constructed in a mode of erecting a scaffold, and the scaffold is erected to a construction layer from the bottom; the method comprises the following steps that a template is required to be laid at the upper end of a scaffold, so that workers can conveniently step on the template to carry out construction, the template at the upper end of the scaffold is required to be dismantled by the workers every time one layer of concrete is poured, then the scaffold is heightened to a construction layer, and the template is laid again; the I-steel stress layer that encorbelments needs to be done because the steel pipe strength problem of scaffold frame at every certain floor, needs the fixed steel of encorbelmenting of embedded steel bar, and manpower and materials are wasted to this kind of operating means, greatly reduced the efficiency of construction, prolonged construction cycle.
In addition, after the traditional formwork around the elevator shaft is manually dismantled, the formwork needs to be manually transferred to an upper construction layer, a reinforcing back edge and the like, or the whole elevator shaft is hoisted by using a tower crane, so that the process is dangerous, and the formwork and the reinforcing member are easy to fall off and fall down to hurt people; the work of demolising of later stage scaffold frame and steel of encorbelmenting in the super high-rise elevator shaft is very dangerous, and these dismouting work need consume a large amount of manual works simultaneously, and the work progress benefit is low, is unfavorable for project construction cost's control.
Disclosure of Invention
The invention aims to provide a multi-point elevator shaft construction lifting platform and a construction method, which have the advantages of high construction efficiency, low cost and convenience in operation, and overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a multiple spot position elevartor shaft construction lift platform, including the wall body of having constructed, install more than two sets of wall supports that attach on the wall body of having constructed symmetrically, install on every group attaches the wall support and climb a guide rail, install electric block on the upper portion of the wall body of having constructed, and electric block's couple is connected with climbing a guide rail lower extreme, fixedly connected with main truss between the top of climbing a guide rail, be fixed with a set of secondary truss perpendicularly on main truss, constitute the truss platform, it has elevartor shaft operation platform and elevator shaft template subassembly to hang respectively through wire rope in the below of truss platform.
Furthermore, each main truss is fixedly connected with more than two climbing frame guide rails.
Furthermore, a small platform for operation of the upper person is fixedly arranged on the climbing frame guide rail.
Furthermore, the elevator shaft template assembly consists of a template, a back ridge and a wall-penetrating bolt.
Meanwhile, the invention also provides a multipoint elevator shaft construction method based on the multipoint elevator shaft construction lifting platform, which comprises the following steps:
the method comprises the following steps: firstly, more than two groups of wall-attached supports are symmetrically arranged on a constructed wall body, a climbing frame guide rail is arranged on each group of wall-attached supports, an electric hoist is arranged on the upper part of the constructed wall body, and a hook of the electric hoist is connected with the lower end of the climbing frame guide rail;
step two: a main truss is fixedly connected between the tops of the climbing frame guide rails, and a group of secondary trusses are vertically fixed on the main truss to form a truss platform;
step three: respectively suspending an elevator shaft operating platform and an elevator shaft template assembly below the truss platform through steel wire ropes;
step four: a worker stands on the elevator shaft operating platform to assemble and fix the elevator shaft template component, and then the elevator shaft concrete is poured;
step five: after the elevator shaft concrete reaches the designed strength, firstly removing wall penetrating bolts on the elevator shaft formwork assembly, then removing connecting bolts between the wall attaching support and the climbing frame guide rails, finally starting all electric hoists and simultaneously lifting all the climbing frame guide rails, further driving the truss platform to be integrally lifted to the upper construction floor, and then fixedly connecting the wall attaching support and the climbing frame guide rails;
step six: and repeating the first step to the fifth step until the construction of the elevator shaft of all the floors is completed.
In the method, the elevator shaft operating platform can be used as a material transportation platform at the same time.
Due to the adoption of the technical scheme, the invention has the following advantages:
firstly, a multi-point integral lifting system is formed by arranging a truss platform, an elevator shaft operating platform and an electric hoist lifting system, and the elevator shaft can automatically climb through the electric hoist in the construction process, so that the construction efficiency of the elevator shaft is improved, the labor is saved, and the construction time is shortened;
the elevator shaft operating platform is produced industrially, so that the edge sealing performance and the stability are better, the safety and the reliability are higher, and the construction safety is ensured;
the elevator shaft operating platform can also be used as a material transporting platform, materials can be placed above the platform and integrally lifted along with the truss platform, and the transporting way and efficiency of the materials are increased;
fifthly, the elevator shaft template component can be fixed with the truss platform through the steel wire rope and integrally lifted along with the truss platform, so that manpower transportation is saved, and production benefits are improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention comprises the following steps: referring to fig. 1 and 2, a multi-point elevator shaft construction lifting platform and a construction method thereof include a constructed wall 1, more than two sets of wall-attached supports 2 are symmetrically installed on the constructed wall 1, a climbing frame guide rail 6 is installed on each set of wall-attached supports 2, an electric hoist 11 is installed on the upper portion of the constructed wall 1, a hook of the electric hoist 11 is connected with the lower end of the climbing frame guide rail 6, a main truss 3 is fixedly connected between the tops of the climbing frame guide rails 6, a set of secondary trusses 4 are vertically fixed on the main truss 3 to form a truss platform, and an elevator shaft operating platform 9 and an elevator shaft formwork assembly 8 are respectively suspended below the truss platform through a steel wire rope 7. Each main truss 3 is fixedly connected with more than two climbing frame guide rails 6, so that the main trusses 3 can obtain enough supporting strength. The climbing frame guide rail 6 is fixedly provided with a small platform 10 for operation of a person, so that manual operation is facilitated. The elevator shaft formwork assembly 8 consists of a formwork, a back ridge and a wall-penetrating bolt.
When the multipoint elevator shaft construction lifting platform is adopted for elevator shaft construction, the following steps can be adopted:
the method comprises the following steps: firstly, more than two groups of wall-attached supports 2 are symmetrically arranged on a constructed wall body 1, a climbing frame guide rail 6 is arranged on each group of wall-attached supports 2, an electric hoist 11 is arranged on the upper part of the constructed wall body 1, and a hook of the electric hoist 11 is connected with the lower end of the climbing frame guide rail 6;
step two: a main truss 3 is fixedly connected between the tops of the climbing frame guide rails 6, and a group of secondary trusses 4 are vertically fixed on the main truss 3 to form a truss platform;
step three: an elevator shaft operating platform 9 and an elevator shaft template assembly 8 are respectively suspended below the truss platform through steel wire ropes 7; the elevator shaft operating platform 9 can be used as a material transportation platform at the same time;
step four: a worker stands on the elevator shaft operating platform 9 to assemble and fix the elevator shaft template assembly 8, and then the elevator shaft concrete is poured;
step five: after the elevator shaft concrete reaches the designed strength, firstly removing the wall penetrating bolts on the elevator shaft formwork assembly 8, then removing the connecting bolts between the wall attaching support 2 and the climbing frame guide rails 6, finally starting all the electric hoists 11 and simultaneously lifting all the climbing frame guide rails 6 so as to drive the truss platform to be integrally lifted to the previous construction floor, and then fixedly connecting the wall attaching support 2 and the climbing frame guide rails 6;
step six: and repeating the first step to the fifth step until the construction of the elevator shaft of all the floors is completed.