CN115341653A - Steep and gentle slope radian mutation multi-curved-surface steel reticulated shell building structure and construction process thereof - Google Patents

Steep and gentle slope radian mutation multi-curved-surface steel reticulated shell building structure and construction process thereof Download PDF

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CN115341653A
CN115341653A CN202210779967.9A CN202210779967A CN115341653A CN 115341653 A CN115341653 A CN 115341653A CN 202210779967 A CN202210779967 A CN 202210779967A CN 115341653 A CN115341653 A CN 115341653A
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arc
steel
steel pipe
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wing
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CN115341653B (en
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迂长伟
林南
巴继庚
王振辉
梁威
张海涛
韩超
宋辉
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Beijing Construction Engineering Group Co Ltd
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Beijing Construction Engineering Group Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B1/1903—Connecting nodes specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/162—Handles to carry construction blocks

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Abstract

The application relates to a steep and gentle slope radian mutation multi-curved-surface steel latticed shell building structure and a construction process thereof, relating to the technical field of building engineering, wherein the steel latticed shell building structure comprises a front vertical wall, a left vertical wall, a right vertical wall and a roof truss; an arc-shaped large arm steel pipe which inclines upwards is fixedly arranged at the upper end of the front vertical wall, a first arc-shaped steel pipe is arranged between the left vertical wall and the arc-shaped large arm steel pipe, and a second arc-shaped steel pipe is arranged between the right vertical wall and the arc-shaped large arm steel pipe; the arc-shaped large arm steel pipe is connected with a lower arc-shaped beam and an upper arc-shaped beam, and both sides of the arc-shaped large arm steel pipe are also provided with a left wing steep slope steel reticulated shell, a right wing steep slope steel reticulated shell, a left wing gentle slope steel reticulated shell and a right wing gentle slope steel reticulated shell; the periphery of the roof truss is connected with the upper arc-shaped beam; the application also discloses a construction process for manufacturing the steel latticed shell building structure. The steel latticed shell building structure has the characteristics of large span, high communication space, few support columns and the like; the construction process in the application is efficient, safe and low in material consumption.

Description

Steep and gentle slope radian mutation multi-curved-surface steel reticulated shell building structure and construction process thereof
Technical Field
The application relates to the technical field of large public buildings, in particular to a steep and gentle slope radian mutation multi-curved-surface steel latticed shell building structure and a construction process thereof.
Background
With the continuous development of construction technology and the continuous improvement of the level of computer aided design, the nonlinear building is continuously emerged like a bamboo shoot in spring after rain; steel frame type building structures are widely used in non-linear buildings due to their high plasticity, high construction speed and good stress performance. In the field of large public buildings, the span of the steel frame type building structure is larger and larger, the modeling is more and more novel, and the structure is more and more complex. The steel frame type building structure can meet various building requirements of different spans and different supporting conditions, and can also meet various building forms in shape; common types of steel frame type building structures are steel grid structures, steel truss structures, steel cable structures, and the like. The existing steel frame type building structure is usually combined with a concrete frame building structure to form an integrated design of a structure and a curtain wall, and a steel frame type building structure rod piece is used as a supporting system and needs to be matched with the division of a curtain wall unit.
In a nonlinear steel latticed shell building structure aiming at steep and gentle slope radian sudden change multi-curved surface, a large number of supporting structures are generally required to be designed, and the visual field is influenced; the span and the through height are greatly limited; in the construction process, measures such as an ultrahigh bearing support and the like are needed or a large number of full framing scaffolds are needed to be erected, the material loss is large, the cost is high, and the installation efficiency is low.
Disclosure of Invention
The utility model provides a steep gentle slope radian sudden change multi-curved surface steel latticed shell building structure, solves a large amount of bearing structure's that steep gentle slope radian sudden change multi-curved surface building structure between large-span, high low inclined span big leads to the problem.
The application provides a steep and gentle slope radian sudden change multi-curved surface steel reticulated shell building structure adopts following technical scheme:
a steep gentle slope radian mutation multi-curved-surface steel reticulated shell building structure comprises a front vertical wall, a left vertical wall, a right vertical wall and a roof truss;
the front vertical wall is fixedly arranged on the ground, an arc-shaped large arm steel pipe which inclines upwards is fixedly arranged at the upper end of the front vertical wall, and a first supporting steel pipe is arranged between the lower end of the arc-shaped large arm steel pipe and the ground;
the lower ends of the left vertical wall and the right vertical wall are fixedly arranged on a floor of a concrete frame building structure, a first arc-shaped steel pipe is arranged between the left vertical wall and the arc-shaped large arm steel pipe, a second arc-shaped steel pipe is arranged between the right vertical wall and the arc-shaped large arm steel pipe, and second supporting steel pipes are arranged between the first arc-shaped steel pipe and the ground and between the second arc-shaped steel pipe and the ground;
the middle part of the arc-shaped large-arm steel pipe is fixedly provided with lower arc-shaped beams extending towards the left side and the right side of the arc-shaped large-arm steel pipe, the upper end of the arc-shaped large-arm steel pipe is fixedly provided with upper arc-shaped beams extending towards the left side and the right side of the arc-shaped large-arm steel pipe, a left wing steep slope steel reticulated shell is arranged between the lower arc-shaped beams and the upper arc-shaped beams positioned at the left side of the arc-shaped large-arm steel pipe, and a right wing steep slope steel reticulated shell is arranged between the lower arc-shaped beams and the upper arc-shaped beams positioned at the right side of the arc-shaped large-arm steel pipe;
a left wing gentle slope steel latticed shell is arranged between the lower arc beam positioned on the left side of the arc-shaped large arm steel pipe and the upper end of the left vertical wall and between the first arc-shaped steel pipe, and a right wing gentle slope steel latticed shell is arranged between the lower arc beam positioned on the right side of the arc-shaped large arm steel pipe and the upper end of the right vertical wall and between the second arc-shaped steel pipe;
the roof truss is fixed on the top floor of the concrete frame building structure through the roof support steel pipe, and the periphery of the roof truss is connected with the upper arc-shaped beam.
The steel latticed shell building structure is suitable for ultra-large space free-form surface steel latticed structures such as large-scale theaters, stadiums, airport terminal buildings, high-speed rail station houses and conference exhibition centers, and is matched with a concrete frame building structure to form an integral building structure after being combined; the front gate direction of the integral building structure is taken as the front direction, the corresponding position is taken as the front position or the front side position, the other opposite direction is taken as the rear position, the corresponding position is taken as the rear position or the rear side position, when the front gate is faced with the gate, the left-hand direction is taken as the left direction, the corresponding position is taken as the left position or the left side position, the right-hand direction is taken as the right direction, and the corresponding position is taken as the right position or the right side position. The directional terms used in the present application are used for convenience in describing the technical solutions in the present application, and are not used for limiting the technical solutions.
A sunken square is arranged at the front side of a concrete frame building structure matched with the steel latticed shell building structure, the ground where the front vertical wall is installed is the ground of the sunken square, and two sides of the sunken square are provided with a layer of terrace serving as a floor where the left vertical wall and the right vertical wall are installed; a first floor in the present application refers broadly to a lower floor, the height position of which is between a higher floor and the ground, rather than the divided state of floors presented by sight, and thus it may be a second floor or a third floor as an equivalent alternative. By adopting the technical scheme, the steel latticed shell building structure is mainly coated on the left side, the right side and the front side of the concrete frame building structure, the concrete frame building structure can be a multi-layer building with more than five layers, a roof truss is arranged above a top floor of the concrete frame building structure and is used as a top covering layer of the concrete frame building structure, and the roof truss is connected with a front vertical wall through an arc-shaped inclined arc-shaped large-arm steel pipe; the lower end of the arc-shaped large arm steel pipe is fixedly connected with the front vertical wall, and the first support steel pipe is arranged between the arc-shaped large arm steel pipe and the ground, so that the arc-shaped large arm steel pipe is supported, and the vertical stress and the lateral stress of the arc-shaped large arm steel pipe are borne. The upper end of the arc-shaped large-arm steel pipe extends upwards in an inclined mode and then is fixedly connected with the upper arc-shaped beam, and partial side stress is transmitted to the concrete frame building structure through the upper arc-shaped beam and the roof truss in a dispersed mode; the first arc-shaped steel pipe and the second arc-shaped steel pipe are directly supported on the ground through the second support steel pipe, two ends of the first arc-shaped steel pipe are connected with the left vertical wall and the arc-shaped large arm steel pipe, two ends of the second arc-shaped steel pipe are connected with the right vertical wall and the arc-shaped large arm steel pipe, and a stable and reliable integral three-dimensional structure is formed between the first arc-shaped steel pipe and the second arc-shaped steel pipe, so that the weight of the left-wing gentle-slope steel reticulated shell and the weight of the right-wing gentle-slope steel reticulated shell can be effectively supported; the lower arc Liang Ji is connected with the left vertical wall and the right vertical wall, is also connected with the arc large-arm steel pipe, and is also connected with the upper arc beam through the left wing steep slope steel latticed shell and the right wing steep slope steel latticed shell, so that an integral three-dimensional structure is formed with the roof truss. The stress load of the whole structure is distributed uniformly, the design of each part is scientific and reasonable, and the safety of the structure can be ensured on the premise of using the supporting structure as little as possible.
The steel latticed shell building structure in this application controls the wing region for radian sudden change free-form surface individual layer steel mesh structure, the biggest steel pipe specification is phi 900 x 48mm, left wing gentle slope steel latticed shell and right wing gentle slope steel latticed shell wholly are the space and twist reverse irregular curved surface molding, bilateral symmetry, the border is divided obviously, first arc steel pipe and second arc steel pipe are major diameter thick wall return bend, left wing abrupt slope steel latticed shell and right wing abrupt slope steel latticed shell are space individual layer slope curved surface steel mesh, the molding is graceful and graceful, mirror symmetry about, space height is big. The integral structure forms a multi-curved surface building structure with large span, high-low inclined span and large through space, the integral structure is attractive in appearance, the number of applied supporting structures is small, and the visual field is wide.
Optionally, the arc large arm steel pipe includes the gentle slope section that is located the lower extreme and the steep slope section that is located middle part and upper end, left flank gentle slope steel reticulated shell and right flank gentle slope steel reticulated shell all with gentle slope section butt joint, left flank abrupt slope steel reticulated shell and right flank abrupt slope steel reticulated shell all with abrupt slope section butt joint.
By adopting the technical scheme, the arc-shaped large arm steel pipe is installed in sections, and the gentle slope section of the arc-shaped large arm steel pipe is butted with the left-wing gentle slope steel latticed shell and the right-wing gentle slope steel latticed shell; the gentle slope section can set up the interim support steel pipe during installation, the abrupt slope section adopts hoist and mount and the mode that flexible cable wire is firm, the correction is fixed a position the installation, the big arm steel pipe of arc is as the main load-bearing member of formula square top that sinks, be used for connecting left wing abrupt slope steel mesh shell and right wing abrupt slope steel mesh shell again, be used for installing the steel grid after, with curtain unit partition phase-match, form the structure, curtain integrated design, the length hinge length of abrupt slope section, the inclination is very big, the vertical component force that its produced is far more than vertical component force, directly transmit its most component force to ground, realize big traffic, few bearing structure's effect.
Optionally, the quantity of the big arm steel pipe of arc has about two and two big arm steel pipes of arc interval settings, the tip of first arc steel pipe links firmly and is being located the big arm steel pipe outside of left arc, the tip of second arc steel pipe links firmly and is being located the big arm steel pipe outside of arc on right side, is equipped with the steel mesh that is formed by vertically and horizontally staggered's steel pipe between two big arm steel pipes of arc.
By adopting the technical scheme, the bearing capacity of the two arc-shaped large-arm steel pipes is improved; the two arc-shaped large arm steel pipes are arranged side by side, so that gentle slope sections of the two arc-shaped large arm steel pipes are conveniently connected with the left-wing gentle slope steel latticed shell and the right-wing gentle slope steel latticed shell respectively, and steep slope sections of the two arc-shaped large arm steel pipes are connected with the left-wing steep slope steel latticed shell and the right-wing steep slope steel latticed shell respectively; the steel mesh between the two arc-shaped large-arm steel pipes is used for installing a curtain wall, so that a large member piece in the middle of the whole building is prevented from shielding the sight, and meanwhile, the direct butt joint between the left-wing gentle slope steel mesh shell and the right-wing gentle slope steel mesh shell and between the left-wing steep slope steel mesh shell and the right-wing steep slope steel mesh shell is prevented from appearing abrupt, so that the attractiveness of the whole building is improved.
Optionally, a reinforcing support steel pipe is further arranged between the two arc-shaped large arm steel pipes, two ends of the reinforcing support steel pipe are fixedly connected to the inner sides of the two arc-shaped large arm steel pipes respectively, and two ends of the reinforcing support steel pipe correspond to the end portion of the first arc-shaped steel pipe and the end portion of the second arc-shaped steel pipe respectively.
By adopting the technical scheme, the stability and the reliability between the two arc-shaped large arm steel pipes are improved by the reinforcing support steel pipe, and particularly, the deformation of the arc-shaped large arm steel pipe after the stress is transmitted to the two arc-shaped large arm steel pipes by the first arc-shaped steel pipe and the second arc-shaped steel pipe is reduced.
Optionally, a third arc-shaped steel pipe is fixedly connected between the upper end of the left side of the front vertical wall and the middle part of the first arc-shaped steel pipe, a left-wing triangular area is formed between the third arc-shaped steel pipe and the first arc-shaped steel pipe as well as between the arc-shaped large arm steel pipes positioned on the left side, and a left-wing triangular steel net rack is arranged in the left-wing triangular area; preceding right side upper end of erecting the wall with fourth arc steel pipe has been linked firmly between the middle part of second arc steel pipe, fourth arc steel pipe with second arc steel pipe and be located and form the three horn areas on the right side between the big arm steel pipe of arc on right side, be equipped with three horn steel racks on the right side in the three horn areas on the right side.
Through adopting above-mentioned technical scheme for the transition is more natural between the top of preceding perpendicular wall and the top of the left side perpendicular wall and the top of the right side perpendicular wall, can not leave great vacancy, has increased the area of the formula square that sinks that steel latticed shell building structure covered in this application.
Optionally, the left side and the right side of the roof truss are respectively provided with a left steel mesh shell and a right steel mesh shell; the left steel reticulated shell is butted with the left wing steep slope steel reticulated shell, and the right steel reticulated shell is butted with the right wing steep slope steel reticulated shell.
Through adopting above-mentioned technical scheme, left side steel mesh shell also can be thought of left wing abrupt slope steel mesh shell toward the continuation of rear side direction, right side steel mesh shell also can be thought of right wing abrupt slope steel mesh shell toward the continuation of rear side direction, left side steel mesh shell and right side steel mesh shell are located the both sides of roof truss and left side steel mesh shell and right side steel mesh shell symmetry set up, left side steel mesh shell and right side steel mesh shell and curtain unit phase-match realize more complete cladding to concrete frame building structure's both sides.
Optionally, the roof truss includes at least one roof transverse truss and a plurality of roof longitudinal trusses, the plurality of roof longitudinal trusses are arranged in parallel at intervals, the roof longitudinal trusses are all fixedly connected with the roof transverse trusses, and the roof longitudinal trusses are fixedly connected with each other through a plurality of transverse steel pipes; the roof support steel pipe is a single-pole stand column or a tree-shaped stand column or a V-shaped stand column, the lower end of the roof support steel pipe is fixed on the top floor of the concrete frame building structure, and the upper end of the roof support steel pipe is fixedly connected with the lower side of the roof longitudinal truss and/or the lower side of the roof transverse truss.
By adopting the technical scheme, the roof truss can be built and installed by adopting a traditional full hall scaffold, and the stress of the whole roof truss is dispersed to a concrete frame building structure through a plurality of roof support steel pipes.
Further, as a preferred scheme, a single-pole upright post is arranged between the roof longitudinal truss and the top floor of the concrete frame building structure and is used for supporting the roof longitudinal truss; and a V-shaped stand column is arranged between the roof transverse truss and the top floor of the concrete frame building structure and is used for supporting the roof transverse truss. The roof transverse truss is divided into a front part and a rear part by the roof longitudinal truss, the rear part of the roof longitudinal truss is divided more smoothly, the front part of the roof longitudinal truss has a certain gradient, the front part of the roof longitudinal truss is also provided with a lighting hole, and the lighting hole is formed by surrounding a three-layer steel pipe annular structure fixedly arranged on the roof longitudinal truss.
The span of roofing transverse truss in this application can reach 67 meters, whole building structure minimum elevation: 5.600m, peak elevation: +52.299m, namely a horizontal reference plane with 0m floor of one floor of the concrete frame building structure, wherein the distance between the ground of the sunken plaza and the floor of one floor is 5.6m, and the distance between the highest point position of the upper arched beam and the floor of one floor is 52.299m; the upper end of the front vertical wall is fixedly connected with a square pipe, the square pipe is connected with the upper end of each secondary rod of the front vertical wall through a full-welded rigid joint, and the lower end of the arc-shaped large-arm steel pipe is fixedly connected with the square pipe through welding. The maximum cross section of the two first support steel pipes and the maximum cross section of the two second support steel pipes are phi 1200mm multiplied by 80mm; the roof transverse truss and the roof longitudinal truss are both composed of a plurality of curved steel pipes; left wing gentle slope steel latticed shell, right wing gentle slope steel latticed shell, left wing abrupt slope steel latticed shell, right wing abrupt slope steel latticed shell, left wing triangle steel rack, right wing triangle steel rack below and the abrupt slope section below of the big arm steel pipe of arc all need not set up the support steel pipe in this application, have improved the inside penetrating sense of steel latticed shell building structure, and whole field of vision is wider more.
The steel latticed shell building structure in this application is applicable to big space, wholeness requirement height, have simultaneously height simultaneously and stride with frivolous structural system, and it has reduced structural rod spare and has sheltered from the sight, and whole space is effectual. The structural rod piece is used as a supporting system and is matched with the curtain wall unit in a dividing mode, and the structure and the curtain wall are integrally designed by combining the space steel latticed shell and the roof steel truss structural system, so that the structure is novel, and the appearance is large.
In a second aspect, the application aims to provide a construction process for building the steep and gentle slope radian mutation multi-curved-surface steel latticed shell building structure, and solves the problems that the construction difficulty of the nonlinear steel latticed shell building structure with large span, high space and high and low inclined span is high, the construction efficiency is low, and a large amount of temporary support steel pipes and a large amount of scaffolds are needed.
The application provides a construction process who builds above-mentioned steep gentle slope radian sudden change multi-surface steel reticulated shell building structure adopts following technical scheme:
a construction process for building the steep and gentle slope radian mutation multi-curved-surface steel latticed shell building structure comprises the following steps:
s1, dividing a front vertical wall, a left vertical wall, a right vertical wall, a left-wing gentle slope steel latticed shell, a right-wing gentle slope steel latticed shell, a left-wing steep slope steel latticed shell and a right-wing steep slope steel latticed shell into a plurality of spliced unit modules according to a building design drawing, and conveying the spliced unit modules to a construction site after prefabricating and producing each section of steel pipe in a factory;
s2, sequentially assembling the assembling unit modules of the front vertical wall, the left vertical wall and the right vertical wall on an assembling jig frame on the ground, and hoisting and installing the assembling unit modules to preset positions;
s3, building a roof truss on the top floor of the concrete frame building structure;
s4, building a temporary steel pipe support at a preset position of the concrete frame building structure, and hoisting and mounting the first arc-shaped steel pipe, the second arc-shaped steel pipe, the third arc-shaped steel pipe, the fourth arc-shaped steel pipe, a slope-slowing section at the lower end of the arc-shaped large-arm steel pipe and the lower arc-shaped beam in a subsection mode by using the temporary steel pipe support;
s5, sequentially assembling all the assembling unit modules of the left-wing gentle slope steel latticed shell and the right-wing gentle slope steel latticed shell on an assembling jig on the ground, and hoisting and installing all the assembling unit modules of the left-wing gentle slope steel latticed shell and the right-wing gentle slope steel latticed shell to preset positions in a segmented, staged and unsupported symmetrical installation sequence;
s6, sequentially hoisting and installing steep slope sections at the middle part and the upper end of the arc-shaped large-arm steel pipe, and stabilizing and correcting by adopting a flexible steel cable;
s7, sequentially assembling all the assembling unit modules of the left wing steep slope steel latticed shell and the right wing steep slope steel latticed shell on an assembling jig on the ground, and hoisting and installing all the assembling unit modules of the left wing steep slope steel latticed shell and the right wing steep slope steel latticed shell to preset positions by adopting a subsection and segmentation staged unsupported symmetrical installation sequence;
s8, hoisting in sections and symmetrically installing upper arc beams, fixedly welding the peripheral edges of the roof truss with the upper arc beams, and mending the lacking steel pipes;
s9, unloading the temporary support steel pipes step by step from low to high in bilateral symmetry.
The steel latticed shell building structure built in the application is matched with the concrete frame building structure to form an integral building structure after being combined; when in construction, a concrete frame building structure is firstly built, the concrete frame building structure is a multi-layer building with more than five layers, a sinking type space is arranged in the middle of the front side of the concrete frame building structure, the sinking type space is provided with a concrete ground, two sides of the sinking type space are provided with low-layer terraces, the low-rise terrace can have one-story or two-story floor height design relative to the concrete ground of the sinking space, the concrete frame building structure is close to the middle part and both sides of the rear part and is provided with the high-rise terrace, the height of the high-rise terrace is less than the top floor height of the concrete frame building structure, is higher than the height of the low-rise terrace, can be designed as the floor height of three-story or four-story usually; the front vertical wall is arranged on the concrete ground of the sunken space, the left vertical wall and the right vertical wall are respectively arranged on low-rise terrace at two sides of the sunken space, the left side and the right side of the concrete frame building structure are respectively provided with a left side steel reticulated shell and a right side steel reticulated shell, the left side steel reticulated shell and the right side steel reticulated shell are built between the step S2 and the step S3, finally, the left side steel reticulated shell is butted with the left wing steep slope steel reticulated shell, and the right side steel reticulated shell is butted with the right wing steep slope steel reticulated shell; the left side steel reticulated shell and the right side steel reticulated shell are respectively arranged on high-rise terraces on two sides of the concrete frame building structure, the heights of the left side steel reticulated shell and the right side steel reticulated shell are extended upwards all the time to exceed the height of a top floor of the concrete frame building structure, and the left side and the right side of the roof truss are respectively connected with the upper ends of the left side steel reticulated shell and the right side steel reticulated shell in a butt joint mode.
The steep and gentle slope radian sudden change multi-curved-surface steel latticed shell building structure built in the application is a large-span single-layer free-form-surface steel latticed structure, the whole construction process is carried out according to the construction process of ' flexible and stable after first supporting ', the site construction follows the ' general welding principle of ' from bottom to top, uniform symmetry, partition and block, from inside to outside ', the steel latticed closure follows the ' substep, symmetry, slow and balanced ' sequence to unload temporary supporting steel pipes, and the problem that the large-span single-layer free-form-surface steel latticed structure is difficult to construct is solved. Meanwhile, a plurality of groups of assembly jig frames can be arranged and assembled by segmenting and slicing the ground, the workload of high-altitude operation is reduced, a plurality of assembly unit modules can be assembled simultaneously, the construction operation surface is enlarged, the assembly period is shortened, the whole construction progress is accelerated, and the construction efficiency is improved.
According to the method, the pre-arching value of the steel latticed shell is accurately determined through simulation analysis in the construction process before construction, the arching value is reserved in the modeling process, a safe and efficient heavy steel pipe supporting system is designed, hoisting machinery is reasonably selected, ground assembling is adopted, segmented hoisting is in place, the flexible inhaul cable is stable, grouped symmetrical unloading is achieved, technologies such as real-time monitoring and the like are adopted, the positioning precision is strictly controlled in the ground assembling and high-altitude installation processes, the deformation value is monitored in the unloading process, it is ensured that all structural deformation meets the requirements of design and specification, and experience reference and guidance are provided for construction of similar complex space steel structures.
Optionally, in step S2, a front vertical wall is installed on the ground, a left vertical wall and a right vertical wall are installed on a floor of the concrete framed building structure, the left vertical wall and the right vertical wall are located on the left and right sides of the front vertical wall, respectively, and the left vertical wall and the right vertical wall are both spaced from the front vertical wall and are both located behind the front vertical wall.
Through above-mentioned technical scheme, the mode of hoist and mount again after left side is erected wall and right side and is erected the wall and also adopts the unit to assemble is installed, and left side is erected the wall and can be divided into 5 unit module, assembles in proper order from the rear side toward the front side, and two adjacent unit module pass through steel pipe welding. Preceding vertical wall, left side vertical wall and right vertical wall are installed at concrete frame building structure's different position respectively, choose 1 300 tons crawler crane as main hoisting machinery in concrete frame building structure's front side for use, respectively choose a 220 tons truck crane as hoisting machinery in concrete frame building structure's the left and right sides for use, preceding vertical wall, left side vertical wall and right vertical wall can the simultaneous construction operation, preceding vertical wall, each of left side vertical wall and right vertical wall is assembled the unit module and is assembled the back in the handling installation on assembling the bed-jig in proper order, the efficiency of construction is high, and it is safer.
The roof truss comprises a roof transverse truss and a plurality of roof longitudinal trusses, wherein the roof transverse truss and the roof longitudinal trusses are located in the middle, the roof longitudinal trusses are fixedly connected through steel pipes, the roof transverse truss located in the middle divides the roof longitudinal trusses into a front part and a rear part, the front part is defined as a front area longitudinal truss, the rear part is defined as a rear area longitudinal truss, and the rear area longitudinal trusses are built and installed by full framing scaffolding; and after the step S8 and before the step S9, sequentially assembling the assembly unit modules of the transverse roof truss and the longitudinal front area truss on the ground, and then lifting, installing and fixing. And a lighting hole structure formed by three layers of steel pipe annular structures is hoisted and mounted on the front-area longitudinal truss.
Optionally, in the step S2, the step S5, and the step S7, before assembling each assembling unit module on the assembly jig frame on the ground, the whole modeling is performed, and the spatial three-dimensional coordinates of each assembling unit module are calculated and extracted, and positioning lofting is performed; according to the positioning lofting coordinates, a temporary support is arranged on the assembling jig frame, and the position and elevation of the temporary support are positioned by using a total station.
In the application, the port three-dimensional coordinates are also utilized to carry out main pipe positioning of each assembled unit module, the precision of the main pipe butt joint interface is adjusted, a welding seam constraint code plate is arranged, and the secondary pipe assembling sequence is to ensure that the welding of pipe-pipe penetration hidden welding seams is finished and the lifting is carried out after the detection is qualified. By adopting the technical scheme, the accurate reliability of assembling of each assembling unit module can be ensured.
Optionally, the arrangement position and the height of the supporting plane of each temporary supporting steel pipe are determined according to the form of the steel latticed shell building structure and the structural characteristics of the concrete frame building structure, the supporting counter force is determined through simulation analysis in the construction process, and flange joint independent steel pipe support or combined steel pipe support is selected; the top of the temporary support steel pipe is provided with a positioning template and a limiting plate, the bottom of the temporary support steel pipe is welded and fixed with the ground foundation slab or the concrete beam plate through an embedded plate, and whether the lower floor is subjected to back-jacking reinforcement or not is determined according to the checking calculation result of the concrete structure.
By adopting the technical scheme, the construction safety and reliability are guaranteed, the risk of structural deformation caused by sinking of the temporary support steel pipe is effectively reduced, and the damage to the building structure by the temporary support steel pipe is avoided as much as possible.
Furthermore, the temporary support steel pipe is composed of a plurality of sections, two adjacent sections of the temporary support steel pipe are connected through flange joints, the temporary support steel pipe is connected with the ground by splicing through 4.8-grade common bolts, and the flange clamp plate joints are connected with the horizontal support or the inclined support; the lower end of the temporary support steel pipe is welded and fixed between a 7-shaped plate and an embedded part, and a positioning template is arranged at the top of the temporary support steel pipe; the temporary support steel pipe is pulled at four sides in the installation process to be pulled to wind for adjustment and correction, so that the hoisting safety is ensured.
Optionally, in step S4, according to the sectional positions, lengths and weights of the first arc-shaped steel pipe and the second arc-shaped steel pipe, the temporary support steel pipes are used for high-altitude sectional installation, two points are used for hoisting in the hoisting process of the crane, a chain block is used for assisting in adjusting the angle, a wind pulling assisting correction is used for pulling, the high-precision total station is used for three-dimensional coordinate positioning, and the crane can be unhooked after the welding of all interfaces is completed.
By adopting the technical scheme, the safety and reliability of construction are ensured, and the accurate reliability of installation is ensured.
In the application, hoisting machinery is selected according to the weight, the overall dimension, the field site, the space and other operation conditions of the assembled unit modules, and the curved surface assembled unit modules with large span and height are preferably hoisted by using crawler cranes or truck cranes. According to the characteristics of the steel latticed shell building structure, the construction quality is guaranteed, the safety risk is reduced, and on the premise of improving the construction efficiency, mechanical performance of hoisting equipment is selected according to the site, and each part is divided into large assembly unit modules as much as possible.
Optionally, in step S9, the positioning template at the top end of the temporary support steel pipe is cut, and the temporary support steel pipe is separated from the steel latticed shell building structure by adopting a maximum deformation equal-division unloading process.
In the application, the lateral bending of the temporary support steel pipe is l/1000 and is not more than 50mm, and the integral verticality is H/1000 and is not more than 50mm; the grade of the butt weld of each steel pipe is full penetration one grade, the grade of the weld of the pipe Guan Xiangguan is two grades, and the fillet weld part ensures that the height hf of the weld is more than or equal to 0.7 of the plate thickness; the measured deflection value after the total assembly of the steel latticed shell building structure is finished is not more than 1.15 times of the calculated deflection value under the corresponding load condition; the angle of the steel cable and the wind pulling device is not less than 30 degrees, and the anchoring points are ensured to be firm and reliable.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the steel latticed shell building structure in this application wholly forms the many curved surfaces building structure between large-span, height inclined span big lead to, and whole handsome in appearance, the bearing structure of its application is less, and the field of vision is broad.
2. The steel latticed shell building structure appearance in this application is novel, and structural modeling is slim and graceful, and is just gentle and sufficient, and steep gentle slope curved surface radian sudden change, each part is rationally distributed, and structural stability is good.
3. According to the method and the device, the multiple parts are spliced on the ground in a segmented and segmented mode, so that the workload of a large amount of overhead work is reduced, the safety risk is reduced, the construction quality is guaranteed, and the construction efficiency is improved.
4. The bed-jig can be assembled to a plurality of multiunit in this application, and a plurality of unit modules of assembling are assembled simultaneously, have enlarged the construction operation face, and further shorten the cycle of assembling for whole construction progress.
5. First arc steel pipe and second arc steel pipe set up the independent steel pipe support of ring flange node in this application, do not have the support installation in left wing gentle slope steel reticulated shell, the right wing gentle slope steel reticulated shell, and only the border is responsible for the part and is set up the steel pipe and support, great reduction the frock quantity, and the independent steel pipe support of ring flange node is installed and removed the convenience, and no material loss, green high efficiency accords with the material-saving requirement, has improved the efficiency of construction simultaneously.
6. In the application, the steep slope section, the left wing steep slope steel latticed shell and the right wing steep slope steel latticed shell in the middle of the arc-shaped large arm steel pipe and at the upper end of the arc-shaped large arm steel pipe are installed without supports, the anti-deformation arching value is reserved, the flexible steel cable is adopted to be stable and corrected, the installation difficulty is reduced, the installation speed is accelerated, the tool cost is saved, and the engineering quality is ensured.
7. In the application, the steep sections and two sides at the middle part and the upper end of the arc-shaped large-arm steel pipe are symmetrically installed in a high-altitude mode in a section-by-section mode, a stable structure system is formed in a section-by-section mode, the problem that the outer rigidity of a single-layer grid plane is weak is solved, the high-altitude positioning difficulty is reduced, the installation accuracy is guaranteed, the safety risk is reduced, and the construction period is shortened.
Drawings
Fig. 1 is a schematic perspective view of a steel latticed shell building structure in the application.
Fig. 2 is a schematic perspective view of a steel latticed shell building structure in the present application.
Fig. 3 is a schematic top view of a steel reticulated shell building structure of the present application.
Fig. 4 is a schematic structural diagram of a three-layer steel pipe annular structure forming a light transmission hole in the application.
Fig. 5 is a schematic view of the installation and matching structure of the steel latticed shell building structure and the concrete frame building structure in the application.
Fig. 6 is a schematic view of the assembly structure of a part of main pipe rod in the steel latticed shell building structure in the application.
Fig. 7 is a schematic view of the installation and connection structure of the first support steel pipe and the first arc-shaped steel pipe in the present application.
Fig. 8 is a partial structure schematic diagram of the roof support steel pipe adopting the single-rod column in the application.
Fig. 9 is a partial structural schematic diagram of the roof support steel pipe adopting the V-shaped upright in the present application.
Fig. 10 is a first structural diagram of the construction process in the present application.
Fig. 11 is a state structure diagram of the construction process in the present application.
Fig. 12 is a third schematic structural diagram of the state during the construction process in the present application.
Fig. 13 is a distribution diagram of the split unit modules of the left vertical wall, the left wing steep slope steel latticed shell, the left wing gentle slope steel latticed shell and the left side steel latticed shell in the application.
Fig. 14 is a distribution diagram of the sub-assembled unit modules of the front vertical wall, the arc-shaped large arm steel pipe and the steel grid in the application.
Fig. 15 is a schematic view of the assembly of the building unit modules on the building jig in the present application.
Fig. 16 is a schematic perspective view of the temporary support steel pipe according to the present application.
In the figure, 1, a front vertical wall; 1a, square tubes; 2a, a left vertical wall; 2b, a right vertical wall; 3. a roof truss; 31. a roof transverse truss; 32. a roof longitudinal truss; 33. a transverse steel pipe; 34. the three layers of steel pipe are in annular structures; 34a, lighting holes; 4. an arc-shaped large-arm steel pipe; 41. a gradual slope section; 42. a steep slope section; 5. a first support steel pipe; 6. a second support steel pipe; 7. a first arc-shaped steel pipe; 8. a second arc-shaped steel pipe; 9. a lower arched beam; 10. an upper arc beam; 11. a left wing steep slope steel latticed shell; 12. a right wing steep slope steel latticed shell; 13. a left-wing gentle slope steel latticed shell; 14. a right-wing gentle slope steel latticed shell; 15. steel mesh; 16. reinforcing the support steel pipe; 17. a third arc-shaped steel pipe; 18. a fourth arc-shaped steel pipe; 19. a left-wing triangular steel net rack; 20. a right wing triangular steel net rack; 21. a left side steel latticed shell; 22. a right steel latticed shell; 23. a roof support steel pipe; 24. temporarily supporting the steel pipe; 25. assembling a jig frame; 26. a total station; 27. a concrete frame building structure.
Detailed Description
The present application is described in further detail below with reference to fig. 1-16.
This embodiment discloses a steep gentle slope radian sudden change multi-curved surface steel reticulated shell building structure, this steep gentle slope radian sudden change multi-curved surface steel reticulated shell building structure cooperation concrete frame building structure installation use.
Referring to fig. 1 and 2, the steep gentle slope radian abrupt multi-curved-surface steel latticed shell building structure in the embodiment includes a front vertical wall 1, a left vertical wall 2a, a right vertical wall 2b, a roof truss 3, a left wing steep slope steel latticed shell 11, a right wing steep slope steel latticed shell 12, a left wing gentle slope steel latticed shell 13, a right wing gentle slope steel latticed shell 14, a left wing triangular steel latticed rack 19, a right wing triangular steel latticed rack 20, a left side steel latticed shell 21 and a right side steel latticed shell 22; an arc-shaped large arm steel pipe 4 inclining upwards is fixedly arranged at the upper end of the front vertical wall 1, a first arc-shaped steel pipe 7 is arranged between the left vertical wall 2a and the arc-shaped large arm steel pipe 4, a second arc-shaped steel pipe 8 is arranged between the right vertical wall 2b and the arc-shaped large arm steel pipe 4, a lower arc-shaped beam 9 extending towards the left side and the right side of the arc-shaped large arm steel pipe 4 is fixedly arranged in the middle of the arc-shaped large arm steel pipe 4, an upper arc-shaped beam 10 extending towards the left side and the right side of the arc-shaped large arm steel pipe 4 is fixedly arranged at the upper end of the arc-shaped large arm steel pipe 4, a left wing steep slope steel reticulated shell 11 is positioned between a lower arc-shaped beam 9 and an upper arc-shaped beam 10 at the left side of the arc-shaped large arm steel pipe 4, and a right wing steep slope steel reticulated shell 12 is positioned between the lower arc-shaped beam 9 and the upper arc-shaped beam 10 at the right side of the arc-shaped large arm steel pipe 4; the left-wing gentle-slope steel latticed shell 13 is positioned between the lower arc-shaped beam 9 on the left side of the arc-shaped large-arm steel pipe 4 and the upper end of the left vertical wall 2a and the first arc-shaped steel pipe 7, and the right-wing gentle-slope steel latticed shell 14 is positioned between the lower arc-shaped beam 9 on the right side of the arc-shaped large-arm steel pipe 4 and the upper end of the right vertical wall 2b and the second arc-shaped steel pipe 8; a third arc-shaped steel pipe 17 is fixedly connected between the upper end of the left side of the front vertical wall 1 and the middle part of the first arc-shaped steel pipe 7, a left wing triangular area is formed between the third arc-shaped steel pipe 17, the first arc-shaped steel pipe 7 and the arc-shaped large arm steel pipe 4 positioned on the left side, and a left wing triangular steel net rack 19 is positioned in the left wing triangular area; a fourth arc-shaped steel pipe 18 is fixedly connected between the upper end of the right side of the front vertical wall 1 and the middle part of the second arc-shaped steel pipe 8, a right wing triangular area is formed between the fourth arc-shaped steel pipe 18 and the second arc-shaped steel pipe 8 as well as between the arc-shaped large arm steel pipe 4 positioned on the right side, a right wing triangular steel net rack 20 is positioned in the right wing triangular area, a left side steel reticulated shell 21 and a right side steel reticulated shell 22 are respectively positioned on the left side and the right side of the roof truss 3, and the left side steel reticulated shell 21 and the right side steel reticulated shell 22 are symmetrically arranged; the left steel latticed shell 21 is butted with the left wing steep slope steel latticed shell 11, and the right steel latticed shell 22 is butted with the right wing steep slope steel latticed shell 12.
Referring to fig. 3, the number of the arc-shaped large arm steel pipes 4 is two, the two arc-shaped large arm steel pipes 4 are arranged at intervals left and right, the end part of the first arc-shaped steel pipe 7 is fixedly connected to the outer side of the arc-shaped large arm steel pipe 4 positioned on the left side, the end part of the second arc-shaped steel pipe 8 is fixedly connected to the outer side of the arc-shaped large arm steel pipe 4 positioned on the right side, and a steel grid 15 formed by criss-cross steel pipes is arranged between the two arc-shaped large arm steel pipes 4; a reinforcing support steel pipe 16 is further arranged between the two arc-shaped large arm steel pipes 4, two ends of the reinforcing support steel pipe 16 are fixedly connected to the inner sides of the two arc-shaped large arm steel pipes 4 respectively, and two ends of the reinforcing support steel pipe 16 correspond to the end portion of the first arc-shaped steel pipe 7 and the end portion of the second arc-shaped steel pipe 8 respectively.
Referring to fig. 3, the roof truss 3 is fixed on the top floor of the concrete framed building structure 27 through the roof support steel pipes 23 and the outer peripheral edge of the roof truss 3 is connected with the upper arc beam 10; the roof support steel pipe 23 is a single-pole column or a tree-shaped column or a V-shaped column, the lower end of the roof support steel pipe 23 is fixed on the top floor of the concrete frame building structure 27, and the upper end is fixedly connected with the lower side of the roof longitudinal truss 32 and/or the lower side of the roof transverse truss 31; the roof truss 3 can be constructed and installed by adopting a traditional full hall scaffold, and the stress of the whole roof truss 3 is dispersed on the concrete frame building structure 27 through a plurality of roof support steel pipes 23. The roof truss 3 comprises at least one roof transverse truss 31 and a plurality of roof longitudinal trusses 32, the roof longitudinal trusses 32 are arranged in parallel at intervals, the roof longitudinal trusses 32 are fixedly connected with the roof transverse trusses 31, and the roof longitudinal trusses 32 are fixedly connected with each other through a plurality of transverse steel pipes 33; the roof transverse truss 31 divides the roof longitudinal truss 32 into a front part and a rear part, the rear part of the roof longitudinal truss 32 is relatively flat, the front part of the roof longitudinal truss 32 has a certain gradient, and the front part of the roof longitudinal truss 32 is also provided with a lighting hole 34a.
Referring to fig. 4, the light hole 34a in the present application is surrounded by a three-layer steel pipe ring structure 34 fixed on the roof longitudinal truss 32.
The steel latticed shell building structure is suitable for ultra-large space free-form surface steel latticed structures such as large-scale theaters, stadiums, airport terminal buildings, high-speed rail station houses and conference exhibition centers, and is matched with the concrete frame building structure 27 to form an integral building structure after being combined; in the application, the direction of a front gate of an integral building structure is taken as a front square, the corresponding position is taken as a front position or a front side position, the other opposite direction is taken as a rear position, the corresponding position is taken as a rear position or a rear side position, when the front gate is faced with a gate, the left-hand direction is taken as a left side position, the corresponding position is taken as a left position or a left side position, the right-hand direction is taken as a right side position, and the corresponding position is taken as a right position or a right side position. The directional terms used in this application are used for convenience in describing aspects of the present invention and are not intended to limit aspects of the present invention.
Referring to fig. 5, the front vertical wall 1 is fixedly arranged on the ground, and a first support steel pipe 5 is arranged between the lower end of the arc-shaped large arm steel pipe 4 and the ground; the lower ends of the left vertical wall 2a and the right vertical wall 2b are fixedly arranged on a floor of the concrete frame building structure 27, and second support steel pipes 6 are arranged between the first arc-shaped steel pipe 7 and the ground and between the second arc-shaped steel pipe 8 and the ground; the roof truss 3 is fixed on the top floor of the concrete frame building structure 27 through a roof support steel pipe 23, and the peripheral edge of the roof truss 3 is connected with the upper arc-shaped beam 10; a single-pole upright post is arranged between the roof longitudinal truss 32 and the top floor of the concrete frame building structure 27 and is used for supporting the roof longitudinal truss 32; a V-shaped upright is provided between the roof cross truss 31 and the top floor of the concrete framed building structure 27 for supporting the roof cross truss 31.
Referring to fig. 5, a sinking square is arranged at a position on the front side of a concrete frame building structure 27 matched with the steel latticed shell building structure in the application, the ground on which the front vertical wall 1 is installed is the ground of the sinking square, and two sides of the sinking square are provided with a layer of terrace serving as a layer of floor on which the left vertical wall 2a and the right vertical wall 2b are installed; a first floor in the present application refers broadly to a lower floor, the height position of which is between a higher floor and the ground, rather than the divided state of floors presented by sight, and thus it may be a second floor or a third floor as an equivalent alternative. The steel latticed shell building structure in the application is mainly coated on the left side, the right side and the front side of the concrete frame building structure 27, the concrete frame building structure 27 can be a multi-layer building with more than five layers, a roof truss 3 is arranged above a top floor of the concrete frame building structure 27 and serves as a top covering layer of the concrete frame building structure 27, and the roof truss 3 is connected with the front vertical wall 1 through an arc-shaped inclined arc-shaped large-arm steel pipe 4; the lower extreme of the big arm steel pipe of arc 4 links firmly with preceding vertical wall 1 mutually to set up first support steel pipe 5 between with the ground, thereby play the supporting role to big arm steel pipe of arc 4, bear the weight of the vertical stress and the lateral stress of big arm steel pipe of arc 4. The upper end of the arc-shaped large-arm steel pipe 4 extends upwards in an inclined mode and then is fixedly connected with the upper arc-shaped beam 10, and partial side stress is transmitted to the concrete frame building structure 27 in a dispersed mode through the upper arc-shaped beam 10 and the roof truss 3; the first arc-shaped steel pipe 7 and the second arc-shaped steel pipe 8 are directly supported on the ground through the second support steel pipe 6, two ends of the first arc-shaped steel pipe 7 are connected with the left vertical wall 2a and the arc-shaped large arm steel pipe 4, two ends of the second arc-shaped steel pipe 8 are connected with the right vertical wall 2b and the arc-shaped large arm steel pipe 4, and a stable and reliable integral three-dimensional structure is formed between the two structures, so that the weight of the left-wing gentle-slope steel reticulated shell 13 and the weight of the right-wing gentle-slope steel reticulated shell 14 can be effectively supported; the lower arc-shaped beam 9 is connected with the left vertical wall 2a and the right vertical wall 2b, is also connected with the arc-shaped large-arm steel pipe 4, and is also connected with the upper arc-shaped beam 10 through a left wing steep slope steel reticulated shell 11 and a right wing steep slope steel reticulated shell 12, so that an integral three-dimensional structure is formed with the roof truss 3. The stress load of the whole structure is distributed uniformly, the design of each part is scientific and reasonable, and the safety of the structure can be ensured on the premise of using the supporting structure as little as possible. The two arc-shaped large-arm steel pipes 4 in the application improve the bearing capacity; the two arc-shaped large arm steel pipes 4 are arranged side by side, so that the gentle slope sections 41 of the two arc-shaped large arm steel pipes 4 are conveniently connected with the left-wing gentle slope steel latticed shell 13 and the right-wing gentle slope steel latticed shell 14 respectively, and the steep slope sections 42 of the two arc-shaped large arm steel pipes 4 are connected with the left-wing steep slope steel latticed shell 11 and the right-wing steep slope steel latticed shell 12 respectively; the steel grid 15 between the two arc-shaped large-arm steel pipes 4 is used for installing a curtain wall, so that a large rod piece is prevented from blocking the sight of the middle piece of the whole building, and meanwhile, the direct butt joint between the left-wing gentle slope steel net shell 13 and the right-wing gentle slope steel net shell 14 and between the left-wing steep slope steel net shell 11 and the right-wing steep slope steel net shell 12 is prevented from appearing abrupt, so that the attractiveness of the whole building is improved. The stability and the reliability between the two arc-shaped large arm steel pipes 4 are improved by arranging the reinforcing support steel pipe 16 between the two arc-shaped large arm steel pipes 4, and particularly, the deformation of the arc-shaped large arm steel pipes 4 after the stress is transmitted to the two arc-shaped large arm steel pipes 4 by the first arc-shaped steel pipe 7 and the second arc-shaped steel pipe 8 is reduced.
The utility model provides a steel latticed shell building structure about wing district is radian sudden change free-form surface individual layer steel grid structure, the biggest steel pipe specification is phi 900 48mm, left wing gentle slope steel latticed shell 13 and right wing gentle slope steel latticed shell 14 wholly are the space and twist reverse irregular curved surface molding, bilateral symmetry, the boundary division is obvious, first arc steel pipe 7 and second arc steel pipe 8 are major diameter thick wall return bend, left wing abrupt slope steel latticed shell 11 and right wing abrupt slope steel latticed shell 12 are space individual layer slope curved surface steel grid, the molding is graceful and graceful, left and right mirror symmetry, space height is big. The integral structure forms a multi-curved surface building structure with large span, high-low inclined span and large through space, the integral structure is attractive in appearance, the number of applied supporting structures is small, and the visual field is wide.
Referring to fig. 5 and 6, the arc-shaped large arm steel pipe 4 includes a gentle slope section 41 at the lower end and steep slope sections 42 at the middle and upper ends, the left-wing gentle slope steel reticulated shell 13 and the right-wing gentle slope steel reticulated shell 14 are butted with the gentle slope section 41, and the left-wing steep slope steel reticulated shell 11 and the right-wing steep slope steel reticulated shell 12 are butted with the steep slope section 42. The arc-shaped large arm steel pipe 4 is installed in sections, and the gentle slope section 41 of the arc-shaped large arm steel pipe 4 is butted with the left-wing gentle slope steel latticed shell 13 and the right-wing gentle slope steel latticed shell 14; during installation, the gentle slope section 41 can be provided with the temporary support steel pipe 24, the steep slope section 42 is positioned and installed in a hoisting and flexible steel cable stabilizing and correcting mode, the arc-shaped large-arm steel pipe 4 is used as a main bearing component above a sunken square, namely, the arc-shaped large-arm steel pipe is used for connecting the left-wing steep slope steel reticulated shell 11 and the right-wing steep slope steel reticulated shell 12 and is also used for being matched with the division of a curtain wall unit after the steel grid 15 is installed, so that a structure and a curtain wall are integrally designed, the steep slope section 42 is long in length hinge, the inclination angle is very large, the vertical component force generated by the steep slope section is far greater than the longitudinal component force, most of the component force is directly transmitted to the ground, and the effects of large communication and few support structures are achieved.
The span of roofing transverse truss 31 in this application can reach 67 meters, whole building structure minimum elevation: 5.600m, highest point elevation: +52.299m, namely, the horizontal reference plane with the floor of one floor of the concrete frame building structure 27 as 0m, the distance from the ground of the sunken plaza to the floor of one floor is 5.6m, and the distance from the highest point of the upper arc-shaped beam 10 to the floor of one floor is 52.299m; the upper end of the front vertical wall 1 is fixedly connected with a square pipe 1a, the square pipe 1a is connected with the upper end of each secondary rod of the front vertical wall 1 through a full-welded rigid joint, and the lower end of the arc-shaped large-arm steel pipe 4 is fixedly connected with the square pipe 1a through welding. The maximum cross section of the two first support steel pipes 5 and the maximum cross section of the two second support steel pipes 6 are phi 1200mm multiplied by 80mm; referring to fig. 7, the first support steel pipe 5 may be composed of a plurality of sections, the lower end of the first support steel pipe 5 is connected to an embedded part by using a 4.8-grade common bolt, the upper end of the first support steel pipe 5 is provided with a flange node connected to the first arc-shaped steel pipe 7, and a horizontal support or an inclined support is further connected between the flange node and the first arc-shaped steel pipe 7. The roof transverse truss 31 and the roof longitudinal truss 32 are both composed of a plurality of curved steel pipes; left wing gentle slope steel latticed shell 13, right wing gentle slope steel latticed shell 14, left wing abrupt slope steel latticed shell 11, right wing abrupt slope steel latticed shell 12, left wing triangle steel rack 19, right wing triangle steel rack 20 below and the steep slope section 42 below of the big arm steel pipe 4 of arc all need not set up the support steel pipe in this application, have improved the inside penetrating sense of steel latticed shell building structure, and whole field of vision is wider. The steel latticed shell building structure in this application is applicable to big space, wholeness requirement height, have simultaneously height simultaneously and stride with frivolous structural system, and it has reduced structural rod spare and has sheltered from the sight, and whole space is effectual. The structural rod piece is used as a supporting system and is matched with the division of the curtain wall unit, and the structural and curtain wall integrated design formed by combining the space steel latticed shell and the roof steel truss structural system is adopted, so that the structural rod piece is novel in structure and large in appearance.
Referring to fig. 8, a single-pole column is arranged between the roof longitudinal truss 32 and the top floor of the concrete frame building structure 27 to serve as a roof support steel pipe 23 for supporting the roof longitudinal truss 32, the lower end of the single-pole column is fixedly connected with an embedded part in the concrete frame building structure 27 through a bolt, and the upper end of the single-pole column is fixedly connected with the bottom of the roof longitudinal truss 32 in a welding manner; referring to fig. 9, a V-shaped upright is arranged between the roof transverse truss 31 and the top floor of the concrete frame building structure 27 to serve as a roof support steel pipe 23 for supporting the roof transverse truss 31, the lower end of the V-shaped upright is fixedly connected with an embedded part in the concrete frame building structure 27 through a bolt, and the upper end of the V-shaped upright is fixedly connected with two positions at the bottom of the roof transverse truss 31 in a welding manner.
The embodiment also provides a construction process of the steep and gentle slope radian sudden change multi-curved-surface steel latticed shell building structure, which is used for constructing and constructing the same or similar steep and gentle slope radian sudden change multi-curved-surface steel latticed shell building structure, and the construction process specifically comprises the following steps:
s1, planning a construction sequence diagram according to a building design drawing, dividing a front vertical wall 1, a left vertical wall 2a, a right vertical wall 2b, a left-wing gentle slope steel latticed shell 13, a right-wing gentle slope steel latticed shell 14, a left-wing steep slope steel latticed shell 11, a right-wing steep slope steel latticed shell 12, a left-wing steep slope steel latticed shell 11, a left-side steel latticed shell 21, a right-side steel latticed shell 22, an arc-shaped large-arm steel pipe 4, a steel grid 15 and part of a roof truss 3 in a steel latticed shell building structure into a plurality of splicing unit modules, and performing and conveying the modules to a construction site after prefabricating and manufacturing according to the specification and the size of each required pipe fitting and rod piece in a factory;
a concrete framework building structure 27 matched with the steel latticed shell building structure is pre-built on a construction site, at least one assembling jig frame 25 is arranged on each of the front side, the left side and the right side of the concrete framework building structure 27, a crane meeting the requirements is configured, and all assembling unit modules are sequentially assembled according to a construction sequence diagram;
referring to fig. 10, step S2 and step S3 are performed next, where step S2 is: sequentially assembling each assembling unit module of the front vertical wall 1, the left vertical wall 2a and the right vertical wall 2b on an assembling jig frame 25 on the ground, and hoisting and installing the assembling unit modules to preset positions;
step S3 is: installing a left steel latticed shell 21 and a right steel latticed shell 22, sequentially assembling all the assembling unit modules of the left steel latticed shell 21 and the right steel latticed shell 22 on an assembling jig 25 on the ground, and hoisting and installing the assembling unit modules to preset positions; building a roof truss 3 on the top floor of the concrete framed building structure 27;
step S2 and step S3 may be performed synchronously; step S2 may be performed first, and then step S3 may be performed; step S3 can also be performed first, and then step S2 is performed;
then, step S4 is performed: the gentle slope section 41 of the arc-shaped large arm steel pipe 4 and the corresponding steel grid 15 are installed in a segmented hoisting mode, the first arc-shaped steel pipe 7 and the second arc-shaped steel pipe 8 are installed in a segmented hoisting mode, the third arc-shaped steel pipe 17 and the fourth arc-shaped steel pipe 18 are installed in a segmented hoisting mode, the lower arc-shaped beam 9 is installed in a segmented hoisting mode, and the left-wing triangular steel net rack 19 and the right-wing triangular steel net rack 20 are installed; in the step, according to the sectional positions, the lengths and the weights of the first arc-shaped steel pipe 7 and the second arc-shaped steel pipe 8, the temporary support steel pipe 24 is used for high-altitude sectional installation, two points are hoisted in the hoisting process of the crane, a single point uses a chain block to assist in adjusting the angle, a pulling cable is used for assisting in correction, the high-precision total station 26 is positioned in a three-dimensional coordinate mode, and the crane can be unhooked after the welding of all interfaces is completed;
referring to fig. 11, step S5 is performed next: sequentially assembling all the assembling unit modules of the left-wing gentle slope steel latticed shell 13 and the right-wing gentle slope steel latticed shell 14 on an assembling jig 25 on the ground, and hoisting and installing all the assembling unit modules of the left-wing gentle slope steel latticed shell 13 and the right-wing gentle slope steel latticed shell 14 to preset positions in a sectional, segmented, staged and unsupported symmetrical installation sequence;
referring to fig. 12, step S6 is performed next: sequentially hoisting and mounting the steep slope section 42 of the arc-shaped large-arm steel pipe 4 and the corresponding steel grid 15, and stabilizing and correcting by adopting a flexible steel cable in the process;
simultaneously with this, step S7: sequentially assembling all the assembling unit modules of the left-wing steep slope steel latticed shell 11 and the right-wing steep slope steel latticed shell 12 on an assembling jig 25 on the ground, and hoisting and installing all the assembling unit modules of the left-wing steep slope steel latticed shell 11 and the right-wing steep slope steel latticed shell 12 to preset positions by adopting a sectional, segmented, staged, unsupported and symmetrical installing sequence;
s8, lifting in sections, symmetrically installing upper arc beams 10, fixedly welding the peripheral edges of the roof truss 3 with the upper arc beams 10, and repairing the lacking steel pipes;
s9, unloading the temporary support steel pipes 24 step by step from low to high and in bilateral symmetry; in this step, the positioning template at the top end of the temporary support steel pipe 24 is cut during unloading, and the temporary support steel pipe 24 is separated from the steel latticed shell building structure by adopting a maximum deformation equal unloading process.
Further, the roof truss 3 in the application comprises a roof transverse truss 31 and a plurality of roof longitudinal trusses 32, the roof transverse truss 31 and the roof longitudinal trusses 32 are located in the middle, the roof longitudinal trusses 32 are fixedly connected through steel pipes, the roof transverse truss 31 located in the middle divides the roof longitudinal trusses 32 into a front part and a rear part, the front part is defined as a front area longitudinal truss, the rear part is defined as a rear area longitudinal truss, and the rear area longitudinal trusses are built and installed by full framing scaffolds; the transverse roof truss 31 and the front-area longitudinal truss are also divided into a plurality of splicing unit modules, and after the step S8 and before the step S9, the splicing unit modules of the transverse roof truss 31 and the front-area longitudinal truss are sequentially spliced on the splicing jig frame 25 on the ground, and then lifted, installed and fixed. And a lighting hole 34a structure formed by three layers of steel pipe annular structures 34 is hoisted and installed on the front-area longitudinal truss.
In this application, left side vertical wall 2a and right side vertical wall 2b all can be divided into 5 and assemble the unit module, and left wing triangle steel rack 19 and right wing triangle steel rack 20 all can be divided into 1 at least and assemble the unit module, and left wing gentle slope steel reticulated shell 13 and right wing gentle slope steel reticulated shell 14 all can be divided into 5 and assemble the unit module, and left wing steep slope steel reticulated shell 11 and right wing steep slope steel reticulated shell 12 all can be divided into 15 and assemble the unit module. Referring to fig. 13, taking a left vertical wall 2a, a left-wing triangular steel net rack 19, a left-wing gentle slope steel net shell 13 and a left-wing steep slope steel net shell 11 as an example, 5 splicing unit modules are sequentially arranged on the left vertical wall 2a from back to front, wherein the number of the splicing unit modules is E3-1, E3-2, E3-3, E3-4 and E3-5, and the two adjacent splicing unit modules are connected by embedded steel pipes. The left-wing triangular steel net rack 19 is small in size, and only 1 splicing unit module with the serial number of E4-1 needs to be designed. The left-wing gentle slope steel latticed shell 13 is provided with 5 splicing unit modules in total from front to back, wherein the 5 splicing unit modules are E4-2, E4-3, E4-4, E4-5 and E4-6. The left-wing steep slope steel latticed shell 11 is provided with 15 splicing unit modules in total, wherein the number of the splicing unit module is E5-1 to E5-15, the number of the splicing unit module is E5-2 is positioned above the number of the splicing unit module is E5-1, the number of the splicing unit module is E5-4 is positioned above the number of the splicing unit module is E5-3, the number of the splicing unit module is E5-12 is positioned above the number of the splicing unit module is E5-7, the number of the splicing unit module is E5-13 is positioned above the number of the splicing unit module is E5-8, the number of the splicing unit module is E5-14 is positioned above the number of the splicing unit module is E5-9, the number of the splicing unit module is E5-15 is positioned above the number of the splicing unit module is E5-10, and splicing is carried out according to the sequence from back to front and from bottom to top. All the parts are assembled in sequence according to the numbering sequence.
The right vertical wall 2b and the left vertical wall 2a are symmetrically arranged, the right wing triangle steel net rack 20 and the left wing triangle steel net rack 19 are symmetrically arranged, the right wing gentle slope steel net shell 14 and the left wing gentle slope steel net shell 13 are symmetrically arranged, and the right wing steep slope steel net shell 12 and the left wing steep slope steel net shell 11 are symmetrically arranged.
Referring to fig. 14, 5 splicing unit modules in total, namely, E1-1, E1-2, E1-3, E1-4 and E1-5, are sequentially arranged on a front vertical wall 1 from left to right, an arc-shaped large-arm steel pipe 4 and a corresponding steel grid 15 thereof are divided into 6 splicing unit modules in total, namely, E2-1, E2-2, E2-3, E2-4, E2-5 and E2-6, from bottom to top, and all the splicing unit modules are sequentially assembled according to the numbering sequence.
Referring to fig. 15, in the above steps S2, S5 and S7, before assembling each assembly unit module on the assembly jig 25 on the ground, the overall modeling is performed, and the spatial three-dimensional coordinates of each assembly unit module are calculated and extracted, and positioning and lofting are performed; according to the positioning lofting coordinates, a temporary support is arranged on the assembling jig frame 25, and the position and elevation of the temporary support are positioned by using a total station 26. The assembly site for installing the assembly jig frame 25 should have sufficient foundation strength and be convenient for hoisting, and the design of the assembly jig frame 25 should consider the requirements of bearing capacity, rigidity and stability. By calculating that hot-rolled HN 200X 100X 5.5X 8 section steel is adopted to erect an assembling jig frame 25, the assembling jig frame is 1000mm high, and enough welding space is ensured; the assembly jig frame 25 is provided with fixed settlement observation points for regularly monitoring settlement deformation.
In the application, the port three-dimensional coordinates are also utilized to carry out main pipe positioning of each assembled unit module, the precision of the main pipe butt joint interface is adjusted, a welding seam constraint code plate is arranged, and the secondary pipe assembling sequence is to ensure that the welding of pipe-pipe penetration hidden welding seams is finished and the lifting is carried out after the detection is qualified. The accurate reliability of assembling of each assembling unit module can be ensured.
In the application, the arrangement position and the height of the supporting plane of each temporary supporting steel pipe 24 are determined according to the form of the steel latticed shell building structure and the characteristics of the concrete frame building structure 27, the supporting counter force is determined through simulation analysis in the construction process, and independent steel pipe supports or combined steel pipe supports with flange joints are selected; referring to fig. 16, a positioning template and a limiting plate are arranged at the top end of the temporary support steel pipe 24, the bottom of the temporary support steel pipe is welded and fixed with the ground foundation slab or the concrete beam plate through an embedded plate, and whether the lower floor is subjected to back-jacking reinforcement or not is determined according to the checking result of the concrete structure. Further, the temporary support steel pipe 24 is composed of a plurality of sections, two adjacent sections of the temporary support steel pipe 24 are connected through flange joints, the temporary support steel pipe 24 is connected with the ground by splicing through 4.8-grade common bolts, and the flange clamp plate joints are connected with the horizontal supports or the inclined supports; the lower end of the temporary support steel pipe 24 is welded and fixed between a 7-shaped plate and an embedded part, and the top of the temporary support steel pipe is provided with a positioning template; the temporary support steel pipes 24 are pulled to wind from four sides in the installation process to be adjusted and corrected, and the hoisting safety is ensured.
The implementation principle is as follows: the steel latticed shell building structure constructed in the application is matched with the concrete frame building structure 27 to form an integral building structure after combination; during construction, a concrete frame building structure 27 is firstly built, the concrete frame building structure 27 is a multi-storey building with more than five floors, a sunken space is arranged in the middle of the front side of the concrete frame building structure 27, a concrete ground is arranged in the sunken space, low-rise terraces are arranged on two sides of the sunken space, the low-rise terraces can be designed to have one or two floor heights relative to the concrete ground in the sunken space, high-rise terraces are arranged on two sides of the concrete frame building structure 27 close to the middle and the rear, the height of each high-rise terraces is smaller than that of the top floor of the concrete frame building structure 27 and higher than that of each low-rise terraces, and the concrete frame building structure can be generally designed to have three or four floor heights; the front vertical wall 1 is arranged on the concrete ground of the sunken space, the left vertical wall 2a and the right vertical wall 2b are respectively arranged on low-layer terraces on two sides of the sunken space, a left-side steel reticulated shell 21 and a right-side steel reticulated shell 22 are arranged on a high-layer terrace, the left-side steel reticulated shell 21 is butted with the left-wing steep-slope steel reticulated shell 11, and the right-side steel reticulated shell 22 is butted with the right-wing steep-slope steel reticulated shell 12; the left steel latticed shell 21 and the right steel latticed shell 22 extend upwards to a height exceeding the top floor height of the concrete frame building structure 27, and the left side and the right side of the roof truss 3 are respectively connected with the upper ends of the left steel latticed shell 21 and the right steel latticed shell 22 in an abutting mode.
The steep and gentle slope radian sudden-change multi-curved-surface steel latticed shell building structure built in the application is a large-span single-layer free-curved-surface steel grid 15 structure and is generally carried out according to a construction process of 'supporting first and then flexibly stabilizing', the rapid construction method simplifies the construction difficulty, improves the construction efficiency, shortens the construction period and has obvious economic benefit. The site construction follows the general welding principle of 'from bottom to top, uniform symmetry, partition and block, from inside to outside', the temporary support steel pipe 24 is unloaded in the sequence of 'step by step, symmetry, slowness and balance' after the steel grid 15 is closed, and the problem that the large-span single-layer free-form surface steel grid 15 structure is difficult to construct is solved. Meanwhile, a plurality of groups of assembly jig frames 25 can be arranged and assembled by segmenting and slicing the ground, the workload of high-altitude operation is reduced, a plurality of assembly unit modules can be assembled simultaneously, the construction operation surface is enlarged, the assembly period is shortened, the whole construction progress is accelerated, and the construction efficiency is improved. The construction method adopts scientific construction and management methods, meets various requirements of engineering quality, safety, construction period and economic indexes, has a good reference function for similar engineering, and provides a method for related engineering construction in the future. The accumulation of the construction experience of the radian-abrupt-change curved-surface steel grid 15 also provides a wider platform for the development of the future construction industry.
According to the method, the pre-arching value of the steel latticed shell is accurately determined through simulation analysis in the construction process before construction, the arching value is reserved in the modeling process, a safe and efficient heavy steel pipe supporting system is designed, hoisting machinery is reasonably selected, ground assembling is adopted, segmented hoisting is in place, the flexible inhaul cable is stable, grouped symmetrical unloading is achieved, technologies such as real-time monitoring and the like are adopted, the positioning precision is strictly controlled in the ground assembling and high-altitude installation processes, the deformation value is monitored in the unloading process, it is ensured that all structural deformation meets the requirements of design and specification, and experience reference and guidance are provided for construction of similar complex space steel structures.
In the application, a hoisting machine is selected according to the weight, the overall dimension, the field site, the space and other operation conditions of the assembled unit modules, and as an optimal scheme, 1 crawler crane with 300 tons is selected as a main hoisting machine at the front side of the concrete frame building structure 27, wherein the length of a main arm of the crawler crane is 54m, the length of a tower arm is 42m, the weight of a rotary table is 130t, and the weight of a vehicle body is 50t. Under the condition of a turning radius of 28m, the rated lifting capacity of the crawler crane is 49.9t; under the condition of a turning radius of 54m, the rated lifting capacity of the crawler crane is 15.7t, and the rated lifting capacity is larger than the weight of the member, so that the hoisting requirement is met. The left side and the right side of the concrete frame building structure 27 respectively select a 220-ton truck crane as hoisting machinery; the maximum hoisting unit weight of the truck crane is less than 10t, and the hoisting requirement is met by adopting the working condition of a main arm, wherein the arm length is 62m, the maximum turning radius is 30m, and the rated hoisting weight is 11.6 t. According to the characteristics of the steel latticed shell building structure, the construction quality is guaranteed, the safety risk is reduced, and on the premise of improving the construction efficiency, mechanical performance of hoisting equipment is selected according to the site, and each part is divided into large assembly unit modules as much as possible.
In the application, the lateral bending of the temporary support steel pipe 24 is l/1000 and is not more than 50mm, and the integral verticality is H/1000 and is not more than 50mm; the grade of the butt weld of each steel pipe is full penetration one grade, the grade of the weld of the pipe Guan Xiangguan is two grades, and the fillet weld part ensures that the height hf of the weld is more than or equal to 0.7 of the plate thickness; the measured deflection value after the total assembly of the steel latticed shell building structure is finished is not more than 1.15 times of the calculated deflection value under the corresponding load condition; the angle of the steel cable and the wind pulling device is not less than 30 degrees, and the anchoring points are ensured to be firm and reliable.
The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A steep and gentle slope radian mutation multi-curved-surface steel latticed shell building structure comprises a front vertical wall (1), a left vertical wall (2 a), a right vertical wall (2 b) and a roof truss (3);
the device is characterized in that the front vertical wall (1) is fixedly arranged on the ground, an arc-shaped large arm steel pipe (4) which inclines upwards is fixedly arranged at the upper end of the front vertical wall (1), and a first supporting steel pipe (5) is fixedly arranged between the lower end of the arc-shaped large arm steel pipe (4) and the ground;
the lower ends of the left vertical wall (2 a) and the right vertical wall (2 b) are fixedly arranged on a floor of a concrete frame building structure (27), a first arc-shaped steel pipe (7) is arranged between the left vertical wall (2 a) and the arc-shaped large arm steel pipe (4), a second arc-shaped steel pipe (8) is arranged between the right vertical wall (2 b) and the arc-shaped large arm steel pipe (4), and second support steel pipes (6) are arranged between the first arc-shaped steel pipe (7) and the ground and between the second arc-shaped steel pipe (8) and the ground;
a lower arc beam (9) extending towards the left side and the right side of the arc-shaped large arm steel pipe (4) is fixedly arranged in the middle of the arc-shaped large arm steel pipe (4), an upper arc beam (10) extending towards the left side and the right side of the arc-shaped large arm steel pipe (4) is fixedly arranged at the upper end of the arc-shaped large arm steel pipe (4), a left wing steep slope steel reticulated shell (11) is arranged between the lower arc beam (9) and the upper arc beam (10) on the left side of the arc-shaped large arm steel pipe (4), and a right wing steep slope steel reticulated shell (12) is arranged between the lower arc beam (9) and the upper arc beam (10) on the right side of the arc-shaped large arm steel pipe (4);
a left-wing gentle-slope steel net shell (13) is arranged between the upper ends of the lower arc-shaped beam (9) and the left vertical wall (2 a) which are positioned on the left side of the arc-shaped large-arm steel pipe (4) and the first arc-shaped steel pipe (7), and a right-wing gentle-slope steel net shell (14) is arranged between the upper ends of the lower arc-shaped beam (9) and the right vertical wall (2 b) which are positioned on the right side of the arc-shaped large-arm steel pipe (4) and the second arc-shaped steel pipe (8);
the roof truss (3) is fixed on the top floor of the concrete frame building structure (27) through a roof support steel pipe (23), and the peripheral edge of the roof truss (3) is connected with the upper arc-shaped beam (10).
2. The steep and gentle radian abrupt multi-curved-surface steel latticed shell building structure according to claim 1, wherein the arc-shaped large arm steel tube (4) comprises a gentle slope section (41) at the lower end and a steep slope section (42) at the middle and upper ends, the left-wing gentle slope steel latticed shell (13) and the right-wing gentle slope steel latticed shell (14) are butted with the gentle slope section (41), and the left-wing steep slope steel latticed shell (11) and the right-wing steep slope steel latticed shell (12) are butted with the steep slope section (42).
3. The steep and gentle slope radian sudden-change multi-curved-surface steel reticulated shell building structure according to claim 1 or 2, characterized in that the number of the arc-shaped large arm steel pipes (4) is two, the two arc-shaped large arm steel pipes (4) are arranged at intervals from left to right, the end part of the first arc-shaped steel pipe (7) is fixedly connected to the outer side of the arc-shaped large arm steel pipe (4) on the left side, the end part of the second arc-shaped steel pipe (8) is fixedly connected to the outer side of the arc-shaped large arm steel pipe (4) on the right side, and a steel mesh (15) formed by criss-cross steel pipes is arranged between the two arc-shaped large arm steel pipes (4);
and a reinforcing support steel pipe (16) is further arranged between the two arc-shaped large arm steel pipes (4), and two ends of the reinforcing support steel pipe (16) are fixedly connected with the inner sides of the two arc-shaped large arm steel pipes (4) respectively and correspond to the end part of the first arc-shaped steel pipe (7) and the end part of the second arc-shaped steel pipe (8) respectively.
4. The steep and gentle slope radian abrupt change multi-curved-surface steel reticulated shell building structure according to claim 1 or 2, wherein a third arc-shaped steel pipe (17) is fixedly connected between the upper end of the left side of the front vertical wall (1) and the middle part of the first arc-shaped steel pipe (7), a left wing triangular area is formed between the third arc-shaped steel pipe (17) and the first arc-shaped steel pipe (7) as well as between the arc-shaped large arm steel pipes (4) positioned on the left side, and a left wing triangular steel truss (19) is arranged in the left wing triangular area; preceding vertical wall (1) the right side upper end with fourth arc steel pipe (18) have been linked firmly between the middle part of second arc steel pipe (8), fourth arc steel pipe (18) with form the triangle region of right wing between second arc steel pipe (8) and the arc forearm steel pipe (4) that are located the right side, be equipped with right wing triangle steel rack (20) in the triangle region of right wing.
5. The steep-gentle-slope radian abrupt-change multi-curved-surface steel reticulated shell building structure according to claim 1 or 2, characterized in that the left side and the right side of the roof truss (3) are respectively provided with a left steel reticulated shell (21) and a right steel reticulated shell (22); the left steel latticed shell (21) is connected with the left wing steep slope steel latticed shell (11), and the right steel latticed shell (22) is connected with the right wing steep slope steel latticed shell (12);
the roof truss (3) comprises at least one roof transverse truss (31) and a plurality of roof longitudinal trusses (32), the roof longitudinal trusses (32) are arranged in parallel at intervals, the roof longitudinal trusses (32) are fixedly connected with the roof transverse trusses (31), and the roof longitudinal trusses (32) are fixedly connected with each other through a plurality of transverse steel pipes (33); the roof support steel pipe (23) is a single-pole column or a tree-shaped column or a V-shaped column, the lower end of the roof support steel pipe (23) is fixed on the top floor of the concrete frame building structure (27), and the upper end of the roof support steel pipe is fixedly connected with the lower side of the roof longitudinal truss (32) and/or the lower side of the roof transverse truss (31).
6. A construction process for constructing the steep and gentle slope radian abrupt multi-curved steel latticed shell building structure according to any one of claims 1 to 5, wherein the construction process comprises the following steps:
s1, dividing a front vertical wall (1), a left vertical wall (2 a), a right vertical wall (2 b), a left-wing gentle slope steel latticed shell (13), a right-wing gentle slope steel latticed shell (14), a left-wing steep slope steel latticed shell (11) and a right-wing steep slope steel latticed shell (12) in a steel latticed shell building structure into a plurality of assembled unit modules according to a building design drawing, prefabricating and producing each section of steel pipe in a factory, and then conveying the steel pipe to a construction site;
s2, sequentially assembling the assembling unit modules of the front vertical wall (1), the left vertical wall (2 a) and the right vertical wall (2 b) on an assembling jig frame (25) on the ground, and hoisting and installing the assembling unit modules to preset positions;
s3, building a roof truss (3) on the top floor of the concrete frame building structure (27);
s4, installing temporary steel pipe supports at preset positions of the concrete frame building structure (27), and installing a gentle slope section (41), a first arc-shaped steel pipe (7), a second arc-shaped steel pipe (8), a third arc-shaped steel pipe (17), a fourth arc-shaped steel pipe (18) and a lower arc-shaped beam (9) at the lower end of the arc-shaped large arm steel pipe (4) in a segmented hoisting mode;
s5, sequentially assembling all the assembling unit modules of the left-wing gentle slope steel latticed shell (13) and the right-wing gentle slope steel latticed shell (14) on an assembling jig frame (25) on the ground, and hoisting and installing all the assembling unit modules of the left-wing gentle slope steel latticed shell (13) and the right-wing gentle slope steel latticed shell (14) to preset positions in a segmented, separated, unsupported and symmetrical installation mode and sequence;
s6, sequentially lifting and mounting steep slope sections (42) at the middle part and the upper end of the arc-shaped large-arm steel pipe (4), and stabilizing and correcting by adopting a flexible steel cable;
s7, sequentially assembling all the assembling unit modules of the left-wing steep-slope steel latticed shell (11) and the right-wing steep-slope steel latticed shell (12) on an assembling jig frame (25) on the ground, and hoisting and installing all the assembling unit modules of the left-wing steep-slope steel latticed shell (11) and the right-wing steep-slope steel latticed shell (12) to preset positions in a segmented, separated, unsupported and symmetrical installation mode and sequence;
s8, hoisting in sections, symmetrically and sequentially installing the upper arc-shaped beams (10), fixedly welding the periphery of the roof truss (3) and the upper arc-shaped beams (10), and mending the lacking steel pipes;
s9, unloading the temporary support steel pipes (24) step by step from low to high in bilateral symmetry.
7. The construction process of the steep and gentle slope radian sudden-change multi-curved-surface steel latticed shell building structure according to claim 6, wherein in the step S2, the front vertical wall (1) is installed on the ground, the left vertical wall (2 a) and the right vertical wall (2 b) which are symmetrical are installed on one floor of the concrete frame building structure (27), the left vertical wall (2 a) and the right vertical wall (2 b) are respectively located on the left side and the right side of the front vertical wall (1), and the left vertical wall (2 a) and the right vertical wall (2 b) are both arranged at intervals with the front vertical wall (1) and are both located at the rear position of the front vertical wall (1).
8. The construction process of the steep and gentle slope radian abrupt change multi-curved-surface steel latticed shell building structure according to claim 6 or 7, characterized in that in the step S2, the step S5 and the step S7, before assembling all the assembling unit modules on an assembling jig frame (25) on the ground, the whole modeling is carried out, and the space three-dimensional coordinates of all the assembling unit modules are calculated and extracted and are positioned and lofted; according to the positioning lofting coordinates, a temporary support is arranged on the assembling jig frame (25), and the position and elevation of the temporary support are positioned by using a total station (26).
9. The construction process of the steep and gentle slope radian sudden-change multi-curved-surface steel latticed shell building structure according to claim 6 or 7, characterized in that the arrangement position and the height of the supporting plane of each temporary supporting steel pipe (24) are determined according to the form of the steel latticed shell building structure and the characteristics of a concrete frame building structure (27), the supporting counter force is determined through simulation analysis of the construction process, and independent steel pipe supports or combined steel pipe supports with flange joints are selected; the top of supporting steel pipe (24) temporarily sets up locating template and limiting plate, and the bottom passes through pre-buried plate welded fastening with ground foundation bottom plate or concrete beam board, confirms whether the below floor carries out the back-lifting reinforcement according to concrete beam board structure checking calculation result.
10. The construction process of the steep and gentle slope radian abrupt change multi-curved-surface steel reticulated shell building structure according to claim 6 or 7, characterized in that in the step S4, according to the sectional positions, lengths and weights of the first arc-shaped steel pipe (7) and the second arc-shaped steel pipe (8), temporary support steel pipes (24) are utilized for high-altitude sectional installation, two points are lifted in the hoisting process of a crane, a single point is utilized for assisting in adjusting the angle by a chain block, wind is pulled for assisting in correction, a high-precision total station (26) is positioned in a three-dimensional coordinate mode, and the crane can be unhooked after all welding interfaces are completed;
in the step S9, the positioning template at the top end of the temporary support steel pipe (24) is cut, and the temporary support steel pipe (24) is separated from the steel latticed shell building structure by adopting a maximum deformation equal-division unloading process.
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CN113431193A (en) * 2021-06-09 2021-09-24 中交第三航务工程局有限公司 Quick installation process of special-shaped membrane system for stretching large-span bionic tree
CN216041687U (en) * 2021-07-29 2022-03-15 中国建筑西南设计研究院有限公司 Building structure
CN114482279A (en) * 2022-01-05 2022-05-13 中铁四局集团建筑工程有限公司 Construction method and device for unequal-height support curved surface steel net rack

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CN117569589A (en) * 2024-01-17 2024-02-20 北京建工集团有限责任公司 Construction method of annular closed delta wing supporting structure
CN117569589B (en) * 2024-01-17 2024-04-12 北京建工集团有限责任公司 Construction method of annular closed delta wing supporting structure
CN118087707A (en) * 2024-04-26 2024-05-28 陕西建工第十建设集团有限公司 Hyperboloid single-layer steel reticulated shell structure and construction method thereof
CN118087707B (en) * 2024-04-26 2024-06-28 陕西建工第十建设集团有限公司 Hyperboloid single-layer steel reticulated shell structure and construction method thereof

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