CN110984681A

CN110984681A - Protective shed and construction method thereof

Info

Publication number: CN110984681A
Application number: CN201911123675.4A
Authority: CN
Inventors: 于忠福
Original assignee: Qingdao Xinhuayou Construction Group Co Ltd
Current assignee: Qingdao Xinhuayou Construction Group Co Ltd
Priority date: 2019-11-17
Filing date: 2019-11-17
Publication date: 2020-04-10

Abstract

The invention discloses a protective shed, which comprises a foundation pit, wherein a central upright post is arranged at the central position of the foundation pit, the central upright post comprises an upper upright post section and a lower upright post section, a first bottom plate is arranged at the bottom of the lower upright post section, a plurality of steel pipe piles are arranged at the bottom of the first bottom plate and are welded and fixed with the first bottom plate through a first flange, a plurality of column bottom rib plates are arranged at the periphery of the top of the first bottom plate and are welded at the bottom of the side edge of a column body of the lower upright post section, a pipeline is buried below the lower upright post section, a top plate is welded at the top of the upper upright post section, a plurality of column top rib plates are arranged at the periphery of the bottom of the top plate and are welded at the top of the side edge of the upper upright post section, and the top plate is welded and fixed with the top of the upper upright post section through a, reduce the pollution influence to the environment, ensure the construction period.

Description

Protective shed and construction method thereof

Technical Field

The invention relates to the technical field of building construction, in particular to a protective shed and a construction method thereof.

Background

In the building construction, in order to ensure that interference to surrounding residents and dust raising and noise pollution are avoided in the construction process, the requirements of a construction period and safe and civilized construction are met, the construction progress is accelerated, the construction continuity is promoted, a temporary shed facility is particularly built at the top of a site to be built, at present, a grid structure and a steel truss structure are mostly adopted, wherein the grid structure cannot allow the arrangement of supporting points with heavier loads at the periphery of a foundation pit under the actual conditions, because the dense distribution of various pipe networks at the periphery of the foundation pit supporting pile does not have enough force points to be used, certain load increasing influence can be generated on the foundation pit supporting pile, the arrangement of multi-point supporting in a deep foundation pit can generate larger influence on the construction operation, the manufacturing cost is relatively high, and the construction period is also longer. The steel truss structure needs an out-of-plane supporting system to form a stable structure, the supporting system does not bear vertical load, and the periphery of the foundation pit of the current project cannot completely form the out-of-plane supporting system, so that the stability is not strong enough, and the problem of insufficient existing protection shed is solved by the suspension cable structural type protection shed.

Disclosure of Invention

The technical task of the invention is to provide a protective shed and a construction method thereof aiming at the defects.

The technical scheme of the invention is realized as follows:

a protective shed comprises a foundation pit, wherein a central upright is arranged at the central position of the foundation pit and comprises an upper upright section and a lower upright section, a first bottom plate is arranged at the bottom of the lower upright section, a plurality of steel pipe piles are arranged at the bottom of the first bottom plate and are welded and fixed with the first bottom plate through a first flange, a plurality of column bottom rib plates are arranged at the periphery of the top of the first bottom plate and are welded at the bottoms of the side edges of a column body of the lower upright section, a pipeline is buried below the lower upright section, a top plate is welded at the top of the upper upright section, a plurality of column top rib plates are arranged at the periphery of the bottom of the top plate and are welded at the tops of the side edges of the upper upright section, the top plate is welded and fixed with the tops of the upper upright section through a third flange, and a sound insulation film, a sound insulation felt and a waterproof canvas are laid at, a base plate is arranged between the upper section of the upright column and the lower section of the upright column, two symmetrical bottom plates II are arranged at two ends of the base plate, and the two bottom plates are welded and fixed through a second flange; and a plurality of anchoring points are arranged on the periphery of the outer side of the foundation pit, the anchoring points are uniformly connected with the flange plate of the flange III through steel wire ropes, and canvas and silencing cotton are arranged above the steel wire ropes.

Preferably, the number of the steel pipe piles is eight, and the diameter of the steel pipe pile is 146 mm.

Preferably, the diameter of the bottom of the central upright post is 1.8 meters, the diameter of the top of the central upright post is 0.9 meters, and the height of the central upright post is 16 meters.

Preferably, the distance between any adjacent anchor points is 1.2 m.

A construction method of a protective shed comprises the following steps:

preparation work: transporting steel members, stacking constructed steel members, retesting positioning axes and leveling points, marking the steel members, hoisting the steel members and protecting the steel members during hoisting;

concrete foundation treatment and member blanking welding: the concrete foundation treatment comprises concrete conveying and pouring, control of commercial concrete transportation, quality management of commercial concrete on a construction site, concrete pouring, concrete test block reserving and concrete maintenance; constructing blanking welding comprises steel member blanking and welding, steel structure installation quality control, high-strength bolt construction quality control and steel structure coating engineering;

the discharge port is reserved: reserving a discharge port at the southeast corner of the construction site, starting from a point A1.9 m away from the southeast corner in the direction of the top slope line to a point B25 m along the north direction of the top slope line, and taking a region enclosed by the point B and a south intersection point C perpendicular to the top slope line as the discharge port;

installing a wind rope: the cable comprises a main cable wind rope, a secondary cable wind rope and a capillary cable wind rope;

laying a ceiling: the ceiling is laid according to a grid structure built by primary and secondary cable wind ropes, and the tarpaulin and the soundproof cotton processed by special processes are spliced according to blocks.

Preferably, the installation sequence of the installation wind rope is the sequence of a main cable wind rope, a secondary cable wind rope and a cable wind rope, wherein the main cable wind rope mainly plays a role in supporting and framing, the secondary cable wind rope weaves the main cable wind rope into a grid shape, and the cable wind rope is matched with the main cable wind rope and the secondary cable wind rope for use.

Preferably, the number of the main cable wind ropes is four, and the main cable wind ropes are all connected with anchoring points which are made in advance outside the foundation pit.

Preferably, the cable wind rope and the ground anchor are tightened by a turn buckle which is adaptive to the tension of the steel wire rope, wherein the sag of the cable wind rope and the cable wind rope is less than 0.01L, the adjustment is carried out in a diagonal mode, and the cable wind rope and the ground anchor cannot be tightened at two adjacent corners simultaneously.

Preferably, before the steel members and the guy cables of the ceiling structure are installed, the connection part of the steel members and the wind cables and the finished film products is checked to have no burrs and bulges, and protective measures are taken for objects which may damage the film materials on the installation site, wherein the installation is not suitable when the wind power is more than four levels or the temperature is lower than 4 degrees.

Preferably, the discharge port is flexibly connected by adopting a steel wire rope with the diameter of 32, and the spacing between anchoring points of the steel wire rope is 1.2 m.

Compared with the prior art, the invention has the advantages and positive effects that: the method can avoid interference to surrounding residents to the greatest extent during construction operation, reduce pollution influence on the environment to the greatest extent, ensure the construction period and play an important role in smooth engineering construction.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a plan view of a distribution of anchor points according to an embodiment of the present invention;

FIG. 2 is an elevation view taken from the direction M of FIG. 1;

FIG. 3 is an elevation view according to the direction N of FIG. 1;

FIG. 4 is a schematic view of the general structure of a center post according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view according to A-A in FIG. 4;

FIG. 6 is a cross-sectional view according to B-B in FIG. 4;

FIG. 7 is a cross-sectional view according to C-C in FIG. 4;

FIG. 8 is a partial enlarged view according to K in FIG. 4;

FIG. 9 is a schematic view of a top plate according to an embodiment of the invention;

FIG. 10 is a schematic view of a flange according to an embodiment of the invention;

FIG. 11 is a schematic view of a backplane according to an embodiment of the present invention;

FIG. 12 is a schematic illustration of a web structure according to an embodiment of the invention;

FIG. 13 is a schematic view of a backplane construction according to an embodiment of the present invention;

FIG. 14 is a schematic view of a lower portion of a column according to an embodiment of the invention;

FIG. 15 is a schematic view of the lower section of a mast according to an embodiment of the invention;

FIG. 16 is a schematic view of an upper section of a column according to an embodiment of the invention;

FIG. 17 is a schematic view of an upper section of a mast according to an embodiment of the invention;

FIG. 18 is an elevation view of an anchor point embedment in accordance with an embodiment of the present invention;

FIG. 19 is a top view of an anchor point embedment in accordance with an embodiment of the present invention;

FIG. 20 is a flowchart of a method of constructing a shelter according to an embodiment of the present invention;

fig. 21 is a schematic view of a spout reservation position according to an embodiment of the present invention;

FIG. 22 is a first illustration of a tarpaulin and sound deadening cotton laid over the entire rope plane in accordance with an embodiment of the present invention;

FIG. 23 is a second illustration of a tarpaulin and sound deadening cotton laid over the entire rope plane in accordance with an embodiment of the present invention;

FIG. 24 is a third illustration of a tarpaulin and sound deadening cotton laid over the entire rope plane in accordance with an embodiment of the present invention;

fig. 25 is a fourth illustration of a tarpaulin and sound damping cotton laid over the entire rope plane according to an embodiment of the invention.

In the figure:

1. a central column; 2. an upper section of the column; 3. a lower section of the upright post; 4. a first bottom plate; 5. steel pipe piles; 6. a first flange; 7. a column bottom rib plate; 8. a top plate; 9. a column top rib plate; 10. a base plate; 11. a second bottom plate; 12. a second flange; 13. an anchoring point; 14. a steel cord.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

The invention is further described with reference to the following figures and specific examples.

In the first embodiment, as shown in fig. 1 to 19, the protection shed according to the embodiment of the invention comprises a foundation pit, a central upright post 1 is arranged at the central position of the foundation pit, the central upright post 1 comprises an upright post upper section 2 and an upright post lower section 3, a bottom plate 4 is arranged at the bottom of the upright post lower section 3, a plurality of steel pipe piles 5 are arranged at the bottom of the bottom plate 4, the steel pipe piles 5 are all welded and fixed with the bottom plate 4 through flanges 6, a plurality of column bottom rib plates 7 are arranged on the periphery of the top of the bottom plate 4, the column bottom rib plates 7 are welded at the bottom of the side edge of the upright post lower section 3, a pipeline is buried below the upright post lower section 3, a top plate 8 is welded at the top of the upright post upper section 2, a plurality of column top rib plates 9 are arranged on the periphery of the bottom of the top plate 8, and the column top rib plates 9 are all welded at, the top plate 8 is welded and fixed with the top of the upper section 2 of the upright column through a third flange, and a sound insulation film, a sound insulation felt and waterproof canvas are laid on the top of the top plate 8, wherein a backing plate 10 is arranged between the upper section 2 of the upright column and the lower section 3 of the upright column, two symmetrical bottom plates 11 are arranged at two ends of the backing plate 10, and the two bottom plates 11 are welded and fixed through a second flange 12; and a plurality of anchoring points 13 are arranged on the periphery of the outer side of the foundation pit, the anchoring points 13 are uniformly connected with the flange plate of the third flange through steel wire ropes 14, and canvas and silencing cotton are arranged above the steel wire ropes 14.

In the second embodiment, the number of the steel pipe piles 5 is eight, the diameter of each steel pipe pile 5 is 146mm, the diameter of the bottom of the central upright column 1 is 1.8 m, the diameter of the top of the central upright column 1 is 0.9 m, the height of the central upright column 1 is 16 m, the distance between any adjacent anchoring points 13 is 1.2m, 8 steel pipe piles with the diameter of 146mm are arranged at the bottom of the central upright column and are embedded below the elevation of the substrate by 2m, flanges I (with the diameter of 2.4 m) at the top and the bottom of each steel pipe pile are tightly welded, the distance between each anchoring point is 1.2m, 300 steel pipe piles are adopted totally, the connection between each anchoring point and the central upright column is uniformly connected to a top flange (with the diameter of 2.3 m) by using a steel wire rope with the diameter of 12.7mm, and the waterproof canvas laid at the top is specially processed and.

In a third embodiment, as shown in fig. 20, the method for constructing a shelter according to the embodiment of the present invention includes the following steps:

step S101: preparation work: transporting steel members, stacking constructed steel members, retesting positioning axes and leveling points, marking the steel members, hoisting the steel members and protecting the steel members during hoisting;

step S103: concrete foundation treatment and member blanking welding: the concrete foundation treatment comprises concrete conveying and pouring, control of commercial concrete transportation, quality management of commercial concrete on a construction site, concrete pouring, concrete test block reserving and concrete maintenance; constructing blanking welding comprises steel member blanking and welding, steel structure installation quality control, high-strength bolt construction quality control and steel structure coating engineering;

step S105: the discharge port is reserved: reserving a discharge port at the southeast corner of the construction site, starting from a point A1.9 m away from the southeast corner in the direction of the top slope line to a point B25 m along the north direction of the top slope line, and taking a region enclosed by the point B and a south intersection point C perpendicular to the top slope line as the discharge port;

step S107: installing a wind rope: the cable comprises a main cable wind rope, a secondary cable wind rope and a capillary cable wind rope;

step S109: laying a ceiling: the ceiling is laid according to a grid structure built by primary and secondary cable wind ropes, and the tarpaulin and the soundproof cotton processed by special processes are spliced according to blocks.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

The specific working process is as follows:

preparation work: 1. transporting the steel member: the components are protected as much as possible in the loading, unloading and transporting processes, and the components are prevented from being damaged in the transporting process; some secondary components such as purlines, supports, corner braces and the like are relatively small in rigidity and relatively large in quantity, and are packed in the transportation process, and are strictly prevented from being scattered in bulk, so that the disorder of shipment is caused; the transported components need to be shipped according to the hoisting requirement program, and matched supply is considered as much as possible, so that smooth hoisting on site is ensured; the components are symmetrically placed on the transport vehicle, and the components are symmetrically operated when the vehicle is loaded or unloaded, so that the vehicle body and the components on the vehicle are fixed; the secondary member and the main member are transported together by loading, and the heavy member is not stacked on the secondary member to cause the compression deformation of the member; the skid should be placed in the component transportation process, the protection work of the four corners of the component should be done when the component is fixed by the steel wire rope, the component is prevented from deforming and cutting off the steel wire rope, and the support should be adopted for stabilizing an unstable component.

2. Stacking the components: the stacking field of the components is smooth, the field base is solid, no weed exists, and no water is accumulated; the stacking of the components needs to use the skid, the skid must be aligned up and down, the stacking height of each pile of components should be respectively controlled according to the condition of the components, the stacking height of the components is generally not more than 1m with secondary components (supports, purlines, wall beams and the like), the heavy and large-scale main components are stacked in a single layer, the components with poor plane rigidity such as trusses are generally stacked vertically, each pile is generally combined by 5 trusses, and the skid is placed between every two trusses; a certain distance (generally 2 m) should be left between each stack of components; if the field site allows, the components can be respectively stacked near the hoisting position according to various models under the condition of ensuring the smooth running of the hoisting machinery and the transport vehicle according to the hoisting sequence and the installation position; the member numbers are preferably placed at the positions with the two ends being highlighted, so that the members can be conveniently found during hoisting.

3. And (5) retesting the positioning axis and the leveling point.

4. Labeling components: before hoisting, a central line and a marking line are made on a steel member, the installation direction of an asymmetric member is marked, the gravity center and a hoisting point are marked on a large member, and the marking can be made by paint with a color different from the coating color of the member, so that the steel member is clear, accurate and striking.

5. Hoisting the component: a truck-type crane is used. The crane has the characteristics of good maneuvering performance and high running speed, but can not run under load, has higher requirement on the field, and is mainly used for loading and unloading components and hoisting single-layer steel structures.

6. Protecting the member during hoisting: wrap angles (formed by included angle steel in the semicircular steel pipes) are arranged at four corners of the component to prevent the steel wire ropes from being broken, a reinforcing shin plate can be additionally arranged at a binding point to prevent the local extrusion damage of the I-shaped or H-shaped steel column, the lattice column is hoisted, and a supporting rod is arranged at the binding point.

Concrete foundation treatment and member blanking welding: cement, water, aggregate, additives and the like used by commercial concrete must meet the standard and relevant regulations, and whether the delivery qualification certificate or test report meets the quality requirement is checked, and the concrete is vibrated to be dense; the method is characterized in that the defects of honeycombs, holes, exposed ribs, gaps, slag inclusion and the like are avoided, in addition, in order to reduce welding stress and prevent welding cracks in the welding process, the welding part is preheated strictly according to the requirements of standards, the whole welding process is heated at any time to ensure the temperature between welding seams and weld one welding seam at a time, after welding is finished, back heating is carried out in time according to the standard requirements, after the steel structure is hoisted in place, design requirement control points such as component positioning axes, elevations and the like are measured and marked, and the quality of the hoisted butt joint is inspected before welding. And installing the temporary supports and the steel wave cables to ensure that the steel roof truss is safe and stable in the construction process.

The discharge port is reserved: and reserving a discharge port at the southeast corner of the construction site, starting from a point A which is 1.9 meters away from the southeast corner in the direction of the top slope line and a point B which is 25 meters away from the southeast corner in the direction of the top slope line, wherein an area which is surrounded by a point B and is perpendicular to the top slope line and a south intersection point C is the discharge port. The specific position is shown in fig. 21.

Installing a guy rope: when the top of the guy cable is fixed on the flange plate, the guy cable is symmetrically arranged on the same horizontal plane, so that the guy cable structurally causes horizontal component force and is in a balanced state. The guy rope and the flange plate are connected by a guy rope buckle to prevent the guy rope of the steel frame from being damaged by shearing, the included angle between the guy rope and the ground is not more than 60 degrees, the lower end of the guy rope is connected with the top end (ground anchor) of a round steel column reserved on a concrete foundation, the guy rope cannot be tied on trees, electric poles or stacked members and other objects, and the guy rope and the ground anchor are tensioned by a turn buckle which is adaptive to the tension of the steel wire rope. The sag of the cable wind rope and the cable wind rope is not more than 0.01L (L is the length of the cable wind rope), the adjustment is carried out on opposite angles without simultaneously tensioning the adjacent two angles, when the cable wind rope needs to change the position, a ground anchor at a preset position is firstly made, and the position of the original cable wind rope can be moved after the stability of a frame body is ensured by adding a temporary cable wind rope; after the temporary guy rope is firmly tied with the ground anchor, the temporary guy rope is removed.

Laying a ceiling: before the steel members and the inhaul cables of the roof structure are installed, the phenomenon that burrs and bulges do not exist at the joints of the steel members and the wind cables and the finished film products is checked, protective measures are taken for objects which may damage the film materials on the installation site, and the roof structure is not suitable for installation when the wind power is more than four levels or the temperature is lower than 4 degrees. During installation, wind speed and wind are required to be paid attention to avoid the vibration phenomenon, rainwater cannot be accumulated in the installation process, and the progress condition of a project is required to be determined according to the rainfall condition.

After soil layer excavation in earlier stage and tubular pile are all finished, adopt independent steel column center to bear in the regional center of site, design principle of peripheral anchorage point dispersion holding power, the design theory of safe environmental protection dustproof and noise reduction, center bearing position top is higher than original place table 3 meters, foundation ditch design bottom elevation is apart from original earth's surface on average about 28 meters, 8 steel-pipe piles are evenly driven downwards into on the rock surface layer at the diameter of 1.8 meters at center bearing position, adopt independent steel column to support at the rock top, the stock rock-entering degree of depth is 2 meters below design bottom elevation, namely the total length is 33 meters. The peripheral anchoring points and the central bearing steel column are connected and paved by steel wire ropes with the diameter phi of 12.7mm, silencing cotton and waterproof canvas are covered on the top of the central bearing steel column for preventing dust raising and reducing noise, and the canvas and the silencing cotton which are processed by a special process are paved above the plane of the whole rope, so that the effects of preventing water and snow, accelerating the melting of snow, reducing noise and the like can be achieved. As shown in fig. 22-25.

The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.

Claims

1. The protective shed is characterized by comprising a foundation pit, wherein a central upright post (1) is arranged at the central position of the foundation pit, the central upright post (1) comprises an upper upright post section (2) and a lower upright post section (3), a first bottom plate (4) is arranged at the bottom of the lower upright post section (3), a plurality of steel pipe piles (5) are arranged at the bottom of the first bottom plate (4), the steel pipe piles (5) are fixedly welded with the first bottom plate (4) through first flanges (6), a plurality of column bottom rib plates (7) are arranged on the periphery of the top of the first bottom plate (4), the column bottom rib plates (7) are welded at the bottom of the side edge of a column body of the lower upright post section (3), a pipeline is buried below the lower upright post section (3), a top plate (8) is welded at the top of the upper upright post section (2), a plurality of column top rib plates (9) are arranged on the periphery of the, the column top rib plates (9) are welded to the top of the side edge of the column body of the column upper section (2), the top plate (8) is fixedly welded to the top of the column upper section (2) through a third flange, a sound insulation film, a sound insulation felt and waterproof canvas are laid on the top of the top plate (8), a backing plate (10) is arranged between the column upper section (2) and the column lower section (3), two symmetrical bottom plates (11) are arranged at two ends of the backing plate (10), and the bottom plates (11) are fixedly welded through a second flange (12); the periphery of the outer side of the foundation pit is provided with a plurality of anchoring points (13), the anchoring points (13) are uniformly connected with the flange plate of the third flange through steel wire ropes (14), and canvas and silencing cotton are arranged above the steel wire ropes (14).

2. A shelter according to claim 1 wherein said steel pipe piles (5) are eight in number and said steel pipe piles (5) have a diameter of 146 mm.

3. A shelter according to claim 1 wherein the diameter of the bottom of said central post (1) is 1.8 meters, the diameter of the top of said central post (1) is 0.9 meters and the height of said central post (1) is 16 meters.

4. A shelter according to claim 1 in which the spacing between any adjacent said anchor points (13) is 1.2 m.

5. A construction method of a protective shed is characterized by comprising the following steps:

6. The method of claim 5, wherein the wind ropes are arranged in the order of main rope, secondary rope and cable rope, wherein the main rope mainly plays a role of supporting and framing, the secondary rope weaves the main rope into a grid shape, and the cable rope is used in cooperation with the main rope and the secondary rope.

7. The construction method of the protective shed according to claim 6, wherein the number of the main cable wind ropes is four and the main cable wind ropes are all connected with anchoring points which are pre-made outside the foundation pit.

8. The method of claim 7, wherein the guy cable and the ground anchor are tightened by a turn buckle adapted to the tension of the wire rope, wherein the sag of the guy cable and the guy cable is less than 0.01L, and the adjustment is performed diagonally without tightening the guy cable and the ground anchor at two adjacent corners.

9. A construction method of a protective shed as claimed in claim 5, wherein before the steel members and the guy cables of the roof structure are installed, the connection between the steel members and the wind cables and the finished product of the film should be checked for the absence of burrs and protrusions, and protective measures should be taken for the objects which may damage the film material on the installation site, wherein the installation is not suitable when the wind power is more than four levels or the air temperature is less than 4 degrees.

10. A construction method of a protective shed according to claim 5, characterized in that steel wire ropes with the diameter of 32 are adopted for soft connection at the discharge port, and the spacing between anchoring points of the steel wire ropes is 1.2 m.