阅读说明：本技术 一种保护既有塔柱的挡土结构及其施工方法 (Soil retaining structure for protecting existing tower column and construction method thereof ) 是由 金雪峰 李少云 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种保护既有塔柱的挡土结构及其施工方法,所述保护塔柱的外部固定设置有挡墙结构,所述挡墙结构的两侧设置有侧向支顶墙,所述侧向支顶墙的一端固定设置有挡土墙,所述侧向支顶墙的另一端固定设置有支顶墙,本发明涉及建筑技术领域。通过在既有塔柱前设置有方便施工安装的挡土结构来保护塔柱,设置的挡土结构既能保护塔柱的安全,又可快速完成场地建设,使得其具有广泛的使用前景。(The invention discloses a retaining wall structure for protecting an existing tower column and a construction method thereof. The tower column is protected by the soil retaining structure which is convenient to construct and install and arranged in front of the existing tower column, the safety of the tower column can be protected by the soil retaining structure, and site construction can be rapidly completed, so that the tower column has wide application prospect.)

1. The utility model provides a protect retaining structure of existing pylon, includes cushion cap (2), the fixed protection pylon (1) that is provided with on the top surface of cushion cap (2), the fixed pillar (3) that are provided with in bottom four corners department of cushion cap (2), its characterized in that: the external fixation of protection column (1) is provided with retaining wall structure (4), the both sides of retaining wall structure (4) are provided with side direction buttress wall (6), the fixed retaining wall (7) that is provided with of one end of side direction buttress wall (6), the other end of side direction buttress wall (6) is fixed and is provided with buttress wall (5).

2. A soil retaining structure for protecting an existing tower column according to claim 1, wherein: the bearing platform (2) is buried in the soil.

3. A soil retaining structure for protecting an existing tower column according to claim 1, wherein: the support column (3) is buried in the soil.

4. A soil retaining structure for protecting an existing tower column according to claim 1, wherein: the length value of the lateral supporting wall (6) is greater than the width value of the bearing platform (2).

5. A soil retaining structure for protecting an existing tower column according to claim 1, wherein: the length value of the main structure of the retaining wall structure (4) is greater than that of the bearing platform (2).

6. A soil retaining structure for protecting an existing tower column according to claim 1, wherein: the length value of the supporting wall (5) is greater than the thickness value of the retaining wall structure (4).

7. A soil retaining structure for protecting an existing tower column according to claim 1, wherein: the length value of the support column (3) is larger than the height value of the bearing platform (2).

8. A construction method for protecting a soil retaining structure of an existing tower column is characterized in that: the method comprises the following steps:

step S1: prefabricating and constructing a retaining wall (7), a lateral supporting top wall (6), a supporting top wall (5) and a retaining wall structure (4);

step S2: hoisting the retaining wall structure (4), and when the retaining wall structure (4) is hoisted to be close to the foundation roof, a constructor adjusts the retaining wall structure (4) on the ground in the horizontal direction;

step S3: putting the retaining wall structure (4) into the foundation groove and abutting against the supporting top wall (5);

step S4: fixing the retaining wall structure (4);

step S5: and after the retaining wall structure (4) is integrally installed, backfilling the earthwork of the high soil slope, and completing construction of the construction site.

Technical Field

The invention relates to the technical field of buildings, in particular to a soil retaining structure for protecting an existing tower column and a construction method thereof.

Background

In the construction process of the existing site, a tower column with building, electric power or other use functions, an underground foundation for bearing the tower column and the like exist in the site; or side columns of multi-story or high-rise buildings. When site engineering is carried out, these existing towers and their underlying foundations, which are not allowed to be moved and damaged, become the subject of major protection. It has the following disadvantages:

1. as shown in fig. 1, particularly, for the slope soil retaining engineering in the field construction, if the tower column close to the soil slope is not protected, the safety of the tower column will be seriously threatened by the soil pressure and the soil gravity of the slope, and the technical problem is that the safety of the tower column can be protected in the limited construction space, and the field construction can be rapidly completed;

2. the existing prefabricated soil retaining structure has the advantage that when the soil pressure of a higher soil slope is larger, the connection point of the soil retaining structure is easy to form stress concentration and damage.

Disclosure of Invention

The present invention provides a soil retaining structure for protecting an existing tower column and a construction method thereof, which solves the problems presented in the background art.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a protect retaining structure of existing pylon, includes the cushion cap, the fixed protection pylon that is provided with on the top surface of cushion cap, the fixed pillar that is provided with in bottom four corners department of cushion cap, the fixed barricade structure that is provided with in outside of protection pylon, the both sides of barricade structure are provided with side direction buttress wall, the fixed retaining wall that is provided with of one end of side direction buttress wall, the other end of side direction buttress wall is fixed and is provided with buttress wall.

As a further scheme of the invention: the bearing platform is arranged in the soil.

As a further scheme of the invention: the support is disposed within the soil.

As a further scheme of the invention: the length value of the lateral supporting wall is larger than the width value of the bearing platform.

As a further scheme of the invention: the length value of the main structure of the retaining wall structure is greater than the length value of the bearing platform.

As a further scheme of the invention: the length value of the supporting wall is larger than the thickness value of the retaining wall structure.

As a further scheme of the invention: the length value of the supporting column is larger than the height value of the bearing platform.

A construction method for protecting a soil retaining structure of an existing tower column includes the steps of:

step S1: prefabricating and constructing a retaining wall, a lateral supporting wall, a supporting wall and a retaining wall structure;

step S2: hoisting the retaining wall structure, wherein when the retaining wall structure is hoisted to be close to the foundation roof, a constructor adjusts the retaining wall structure on the ground in the horizontal direction;

step S3: lowering the retaining wall structure into the foundation groove and abutting against the supporting wall;

step S4: fixing the retaining wall structure;

step S5: and after the whole retaining wall structure is installed, backfilling the earthwork of the high soil slope, and completing construction of the construction site.

The invention provides a soil retaining structure for protecting an existing tower column and a construction method thereof. Compared with the prior art, the method has the following beneficial effects:

1. according to the invention, the tower column is protected by arranging the soil retaining structure which is convenient to construct and install in front of the existing tower column, and the arranged soil retaining structure can not only protect the safety of the tower column, but also can quickly complete site construction, so that the tower column has wide application prospect.

2. Through the foundation groove, side direction buttress wall and fender apron upper portion, the fixed (following embodiment one) at middle part, the foundation groove, side direction buttress wall is fixed with fender apron upper portion joint (following embodiment two), only local supporting is in the foundation groove at fender apron bottom both ends, if do not set up spiral shell (square) bolt or the fixed fender apron of ear tenon, then keep off native apron self gravity, the very big negative friction resistance of the high slope consolidation production of later stage all transmits to the foundation groove to fender apron in, because the foundation groove atress area is little and weak than general basis, very easily produce stress concentration and destroy, cause the unstability destruction of fender apron. And fix side direction buttress wall and fender apron through setting up spiral shell (side) bolt or ear tenon, can transmit a part of fender apron self gravity and high soil slope to fender apron negative friction resistance to side direction buttress wall through spiral shell (side) bolt or ear tenon, evenly transmit again to side direction buttress wall in the basis of a large tracts of land under, effectively reduced the stress concentration phenomenon of basic recess portion, protected the basic recess not by the crushing.

3. Effectively strengthen the constraining action of side direction buttress wall to the fender board through fixed connection, transfer some fender board mid-span bending moment to side direction buttress wall support department promptly, effectively reduce the fender board mid-span bending moment and amount of deflection (bulging song), avoided the warpage phenomenon of fender board tip, stopped the harmful phenomenon of fender board concrete fracture for its can adopt the fender board of bigger span, the suitability is strong, and protection scope is wider.

4. By arranging the bolt (square) bolt or the lug tenon for fixation, the soil pressure transmitted from a high soil slope is not completely transmitted to the notch of the lateral supporting wall through the end part of the soil retaining plate, but a part of the soil pressure is transmitted to the central part of the lateral supporting wall through the bolt (square) bolt or the lug tenon, so that a dual stress system of jointly bearing the force by the notch and the central part of the lateral supporting wall is formed, and the stress concentration and the damage caused by larger local stress are effectively avoided.

5. Through setting up spiral shell (side) bolt or lug tenon with side direction back-up wall and retaining plate fixed connection, can guarantee even the retaining plate down the foundation recess unstability or when inclining the retaining plate still can suspend in midair in the side direction back-up wall of both sides and be unlikely to empty, win valuable time for follow-up reinforcing the basis except that dangerous.

6. The fixed connection construction of the lateral supporting top wall and the retaining plate is reversible, and when a construction site or a construction scheme is changed, the retaining plate can be disassembled in time, so that the lateral supporting top wall has the advantages of environmental protection and cost saving.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a conventional structure;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a cross-sectional view of the structure of the present invention;

FIG. 4 is a sectional view of an inner structure in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a lateral headwall in embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a lateral headwall in embodiment 1 of the present invention;

fig. 7 is a schematic structural view of a retaining wall in embodiment 1 of the present invention;

fig. 8 is a schematic structural view of a lateral headwall in embodiment 1 of the present invention;

fig. 9 is a schematic view of the retaining wall structure and the installation of the lateral headwall in embodiment 1 of the present invention;

fig. 10 is a schematic structural view of a lateral headwall in embodiment 2 of the present invention;

fig. 11 is a schematic view of a retaining wall structure in embodiment 2 of the present invention;

fig. 12 is a schematic view of the combination of the retaining wall structure and the lateral headwall in embodiment 2 of the present invention;

fig. 13 is a schematic view of the combination of the lateral buttress fastening bolts in embodiment 1 of the present invention.

In the figure: 1. protecting the tower column; 2. a bearing platform; 3. a pillar; 4. a retaining wall structure; 5. supporting a top wall; 6. laterally supporting a top wall; 7. a retaining wall; 8. a base groove.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be given with reference to the accompanying drawings and preferred embodiments.

Please refer to fig. 2-3, a soil retaining structure for protecting an existing tower column includes a bearing platform 2, a protective tower column 1 is fixedly disposed on the top surface of the bearing platform 2, pillars 3 are fixedly disposed at four corners of the bottom of the bearing platform 2, a retaining wall structure 4 is fixedly disposed outside the protective tower column 1, lateral supporting walls 6 are disposed on two sides of the retaining wall structure 4, a retaining wall 7 is fixedly disposed at one end of each of the lateral supporting walls 6, and a supporting wall 5 is fixedly disposed at the other end of each of the lateral supporting walls 6.

Cushion cap 2 sets up inside soil, pillar 3 sets up inside soil, and the length value is greater than the height value of cushion cap 2, guarantees its holistic steadiness ability like this, the length value of side direction buttress wall 6 is greater than the width value of cushion cap 2, protects the both sides of cushion cap 2 like this, increases its stability.

The major structure length value of retaining wall structure 4 is greater than the length value of cushion cap 2, protects the front of cushion cap 2, ensures that cushion cap 2 is whole in retaining wall structure 4's protective range, the length value of buttress wall 5 is greater than retaining wall structure 4's thickness value, makes things convenient for retaining wall structure 4's installation like this to improve retaining wall structure 4's the stability of integral erection.

A construction method for protecting a soil retaining structure of an existing tower column includes the steps of:

step S1: prefabricating and constructing a retaining wall 7, a lateral supporting top wall 6, a supporting top wall 5 and a retaining wall structure 4;

step S2: hoisting the retaining wall structure 4, and when hoisting the retaining wall structure 4 to be close to the foundation roof, a constructor adjusts the retaining wall structure 4 on the ground in the horizontal direction;

step S3: lowering the retaining wall structure 4 into the foundation groove and abutting against the supporting top wall 5;

step S4: fixing the retaining wall structure 4;

step S5: and after the whole retaining wall structure 4 is installed, backfilling the earthwork of the high soil slope, and completing construction of the construction site.

The first embodiment is as follows:

as shown in fig. 4 to 9, when the side line of the construction slope is close to the existing protective tower column 1, the side slope retaining wall 7 stops after being away from the existing tower column within a certain range, the range is comprehensively determined by combining the size of the pile foundation cap 2 under the existing tower column with the size of the foundation of the side slope retaining wall 7, and the foundation of the side slope retaining wall 7 cannot be overlapped with the pile foundation cap 2 under the tower column. The side slope retaining wall 7 is constructed immediately after the stop and is a retaining plate lateral supporting wall 6 vertical to the side slope retaining wall 7, the thickness of the lateral supporting wall 6 is 2 times that of the side slope retaining wall 7, a notch of the lateral supporting wall 6 is constructed at a position 0.3m away from the upper side line of the pile foundation bearing platform 2 under the tower column, the notch penetrates into the lateral supporting wall 6 by 2/3 times of the thickness of the lateral supporting wall 6, and the length of the upper edge of the notch of the lateral supporting wall 6 is not less than the thickness of a hidden beam of the retaining plate and is not more than 0.3 m. 6 notches of side direction buttress wall department sets up two and wears fixing bolt holes, and the hole diameter is long bolt diameter +4mm, and the hole position does: the center of the first hole is 1m away from the top surface of the supporting wall 5, and the center of the second hole is positioned at the center height of the supporting wall 5 (soil retaining plate);

the position of the notch of the lateral branch top wall 6 is an important area for supporting the stress of the retaining plate, the technical requirement is that the longitudinal steel bar is hooped by the stirrup at the position to form a mode that two embedded columns are superposed into a branch top wall 5 or a lateral branch top wall 6, the lateral branch top wall 6 formed by the mode has better integrity and higher notch bearing capacity;

the reinforced concrete retaining plate is hung in the groove with the finished foundation and is close to the position of the notch of the lateral supporting wall 6, and the lifting of the retaining plate is limited because no other concave-convex structure points exist in the notch area of the lateral supporting wall 6, so that the retaining plate can be conveniently lifted to the position close to the top surface of the foundation on the bottom surface, a constructor can smoothly push the retaining plate into the groove 8 of the foundation on the ground and is close to the notch of the lateral supporting wall 6, at the moment, the bolt is penetrated and fixed by utilizing the notch of the lateral supporting wall 6 and the fixing bolt hole reserved by the hidden beam of the retaining plate, and the mounting and fixing of the retaining plate can be finished, so that the retaining plate is convenient to construct and lift, has extremely small error, and is smooth and convenient;

and after the construction of all soil retaining structures is completed, backfilling high slope earthwork to form a required slope construction site, and effectively protecting the existing tower columns. Local areas at two ends of the retaining plate are supported on the foundation of the supporting top walls 6 on two sides, and the rest parts do not need to be provided with a foundation, so that the vertical supporting stability of the retaining plate is fully ensured, and the characteristics that the gravity of the retaining plate is smaller and the horizontal pressure of the supporting side soil slope is large are utilized. The technology has the advantages of quick construction, simple method and obvious effect, and can be operated in a limited space;

the fixing screw holes are reserved in the hidden beams on the side faces of the retaining plates, the holes are oblong for avoiding construction errors, the depth of the holes is 300mm, and the hole diameter is plus 6 mm. The center of the first hole is 1m below the top surface of the plate, and the center of the second hole is positioned at the center of the hidden beam of the soil retaining plate;

in order to ensure the integrity, the stress performance and the lifting safety of the retaining plate, the reinforced concrete hidden beams are arranged around the retaining plate, and the size of the hidden beams is 2 times of the thickness of the retaining plate multiplied by 600 mm. The middle area of the peripheral hidden beams is provided with a retaining plate, and the plate thickness is 0.5 time of the thickness of the hidden beams. The thickness of the retaining plate is effectively reduced, the weight of the retaining plate is reduced, building materials are saved, and meanwhile, the integrity and the stress performance of the retaining plate are further enhanced due to the existence of the peripheral hidden beams;

the size of the reserved hole of the lateral supporting top wall 6 is +4mm of the diameter of the bolt, and the center position of the hole is the same as the position of the reserved hole on the hidden beam of the retaining plate. Two steel base plates are embedded in the concrete on the double-sided layers of the lateral supporting wall 6 in advance, the size of the hole of each steel base plate is matched with the fixed bolt, the hole of each steel base plate is superposed with the reserved hole of the lateral supporting wall 6, and the inner circular hole of each steel base plate is internally screwed so that the bolt can rotate in the double steel base plates to move forward. After the retaining plate is hoisted in place, the retaining plate can be screwed and fixed by using the fixing bolt, and the installation is convenient and rapid.

Wherein, as shown in fig. 13, a form of fastening square bolt is adopted: the periphery of the fastening square bolt is a square steel pipe, a round steel pipe is arranged in the square steel pipe, concrete is filled between the square steel pipe and the round steel pipe, and particularly, the built-in round steel pipe extends out of a filling surface by 150mm to form a fastening square bolt handle. This kind of mode utilizes square steel pipe as exterior sheathing, circular steel tube as built-in template, and it is very convenient at its middle concreting to make square steel pipe, circular steel tube and middle concrete form a atress wholly, effectively strengthened the wholeness and the atress performance of square bolt, simultaneously built-in circular steel tube inboard hollow, do not fill the concrete, not only effectively alleviateed square bolt self weight, the grab handle of stretching out by built-in circular steel tube has more made things convenient for constructor fastening operation moreover, all the other modes are all the same.

Example two

As shown in fig. 10 to 12, unlike the retaining plate fixed by bolts, when the retaining plate is prefabricated, fixing lugs are provided in the middle regions of both ends of the top of the retaining plate, the fixing lugs are provided on the top of the retaining plate, have a width of 1/3 times the thickness of the retaining plate, have a length equal to the thickness of the recess of the lateral retaining wall 6, and have a height equal to the height of the foundation groove 8 of the lateral retaining wall 6.

The 6 notch regions of side direction top-supporting wall set up fixed fourth of twelve earthly branches, and fixed fourth of twelve earthly branches horizontal position is with the fixed ear tenon of fender apron, and horizontal width is fixed ear tenon width +10mm, and the degree of depth is with fixed ear tenon height.

The structure of the reinforced concrete retaining plate fixing lug tenon is as follows: the reinforcement cage is formed by combining stirrups and reinforcements. The reinforcing bar inserts and is no less than 800mm in the fender board, and the reinforcing bar end is buckled in opposite directions, and the stirrup interval is 100mm, all sets up the stirrup in the reinforcing bar full length within range, and the ear tenon reinforcement is built with the fender board concrete after accomplishing together, and it is convenient to be under construction, and more can guarantee ear tenon and fender board wholeness, and the atress performance is better.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.