CN109837924B - Construction method for intersection part of lattice column and main body structure of foundation pit support - Google Patents
Construction method for intersection part of lattice column and main body structure of foundation pit support Download PDFInfo
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- CN109837924B CN109837924B CN201910094926.4A CN201910094926A CN109837924B CN 109837924 B CN109837924 B CN 109837924B CN 201910094926 A CN201910094926 A CN 201910094926A CN 109837924 B CN109837924 B CN 109837924B
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Abstract
The invention relates to a construction method of a crossing part of a lattice column and a main structure of a foundation pit support, wherein the lattice column is hollow to form an accommodating space, and gaps communicated with the accommodating space are arranged at the side part of the lattice column at intervals, and the construction method comprises the following steps: constructing a main body structure, and enabling the reinforcing steel bars corresponding to the lattice columns in the main body structure to pass through or bypass the accommodating space; mounting a reinforcing batten plate at a position, close to the interleaving part, of the lattice column; a reinforcing structure is erected at the position of the main structure close to the interleaving part; pouring the main body structure to enable the main body structure and the lattice column to form an integral structure; and after the main structure is constructed, removing the corresponding foundation pit supporting structure and cutting the part of the lattice column outside the main structure. The method effectively solves the problem of difficult construction of the interleaved part, avoids leakage hidden danger left by secondary pouring of the beam, the floor slab or the column body, simultaneously ensures that the construction process is safer, ensures the construction quality and improves the construction efficiency, and is simple, convenient and easy to realize.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a construction method of an intersection part of a foundation pit supporting lattice column and a main structure.
Background
In the construction of deep basal pit, its strut form adopts multichannel horizontal braces mostly, at the in-process of later stage major structure construction, when basement major structure construction under one horizontal brace is accomplished and the change between basement outer wall and underground continuous wall props the area and reaches intensity, just can carry out the demolising of this way horizontal brace, consequently in basement major structure work progress, the lattice column that supplies vertical support horizontal brace to often appear alternates in basement major structure's roof beam, floor or cylinder.
The general construction mode of the crossing part of the lattice column and the beam, the floor slab or the frame column is to keep a construction joint for the lattice column to pass through, firstly pour a part of beam, floor slab or column body, remove the lattice column after the main structure exchange supporting belt reaches the strength in the later period, and then pour the construction joint, and the method has larger leakage hidden trouble because more post-pouring construction joints are left; at the moment, the main structure is finished, and only a small amount of transportation tools such as a trolley and the like can be used for transporting cement, so that the construction efficiency is low and the effect is slow; in addition, if the lattice column and the frame column are interleaved, the frame column cannot be post-cast with a construction joint, so that the construction progress is greatly influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a construction method for the intersection part of a foundation pit supporting lattice column and a main structure, solves the problem of difficulty in construction of the intersection part, avoids leakage hidden danger caused by secondary pouring of a beam, a floor slab or a column body, simultaneously ensures that the construction process is safer, ensures the construction quality and improves the construction efficiency, and the method is simple and convenient and is easy to implement.
The technical scheme for realizing the purpose is as follows:
the invention provides a construction method of a crossing part of a lattice column and a main structure of a foundation pit support, wherein the lattice column is hollow to form an accommodating space, and gaps communicated with the accommodating space are arranged at the side part of the lattice column at intervals, and the construction method comprises the following steps:
s11, constructing a main body structure, and enabling reinforcing steel bars corresponding to the lattice columns in the main body structure to penetrate through or bypass the accommodating space;
s12, mounting a reinforcing batten plate at a position, close to the interleaving part, of the lattice column;
s13, supporting a reinforcing structure at a position, close to the interleaving part, of the main structure;
s14, pouring a main body structure to enable the main body structure and the lattice column to form an integral structure;
and S15, after the main structure is completely constructed, removing the corresponding foundation pit supporting structure and cutting the part of the lattice column outside the main structure.
The invention adopts a construction method of the intersection part of a foundation pit supporting lattice column and a main body structure, firstly, the lattice column is installed in a foundation pit, the foundation pit supporting structure is erected at the top of the lattice column, and then the main body structure is constructed, if the main body structure is intersected with the lattice column, reinforcing steel bars at the intersection part of the main body structure pass through or bypass the accommodating space of the lattice column, reinforcing batten plates are installed at the positions of the lattice column, which are close to the main body structure, to reinforce the lattice column, in addition, reinforcing structures are arranged at the positions close to the intersection part to further reinforce the lattice column, and then the main body structure is cast and formed at one time, after the main body structure is completely constructed, the corresponding foundation pit supporting structure is dismantled and the parts of the lattice column, which are positioned outside the main body structure, the problem of difficult construction of the intersection part is solved, the leakage hidden trouble caused by secondary casting of beams, floor slabs or column bodies is avoided, and the construction, the construction quality is guaranteed, the construction efficiency is improved, and the method is simple, convenient and easy to implement.
The construction method for the intersection part of the lattice column and the main structure of the foundation pit support is further improved in the step S11. the main structure is constructed, the reinforcing steel bars corresponding to the lattice column in the main structure pass through or bypass the accommodating space, and the construction method comprises the following steps:
when the major structure is the crossbeam, the reinforcing bar that sets up in this crossbeam is including arranging the main muscle at crossbeam middle part in and being located the angle muscle of crossbeam apex angle department, offers the hole in the position that the lattice column corresponds the angle muscle, and this angle muscle passes from the hole, buckles the main muscle of this crossbeam and passes the accommodation space with main muscle from the clearance that the lattice column corresponds, and then the adjustment makes this main muscle resume the range state before buckling by the main muscle of wearing out in the accommodation space.
The construction method for the intersection part of the lattice column and the main body structure of the foundation pit support is further improved in the step S12, the reinforcing batten plate is arranged at the position, close to the intersection part, of the lattice column, and the construction method comprises the following steps:
and mounting reinforcing batten plates to reinforce the latticed column at positions on the side parts of the latticed column, which are close to the bottom and the top of the cross beam, and the reinforcing batten plates are perpendicular to the latticed column.
The construction method for the intersection part of the lattice column and the main structure of the foundation pit support is further improved in step S13, the main structure is provided with a reinforcing structure close to the intersection part, and the construction method comprises the following steps:
and providing a reinforced steel plate, installing the reinforced steel plate at the position of the latticed column corresponding to the cross beam, and vertically penetrating and arranging the reinforced steel plate between the main ribs of the cross beam.
The construction method for the intersection part of the lattice column and the main structure of the foundation pit support is further improved in the step S11. the main structure is constructed, the reinforcing steel bars corresponding to the lattice column in the main structure pass through or bypass the accommodating space, and the construction method comprises the following steps:
when the major structure is the floor, buckle the reinforcing bar that sets up in the floor and be close to the clearance and make the reinforcing bar pass the accommodation space from the clearance that corresponds, buckle the reinforcing bar that is close to the corresponding lateral part of lattice column and make this reinforcing bar walk around from the accommodation space outward, and then the adjustment is walked around or is passed the reinforcing bar of accommodation space and make this reinforcing bar resume the arrangement state before buckling.
The construction method for the intersection part of the lattice column and the main body structure of the foundation pit support is further improved in the step S12, the reinforcing batten plate is arranged at the position, close to the intersection part, of the lattice column, and the construction method comprises the following steps:
and mounting reinforcing batten plates to reinforce the latticed column at positions on the side parts of the latticed column close to the bottom and the top of the floor slab, wherein the reinforcing batten plates are perpendicular to the latticed column.
The construction method for the intersection part of the lattice column and the main structure of the foundation pit support is further improved in step S13, the main structure is provided with a reinforcing structure close to the intersection part, and the construction method comprises the following steps:
providing a reinforcing steel bar, arranging a reinforcing steel bar parallel to the floor slab on the steel bar close to the top surface and the ground of the floor slab, wherein the reinforcing steel bar is shaped like a Chinese character 'jing', and the reinforcing steel bar surrounds the lattice column.
The construction method for the intersection part of the lattice column and the main structure of the foundation pit support is further improved in the step S11. the main structure is constructed, the reinforcing steel bars corresponding to the lattice column in the main structure pass through or bypass the accommodating space, and the construction method comprises the following steps:
when the main structure is an upright column, the steel bars arranged in the upright column comprise longitudinal steel bars vertically arranged in the upright column and stirrups arranged on the longitudinal steel bars, the longitudinal steel bars positioned at the interleaving part are arranged in the accommodating space, the stirrups close to the gaps are bent to enable the stirrups to penetrate through the accommodating space from the corresponding gaps, the stirrups close to the side parts of the lattice column are bent to enable the stirrups to bypass from the outer side of the accommodating space, and then the stirrups bypassing or penetrating through the accommodating space are adjusted to enable the stirrups to recover the arrangement state before bending;
when the stirrup cannot bypass or pass through the accommodating space, the stirrup is cut off and the end part of the stirrup is welded at the corresponding position of the side part of the lattice column.
The construction method for the intersection part of the lattice column and the main structure of the foundation pit support is further improved in step S13, the main structure is provided with a reinforcing structure close to the intersection part, and the construction method comprises the following steps:
providing a temporary template, after the upright post template is erected, erecting the temporary template on the outer side of the upright post template, and enclosing the temporary template and the upright post template to form a whole or partial temporary pouring space surrounding the lattice column and exposed out of the upright post template;
and pouring concrete into the temporary pouring space to form a concrete thickening layer for burying and fixing the corresponding part of the lattice column, thereby reinforcing the lattice column.
The construction method of the intersection part of the lattice column and the main structure of the foundation pit support is further improved in that after the construction of the stand column is finished and the foundation pit support structure is removed, the concrete thickening layer and the part of the lattice column, which is positioned outside the stand column, are cut off together.
Drawings
Fig. 1 is a front view of a first construction method of an intersection part of a lattice column and a main structure of a foundation pit support according to the first embodiment of the invention.
Fig. 2 is a top view of a first embodiment of the construction method of the intersection part of the lattice column and the main structure of the foundation pit support.
Fig. 3 is a partial sectional view 1-1 in fig. 1 of the construction method of the intersection part of the lattice column and the main structure of the foundation pit support.
Fig. 4 is a front view of a second construction method of the intersection part of the lattice column and the main structure of the foundation pit support according to the embodiment of the invention.
Fig. 5 is a top view of a second embodiment of the construction method of the intersection part of the lattice column and the main structure of the foundation pit support of the invention.
Fig. 6 is a top view of a third embodiment of the construction method of the intersection part of the lattice column and the main structure of the foundation pit support according to the invention.
Fig. 7 is a top view of another embodiment of the method for constructing an intersection of a lattice column and a main structure of a foundation pit support according to the present invention.
Fig. 8 is a flow chart of the construction method of the intersection part of the lattice column and the main structure of the foundation pit support.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the present invention provides a construction method for an intersection portion of a main structure and a foundation pit supporting lattice column, when the main structure is constructed, if the main structure is intersected with the lattice column, a steel bar at the intersection portion of the main structure is passed through or bypasses an accommodating space of the lattice column, a reinforcing batten plate is installed at a position of the lattice column close to the main structure to reinforce the lattice column, a reinforcing structure is further installed at a position close to the intersection portion to reinforce the lattice column, the main structure is cast once, after the main structure is completely constructed, a corresponding foundation pit supporting structure is removed and a portion of the lattice column outside the main structure is cut off, thereby solving the problem of construction difficulty at the intersection portion, avoiding leakage hidden danger left by secondary casting of a beam, a floor slab or a column, simultaneously ensuring construction quality and improving construction efficiency, and the method is simple, convenient and easy to realize. The construction method of the intersection part of the lattice column and the main structure of the foundation pit support of the invention is explained below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a front view of a first embodiment of a construction method of an intersection portion of a foundation pit supporting lattice column and a main body structure according to the present invention. The construction method of the intersection part of the lattice column and the main structure of the foundation pit support according to the present invention will be described with reference to fig. 1.
Referring to fig. 1, in the method for constructing the intersection part of the lattice column and the main structure of the foundation pit support of the present invention, the lattice column 11 is hollow to form an accommodating space, and the side part of the lattice column is provided with a gap 1111 at intervals, which is communicated with the accommodating space, and the method comprises the following steps:
s11, constructing a main body structure, and enabling the steel bars 131 corresponding to the lattice columns 11 in the main body structure to penetrate through or bypass the accommodating space;
step S12 is executed, a reinforcing batten plate 112 is installed at the position, close to the interleaving part, of the lattice column 11;
s13, supporting a reinforcing structure at a position, close to the interleaving part, of the main structure;
s14, pouring a main body structure to enable the main body structure and the lattice column 11 to be in an integral structure;
and S15, after the main structure is completely constructed, removing the corresponding foundation pit supporting structure and cutting the part of the lattice column 11, which is positioned outside the main structure.
As a preferred embodiment of the present invention, with reference to fig. 1, fig. 2 and fig. 3, step s11. constructing a main body structure, where the reinforcing bars 131 corresponding to the lattice columns 11 in the main body structure pass through or bypass the accommodating space, includes:
when the main structure is the cross beam 12, the reinforcing bars 131 penetrating through the cross beam 12 include the main bars 122 arranged in the middle of the cross beam 12 and the corner bars 121 located at the top corners of the cross beam 12, holes 113 are formed in the positions of the lattice columns 11 corresponding to the corner bars 121, the corner bars 121 penetrate through the holes 113, the main bars 122 of the cross beam 12 are bent, the main bars 122 penetrate through the accommodating spaces from the gaps 1111 corresponding to the lattice columns 11, and the main bars 122 penetrating through the accommodating spaces are adjusted to enable the main bars 122 to recover the arrangement state before bending.
Specifically, in step s12, the step of installing the reinforcing batten plate 112 at a position of the lattice column 11 close to the intersection portion includes:
a reinforcing gusset plate 112 is installed at the side of the lattice column 11 near the bottom and top of the cross beam 12 to reinforce the lattice column 11, and the reinforcing gusset plate 112 is perpendicular to the lattice column 11.
Further, step S13. set up reinforced structure in the position that major structure is close to the position of handing over and inserting, include:
reinforcing steel plates 123 are provided, the reinforcing steel plates 123 are installed at positions of the lattice columns 11 corresponding to the cross beams 12, and the reinforcing steel plates 123 are vertically inserted between the main ribs 122 of the cross beams 12.
As another preferred embodiment of the present invention, with reference to fig. 4 and 5, in step s11, constructing a main body structure, and passing the reinforcing bars 131 corresponding to the lattice columns 11 through or around the accommodating space in the main body structure, the method includes:
when the major structure is floor 13, the steel bar 131 that is arranged in floor 13 and is close to gap 1111 is bent so that steel bar 131 passes through the accommodating space from corresponding gap 1111, and the steel bar 131 that is bent and is close to the corresponding lateral part of lattice column 11 is bent so that steel bar 131 bypasses the accommodating space, and then the steel bar 131 that bypasses or passes through the accommodating space is adjusted so that steel bar 131 recovers the arrangement state before bending.
Specifically, in step s12, the step of installing the reinforcing batten plate 112 at a position of the lattice column 11 close to the intersection portion includes:
a reinforcing gusset plate 112 is installed at a side of the lattice column 11 near the bottom and top of the floor slab 13 to reinforce the lattice column 11, and the reinforcing gusset plate 112 is perpendicular to the lattice column 11.
Further, step S13. set up reinforced structure in the position that major structure is close to the position of handing over and inserting, include:
providing a reinforcing steel bar 132, arranging a reinforcing steel bar 132 parallel to the floor slab 13 on the steel bar 131 near the top and bottom surfaces of the floor slab 13, wherein the reinforcing steel bar 132 is shaped like a Chinese character 'jing', and the reinforcing steel bar 132 surrounds the lattice column 11.
As another preferred embodiment of the present invention, with reference to fig. 6 and 7, in step s11, constructing a main body structure, and passing the reinforcing bars 131 corresponding to the lattice columns 11 through or around the accommodating space in the main body structure, the method includes:
when the main structure is the upright column 14, the steel bars arranged in the upright column 14 include longitudinal steel bars 141 vertically arranged in the upright column 14 and stirrups 142 hooped on the longitudinal steel bars 141, the longitudinal steel bars 141 at the interleaving part are arranged in the accommodating space, the stirrups 142 near the gaps 1111 are bent to enable the stirrups 142 to pass through the accommodating space from the corresponding gaps 1111, the stirrups 142 near the side parts of the lattice column 11 are bent to enable the stirrups 142 to bypass the outside of the accommodating space, and then the stirrups 142 bypassing or passing through the accommodating space are adjusted to enable the stirrups 142 to recover the arrangement state before bending;
when the stirrup 142 cannot pass around or pass through the accommodating space, the stirrup 142 is cut off and the end of the stirrup 142 is welded to the corresponding position on the side of the lattice column 11.
Further, step S13. set up reinforced structure in the position that major structure is close to the position of handing over and inserting, include:
providing a temporary template, after the upright post template is erected, erecting the temporary template on the outer side of the upright post template, and enclosing the temporary template and the upright post template to form a whole or partial temporary pouring space surrounding the lattice column 11 and exposed out of the upright post template;
concrete is poured into the temporary casting space to form a concrete thickening layer 143 embedding a corresponding portion of the lattice column 11, thereby reinforcing the lattice column 11.
Specifically, after the construction of the column 14 is completed and the foundation pit supporting structure is removed, the concrete thickening layer 143 and the lattice column 11 located outside the column 14 are cut off together.
As shown in fig. 8, the construction method of the intersection part of the lattice column and the main structure of the foundation pit support of the invention has the following specific construction mode:
processing a lattice column 11, wherein the lattice column 11 is formed by enclosing four angle steels, the four angle steels are provided with a set distance and are fixedly connected with each other through batten plates 111 arranged at intervals, an accommodating space is formed in the hollow interior of the lattice column 11, and gaps 1111 communicated with the accommodating space are formed at the intervals of the side parts of the lattice column 11;
and installing the lattice column 11, and erecting a foundation pit supporting structure at the top of the lattice column 11.
Example one
The latticed column 11 is intersected with the cross beam 12, holes 113 are formed in the positions, corresponding to the angle ribs 121 of the cross beam 12, of angle steel of the latticed column 11, the angle ribs 121 penetrate through the holes 113, and the strength of the cross beam is guaranteed;
if the batten plate 111 of the lattice column 11 is just positioned at the intersection part, the batten plate 111 is cut off, and if the intersection part is just not provided with the batten plate 111, the batten plate 111 does not need to be cut off;
bending the main rib 122 of the cross beam 12 to enable the main rib 122 to pass through the accommodating space from the gap 1111, and further adjusting the main rib 122 to enable the main rib 122 to recover the arrangement state before bending;
if the batten plate 111 of the lattice column 11 at the intersection part is cut off, reinforcing batten plates 112 are additionally arranged at the positions of the lattice column 11 close to the top and the bottom of the cross beam 12 to increase the stability of the lattice column 11;
installing a reinforcing steel plate 123 on the side part of the lattice column 11 perpendicular to the main rib 122, wherein the length of the reinforcing steel plate 123 is equal to the width of the cross beam 12, and the reinforcing steel plate 123 penetrates through the main rib 122 to reinforce the strength of the intersection part of the lattice column 11;
and (3) respectively erecting formworks on the upper part and the lower part of the beam 12 and pouring the beam 12, and after the main structure is completely constructed, removing the foundation pit supporting structure and the part of the lattice column 11, which is positioned outside the beam 12.
Example two
The latticed column 11 is interleaved with the floor slab 13, when the steel bars 131 of the floor slab 13 are bound, if the batten plate 111 of the latticed column 11 is just positioned at an interleaving part, the batten plate 111 is cut off, and if the interleaving part is just not provided with the batten plate 111, the batten plate 111 does not need to be cut off;
if the position of the steel bar 131 is close to the gap 1111, bending the steel bar 131 to enable the steel bar 131 to pass through the accommodating space from the gap 1111, and if the position of the steel bar 131 is close to the side portion of the lattice column 11, bending the steel bar 131 to enable the steel bar 131 to bypass the accommodating space from the side portion of the lattice column 11, and further adjusting the position of the steel bar 131 to enable the part of the steel bar 131 bypassing or passing through the accommodating space to recover the arrangement state before bending;
if the batten plate 111 of the lattice column 11 at the intersection part is cut off, reinforcing batten plates 112 are additionally arranged at the positions, close to the top and the bottom of the floor slab 13, of the lattice column 11 so as to increase the stability of the lattice column 11;
installing reinforcing steel bars 132 in a shape like a Chinese character 'jing' on the plane close to the top and bottom steel bars 131 of the floor slab 13, wherein the reinforcing steel bars 132 surround the lattice columns 11 to enhance the strength of the lattice columns 11 at the intersection parts;
and (3) respectively erecting templates above and below the floor slab 13 and pouring the floor slab 13, and after the main structure is completely constructed, removing the foundation pit supporting structure and the part of the lattice column 11, which is positioned outside the floor slab 13.
EXAMPLE III
The lattice column 11 is interleaved with the upright column 14, if the batten plate 111 of the lattice column 11 is just located at the interleaving part, the batten plate 111 is cut off, if the interleaving part is just without the batten plate 111, the batten plate 111 does not need to be cut off, in this embodiment, the lattice column 11 and the upright column 14 are partially overlapped as an example, and if the lattice column 11 is interleaved with the upright column 14, the implementation method is also similar to that of the embodiment;
cutting off the batten plate 111 at the intersection part of the lattice column 11 and the upright column, penetrating the longitudinal steel bar 141 of the upright column 14 through the accommodating space, if the position of the stirrup 142 is close to the gap 1111, bending the stirrup 142 to allow the stirrup 142 to penetrate through the accommodating space from the gap 1111, if the position of the stirrup 142 is close to the side part of the lattice column 11, bending the stirrup 142 to allow the stirrup 142 to bypass the accommodating space from the side part of the lattice column 11, further adjusting the position of the stirrup 142 to allow the stirrup 142 to bypass or penetrate through the accommodating space to recover the arrangement state before bending, and if the stirrup 142 cannot penetrate or bypass the accommodating space, for example, hoops 142 outside the longitudinal steel bar 141 are hooped, cutting off the position corresponding to the stirrup 142, and welding the end part of the stirrup 142 corresponding to the angle steel of the lattice column 11;
if the gap 1111 of the lattice column 11 is located outside the pillar template, a temporary template is arranged in the gap 1111, that is, the temporary template passes through between two angle steels of the batten plate 111 and surrounds a part of the lattice column 11 located outside the pillar template, that is, the lattice column 11 corresponds to one or two angle steels of the pillar 14;
if the gap 1111 of the lattice column 11 is located inside the corresponding upright post template, a temporary template is set up at the corresponding side of the attached lattice column 11 and surrounds all the lattice columns 11 located outside the upright post template, i.e. all four angle steels of the lattice column 11, the temporary casting space between the temporary template and the upright post template is cast with concrete to form a concrete thickening layer 143, i.e. a reinforcing structure for reinforcing the lattice column 11 is formed, so that the part of the lattice column 11 close to the intersection part is more stable;
pouring the columns 14 in the column templates around the columns 14, and after the main structure is completely constructed, removing the foundation pit supporting structure and the part of the lattice column 11, which is not intersected with the columns 14, and chiseling the pouring space part poured previously, wherein the chiseling difficulty is small and the main structure cannot be influenced because no reinforcing steel bars are arranged in the concrete thickening layer 143.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (3)
1. A construction method for a crossing part of a lattice column and a main structure of a foundation pit support is characterized in that the lattice column is hollow to form an accommodating space, and gaps communicated with the accommodating space are arranged at intervals on the side part of the lattice column, and the construction method comprises the following steps:
s11, constructing a main body structure, wherein reinforcing steel bars corresponding to the lattice columns in the main body structure penetrate or bypass the accommodating space, when the main body structure is a cross beam, the reinforcing steel bars arranged in the cross beam comprise main reinforcing steel bars arranged in the middle of the cross beam and corner reinforcing steel bars positioned at the top corners of the cross beam, holes are formed in the lattice columns corresponding to the corner reinforcing steel bars, the corner reinforcing steel bars penetrate through the holes, the main reinforcing steel bars of the cross beam are bent, the main reinforcing steel bars penetrate through the accommodating space from gaps corresponding to the lattice columns, and the main reinforcing steel bars penetrating through the accommodating space are adjusted to enable the main reinforcing steel bars to restore the arrangement state before bending;
s12, mounting a reinforcing batten plate at the position, close to the interleaving part, of the lattice column;
s13, supporting a reinforcing structure at a position, close to the interleaving part, of the main body structure, providing a reinforcing steel plate, installing the reinforcing steel plate at a position, corresponding to the cross beam, of the lattice column, and vertically penetrating through main ribs of the cross beam;
s14, pouring the main body structure to enable the main body structure and the latticed column to form an integral structure;
and S15, after the main structure is completely constructed, removing the corresponding foundation pit supporting structure and cutting the part of the lattice column outside the main structure.
2. The method of constructing an intersection of a lattice column and a main structure of a foundation pit support according to claim 1, wherein said step S12 is a step of installing a reinforcing batten plate to the lattice column near the intersection, comprising:
and reinforcing batten plates are arranged on the side parts of the latticed column close to the bottom and the top of the cross beam to reinforce the latticed column.
3. A construction method for a crossing part of a lattice column and a main structure of a foundation pit support is characterized in that the lattice column is hollow to form an accommodating space, and gaps communicated with the accommodating space are arranged at intervals on the side part of the lattice column, and the construction method comprises the following steps:
s11, constructing a main body structure, wherein the reinforcing steel bars corresponding to the lattice columns in the main body structure pass through or bypass the accommodating space, when the main body structure is an upright column, the reinforcing steel bars arranged in the upright column comprise longitudinal reinforcing steel bars vertically arranged in the upright column and stirrups hooped on the longitudinal reinforcing steel bars, the longitudinal reinforcing steel bars positioned at the intersection part are arranged in the accommodating space, the stirrups close to the gaps are bent to enable the stirrups to pass through the accommodating space from the corresponding gaps, the stirrups close to the side parts of the lattice columns are bent to enable the stirrups to bypass the outside of the accommodating space, and then the stirrups bypassing or passing through the accommodating space are adjusted to enable the stirrups to restore the arrangement state before bending;
when the stirrup cannot bypass or pass through the accommodating space, cutting off the stirrup and welding the end part of the stirrup at a position corresponding to the side part of the lattice column;
s12, mounting a reinforcing batten plate at the position, close to the interleaving part, of the lattice column;
s13, erecting a reinforcing structure at a position, close to the interleaving part, of the main structure to provide a temporary template, after the upright post template is erected, erecting the temporary template at the outer side of the upright post template, and enclosing the temporary template and the upright post template to form a whole or partial temporary pouring space surrounding the lattice column and exposed out of the upright post template;
pouring concrete into the temporary pouring space to form a concrete thickening layer for embedding and fixing the corresponding part of the latticed column, so as to reinforce the latticed column;
s14, pouring the main body structure to enable the main body structure and the latticed column to form an integral structure;
and S15, after the main structure is completely constructed, removing the corresponding foundation pit supporting structure and cutting the concrete thickening layer and the part of the lattice column outside the main structure.
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| CN114508123A (en) * | 2022-02-08 | 2022-05-17 | 中国建筑第八工程局有限公司 | Cast-in-place concrete slab and lattice column node in deep foundation pit and construction method thereof |
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| CN201031388Y (en) * | 2007-04-19 | 2008-03-05 | 上海市第二建筑有限公司 | Rigidly attached structure connected between steel tube and lattice column |
| CN204326258U (en) * | 2014-12-16 | 2015-05-13 | 深圳市典汉濠建筑工程有限公司 | A kind of angle steel lattice column and concrete girder connection linkage |
| CN104895092B (en) * | 2015-06-02 | 2017-03-15 | 中建四局第六建筑工程有限公司 | The method that a kind of interim lattice column of inner support is used as permanent structure post |
| CN105804242B (en) * | 2016-05-13 | 2018-09-18 | 上海建工二建集团有限公司 | Convenient for the lattice column passed through in contrary sequence method node of column and beam reinforcing bar |
| CN207392209U (en) * | 2017-10-30 | 2018-05-22 | 上海市城市建设设计研究总院（集团）有限公司 | Lattice column batten plate with grid |
| CN207829012U (en) * | 2017-12-12 | 2018-09-07 | 中建二局第三建筑工程有限公司 | A kind of foundation pit support post is constructed with basement bottom board connecting node |
| CN208201914U (en) * | 2017-12-29 | 2018-12-07 | 广州地铁设计研究院有限公司 | One kind is faced forever in conjunction with covered back-digging structure |
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2019
- 2019-01-31 CN CN201910094926.4A patent/CN109837924B/en active Active
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