CN215626045U

CN215626045U - Protection frame of construction elevator at foundation trench

Info

Publication number: CN215626045U
Application number: CN202122299142.0U
Authority: CN
Inventors: 张�浩; 雷京川; 周昱阳; 张歆; 孔维丰; 黄冲
Original assignee: BEIJING URBAN CONSTRUCTION ENGINEERING CO LTD
Current assignee: BEIJING URBAN CONSTRUCTION ENGINEERING CO LTD
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-01-25
Anticipated expiration: 2031-09-23

Abstract

A protection frame of a construction elevator at a foundation trench is attached to a main structure and comprises a protection frame foundation and a protection frame, wherein the protection frame comprises vertical rods and horizontal rods, the protection frame foundation is a steel structure base and comprises I-shaped steel main beams and I-shaped steel secondary beams, one ends of the I-shaped steel main beams are erected on a shear wall of the main structure, the other ends of the I-shaped steel main beams are erected on reinforced concrete beams cast on a slope protection pile crown beam in situ, the top surfaces of the reinforced concrete beams are level with the top surfaces of the shear walls of the main structure, and two rows of planting bars are arranged between the reinforced concrete beams and the slope protection pile crown beam; two sides of a flange plate at the end of the I-shaped steel main beam are fixed with a base plate through expansion bolts, and the I-shaped steel secondary beam is vertically laid on the I-shaped steel main beam and is in full-welding connection with the I-shaped steel main beam. The construction elevator protection scaffold is erected on the steel structure base, is suitable for the conditions that construction conditions are limited and the protection scaffold cannot be erected on the ground, accumulates experience for similar projects, and can be used and popularized for similar projects for reference.

Description

Protection frame of construction elevator at foundation trench

Technical Field

The utility model relates to the field of building construction, and particularly belongs to a protective frame of a construction elevator at a foundation trench.

Background

With the progress of society and the continuous improvement of living standard of people, resources available for production and living are less and less, in the process of building construction, particularly in large cities, the available land space for building construction is narrower and narrower, the utilization rate of the building space is continuously improved, the ground height is higher and higher, the foundation burial depth is deeper and deeper, the construction difficulty of parts such as excavation, supporting and precipitation, outer wall waterproof construction, backfilling and the like of a foundation pit is increased, and correspondingly, the requirements on engineering technology are higher and higher. In the implementation process of a shed area reconstruction project, the project is often located in or near an existing building and is close to the distance between the project and the adjacent original building (structure), so that the requirement on partial construction is higher, and meanwhile, a plurality of new problems are faced when the project is arranged on a construction site. For the foundation pit depth great, the place is narrow and small, and the site conditions limit, the construction elevator can only be installed at the foundation pit limit of house building north side, can't effectively install fixedly to the construction elevator's of deep foundation pit department protection frame.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a protective frame for a construction elevator at a foundation trench, and aims to solve the technical problems that in the prior art, the depth of a foundation pit is large, and the construction elevator cannot be quickly and efficiently installed at a narrow place.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a foundation ditch department construction elevator protection frame, construction elevator protection frame is attached to the major structure, including protection frame basis and protection frame, the protection frame includes pole setting and horizon bar, its characterized in that: the protective frame foundation is a steel structure base and comprises an I-steel main beam and an I-steel secondary beam, one end of the I-steel main beam is erected on the shear wall of the main body structure, the other end of the I-steel main beam is erected on a reinforced concrete beam cast in place on the slope protection pile crown beam, the top surface of the reinforced concrete beam is flush with the top surface of the shear wall of the main body structure, two rows of planting bars are arranged between the reinforced concrete beam and the slope protection pile crown beam, and the depth of the planting bars implanted into the slope protection pile crown beam is 15 d; the I-steel main beam is characterized in that two sides of a flange plate at the end of the I-steel main beam are fixed with a base plate through expansion bolts, the I-steel secondary beam is vertically laid on the I-steel main beam and is in full-welding connection with the I-steel main beam, and a reinforcing bar for inserting the vertical rod 21 is welded on the I-steel secondary beam 12.

Further preferably, the vertical faces of the protection frame are sealed by steel plate meshes, the vertical faces of two sides of the protection frame are sealed by fine mesh safety nets, and the scaffold boards are wooden scaffold boards with the thickness of 50 mm.

And furthermore, a steel wire rope is unloaded between the protection frame and the main structure beam, and the steel wire rope is fixed by a buckle after being wound around the beam by a circle from the protection frame and is tied back to the protection frame.

Furthermore, the reinforced concrete beam is 350mm high by 200mm wide by 6600mm long, the transverse spacing of two rows of the embedded bars is 100mm, and the spacing of the vertical adjacent embedded bars is 1000 mm.

Furthermore, the protection frame is fixed with the main structure beam or the main structure parapet through a wall connecting piece, and the wall connecting piece comprises a connecting rod and stop rods arranged on two sides of the main structure beam or the main structure parapet.

In addition, be equipped with horizontal bridging and slant bridging on the protection frame, adjacent horizontal bridging interval is not more than 10 m.

More preferably, the upright rods below the protective frame 40m adopt double upright rods, and the upright rods above the protective frame 40m adopt single upright rods.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

the construction elevator protection scaffold is erected on the steel structure base, is suitable for the conditions that construction conditions are limited and the protection scaffold cannot be erected on the ground, creates conditions for timely inserting key work secondary structure construction, shortens the construction period, saves the construction cost, is safe and reliable, accumulates experience for similar engineering, and can be used and popularized for similar engineering.

Drawings

FIG. 1 is a schematic structural view of a protection frame of a construction hoist at a foundation pit;

FIG. 2 is an enlarged view of part A of FIG. 1;

FIG. 3 is an enlarged view of the portion B of FIG. 1;

fig. 4 is a schematic representation of an i-beam main beam fixing node according to the present invention.

Reference numerals: 1-a protective frame foundation; 11-i-beam main beam; 12-i-beam secondary beam; 13-expansion bolts; 14-a backing plate; 2-a protective frame; 21-erecting a rod; 22-horizontal bar; 23-a steel cord; 24-a connecting rod; 25-a stop lever; 27-oblique cross bracing; 3-a body structure shear wall; 4-a main structural beam; 5-reinforced concrete beam; 6-planting the steel bars; 7-major structure parapet; 8-a construction hoist; 9-head protection shed.

Detailed Description

In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention is further described below.

The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the utility model. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

A protection frame of a construction elevator at a foundation trench is attached to a main structure and comprises a protection frame foundation 1 and a protection frame 2, wherein the protection frame 2 comprises vertical rods 21 and horizontal rods 22, the protection frame foundation 1 is a steel structure base and comprises an I-shaped steel main beam 11 and an I-shaped steel secondary beam 12, one end of the I-shaped steel main beam 11 is erected on a main structure shear wall 3, the other end of the I-shaped steel main beam is erected on a reinforced concrete beam 5 cast on a slope protection pile crown beam 4 in situ, the top surface of the reinforced concrete beam 5 is flush with the top surface of the main structure shear wall 3, two rows of planting ribs 6 are arranged between the reinforced concrete beam 5 and the slope protection pile crown beam 4, and the depth of the planting ribs planted on the slope protection pile crown beam 4 is 15 d; as shown in fig. 4, two sides of a flange plate at the end of an i-beam main beam 11 are fixed by expansion bolts 13 and a base plate 14, an i-beam secondary beam 12 is vertically laid on the i-beam main beam 11 and is fully welded with the i-beam main beam 11, and a reinforcing bar is welded at the position of a vertical rod 21 on the i-beam secondary beam 12.

As a preferred embodiment of the utility model, the vertical surface of the protective frame 2 is sealed by a steel plate mesh, the vertical surfaces of two sides are sealed by a fine mesh safety net, and the scaffold board is a wooden scaffold board with the thickness of 50 mm. Be equipped with wire rope 23 off-load between protection frame 2 and the major structure roof beam (not sign), wire rope 23 is fixed through the buckle after the roof beam circle from protection frame 2 to tie back to protection frame 2, reinforced concrete roof beam 5 size is 350mm height 200mm wide 6600mm long, and the transverse interval of two rows of bar planting 6 is 100mm, and the 6 intervals of vertical adjacent bar planting are 1000 mm.

As a preferred embodiment of the utility model, the protective frame 2 is fixed with the main structure beam or the main structure parapet 7 through a wall connecting piece, the wall connecting piece comprises a connecting rod 24 and stop rods 25 arranged on two sides of the main structure beam or the main structure parapet 7, a horizontal bridging (not marked in the figure) and an oblique bridging 27 are arranged on the protective frame 2, the distance between adjacent horizontal bridging is not more than 10m, the vertical rod 21 below the protective frame 240m adopts double vertical rods, and the vertical rod above 40m adopts a single vertical rod.

The installation method comprises the following steps:

the method comprises the following steps that 350mm height difference exists between a crown beam and a first floor bottom plate of a residential building, a 350 height 200 width concrete beam is cast on the crown beam in advance, the length of the concrete beam is equal to that of a construction elevator foundation, a 4 phi 12 main rib, a phi 8@200 stirrup and a concrete strength grade C30 are arranged in the construction elevator foundation, a steel structure base is installed at the bottom of a protection frame of the construction elevator as a protection frame foundation, the steel structure base consists of a 18# I-steel secondary beam and a 18# I-steel main beam, one end of the main beam is supported on a structural shear wall, the other end of the main beam is supported on a 350mm height 200mm width 6600mm length cast-in-place reinforced concrete beam on a slope protection pile crown beam, the secondary beam I-steel is vertically laid on the main beam I-steel, two sides of lower legs of the secondary beam steel are in full-weld connection with the main beam I-steel, and the height of a weld joint is 4.5 mm; the I-steel is clamped by adopting M12 multiplied by 0 expansion bolts at two sides of the end of the I-steel of the main beam to prevent the I-steel from displacing, a 100mm high thread 18 steel bar is welded at the position of the upright post on the I-steel of the secondary beam, and the position of the steel bar is the same as that of the upright post in the figure and is used for positioning the upright post of the protective frame to prevent the upright post from displacing.

The application has the following technical advantages:

(1) the setting method has no obvious deformation in the later use process, the monitoring result is within the allowable range, and the use requirement is met.

(2) When the method is adopted for erection, the frame body and the ground erection requirement are consistent, but the design and the checking calculation of the steel structure base are required to be made, the steel structure base is ensured to meet the use requirement, the project plan adopting the method is proposed in advance, and the pre-buried crown beam elevation at the position is prepared in advance according to the position of the construction elevator and is properly adjusted to meet the use requirement.

(3) In the prior engineering example, the situation that a protective scaffold is erected on foundation trench backfill soil but sinks in the using process sometimes occurs, the safety of a frame body is influenced, and the text method is adopted in the engineering planning of erecting a protective frame of a construction elevator at the foundation trench backfill soil position to ensure the use safety of the frame body.

(4) The method creates conditions for timely inserting the key work secondary structure construction, shortens two months for workers, and drives the original delayed construction period influenced by epidemic outbreak back again, so that civil engineering is handed over according to the original plan, and detached residents return to homes according to the original plan.

(5) The steel structure base that this application increased, every base cost about 0.6 ten thousand yuan, three total 1.8 ten thousand yuan, and the unit of construction spends villager to remove and settle and take 700 ten thousand yuan monthly, adopts the method of this paper to practice thrift nearly 1400 ten thousand yuan to remove and settle and take, and social and economic benefits are showing.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a foundation ditch department construction elevator protection frame, construction elevator protection frame is attached to the major structure, including protection frame basis (1) and protection frame (2), protection frame (2) are including pole setting (21) and horizon bar (22), its characterized in that: the protective frame foundation (1) is a steel structure base and comprises an I-steel main beam (11) and an I-steel secondary beam (12), one end of the I-steel main beam (11) is erected on the main structure shear wall (3), the other end of the I-steel main beam is erected on a reinforced concrete beam (5) which is cast on the slope protection pile crown beam (4) in situ, the top surface of the reinforced concrete beam (5) is flush with the top surface of the main structure shear wall (3), two rows of planting bars (6) are arranged between the reinforced concrete beam (5) and the slope protection pile crown beam (4), and the depth of the planting bars (6) implanted into the slope protection pile crown beam (4) is 15 d; the I-steel girder comprises an I-steel girder (11), wherein two sides of a flange plate at the end of the I-steel girder (11) are fixed with a base plate (14) through expansion bolts (13), an I-steel secondary beam (12) is vertically laid on the I-steel girder (11) and is fully welded with the I-steel girder (11), and a reinforcing bar for inserting a vertical rod (21) is welded on the I-steel secondary beam (12).

2. The protection frame of the construction hoist at the foundation trench of claim 1, wherein: the vertical surfaces of the protective frame (2) are sealed by steel plate meshes, the vertical surfaces of two sides are sealed by dense mesh safety nets, and the scaffold boards are wooden scaffold boards with the thickness of 50 mm.

3. The protection frame of the construction hoist at the foundation trench of claim 1, wherein: be equipped with wire rope (23) between protection frame (2) and the major structure roof beam, wire rope (23) are fixed through the buckle after protection frame (2) around the roof beam round to tie back to protection frame (2).

4. The protection frame of the construction hoist at the foundation trench of claim 1, wherein: the reinforced concrete beam (5) is 350mm high by 200mm wide by 6600mm long, the transverse spacing of two rows of the embedded bars (6) is 100mm, and the spacing of the vertical adjacent embedded bars (6) is 1000 mm.

5. The protection frame of the construction hoist at the foundation trench of claim 1, wherein: the protective frame (2) is fixed with the main structure beam or the main structure parapet (7) through the wall connecting piece, and the wall connecting piece comprises a connecting rod (24) and stop rods (25) arranged on two sides of the main structure beam or the main structure parapet (7).

6. The protection frame of the construction hoist at the foundation trench of claim 1, wherein: the protective frame (2) is provided with horizontal cross braces and inclined cross braces (27), and the distance between every two adjacent horizontal cross braces is not more than 10 m.

7. The protection frame for the construction elevator at the foundation trench as claimed in any one of claims 1 to 6, wherein: the upright rods (21) below 40m of the protective frame (2) adopt double upright rods, and the upright rods above 40m adopt single upright rods.