CN110904952A - Horizontal bearing reinforcement for soft soil foundation filling pile - Google Patents

Horizontal bearing reinforcement for soft soil foundation filling pile Download PDF

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Publication number
CN110904952A
CN110904952A CN201911229415.5A CN201911229415A CN110904952A CN 110904952 A CN110904952 A CN 110904952A CN 201911229415 A CN201911229415 A CN 201911229415A CN 110904952 A CN110904952 A CN 110904952A
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reinforcement cage
reinforcement
cast
horizontal bearing
plate
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CN110904952B (en
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徐学勇
欧阳霖亮
石贤
蔡星
陈记文
张开新
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Dacheng Science And Technology Innovation Construction Group Co ltd
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Dacheng Kechuang Infrastructure Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
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  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses a horizontal bearing reinforcement of a soft soil foundation filling pile, which comprises a reinforcement cage which is placed into a foundation pit, and a horizontal bearing device which is circumferentially arranged along the outer side of the reinforcement cage and is used for forming a circumferential rigid support so as to reinforce the circumferential stress of the filling pile in the soft soil foundation. The technical scheme has the technical effects of stable structure and stable circumferential protection effect, and can be widely applied to the field of building construction support.

Description

Horizontal bearing reinforcement for soft soil foundation filling pile
Technical Field
The invention relates to the field of building construction support. More particularly, the invention relates to a horizontal bearing reinforcement of a soft soil foundation filling pile.
Background
In the building construction, the bored concrete pile is as the basic building body of ground, the stability and the bearing capacity of its structure will directly determine superstructure's stability and basic nature, especially in the foundation bored concrete pile construction of soft soil nature, its circumferential safeguard measure is very important, the bored concrete pile of soft soil foundation among the prior art all has the poured ground unstability always, can cause the aversion of bored concrete pile and phenomenons such as rock through outside extrusion, and then influence superstructure's stability.
Disclosure of Invention
The invention aims to provide a horizontal bearing reinforcement of a soft soil foundation cast-in-place pile, which has a stable structure and a stable circumferential protection effect.
To achieve these objects and other advantages in accordance with the purpose of the invention, a horizontal bearing reinforcement for a soft soil foundation cast-in-place pile is provided, which includes a reinforcement cage lowered into a foundation pit, a horizontal bearing means provided along an outer circumference of the reinforcement cage for forming a circumferential rigid support to reinforce a circumferential stress of the cast-in-place pile in the soft soil foundation.
Preferably, the horizontal bearing device comprises a plurality of layers of annular wing plates which are sleeved on the upper and lower sides of the outer side wall of the steel reinforcement cage; the wing plates are all provided with a plurality of wing plates,
the plurality of sub-plates are arranged in an equidistant mode and are arranged in a circular ring shape, every two adjacent wing plates are connected through an elastic connecting piece, and the upper end of each sub-plate is correspondingly hinged to the connecting position of the reinforcement cage.
Preferably, a limiting block is arranged at one side of the upper end of each sub-plate close to the reinforcement cage, so that the lower part of each sub-plate is opened at an angle.
Preferably, the horizontal bearing device further comprises,
the plurality of push plates are circumferentially arranged on the inner wall of the reinforcement cage at equal intervals, and the lower end of each push plate is correspondingly hinged with the reinforcement cage;
and the stress rods are uniformly and fixedly arranged on the plane of each push plate towards the outer side of the steel reinforcement cage, and one ends of all the stress rods, which are far away from the push plates, are sharp tops with gradually reduced diameters and extend out of the steel reinforcement cage to be inserted into the soft soil.
Preferably, a pull ring is arranged on a plane, away from the steel reinforcement cage, of the middle of the lower portion of each branch plate, the pull ring is connected with one end of a traction rope, the other end of the traction rope stretches into the steel reinforcement cage, the pull rope is tightened and straightened through a vertically arranged traction rod, and a pulley capable of freely rotating is arranged on a portion, contacting with the outer wall of the traction rope, when the traction rope stretches into the steel reinforcement cage.
Preferably, a plurality of material receiving hoppers with upward openings are arranged on the rod body of the traction rod in a vertically staggered manner;
the traction rod is a thickened steel bar or an alloy metal rod.
Preferably, each stress rod is provided with a pull-back part on the rod body of the outer side part of the reinforcement cage, the pull-back part is used for hooking the reinforcement cage to form fixation, the pull-back part comprises,
the steel bar cage comprises an upper base plate and a lower base plate, wherein one end of the upper base plate and one end of the lower base plate are mutually hinged, a plurality of springs are arranged between opposite planes at the other ends of the upper base plate and the lower base plate, the lower base plate is fixedly arranged on the stress rod, and the end, far away from the hinge joint, of a pull-back part on the stress rod is arranged right opposite to the.
Preferably, the lower base plate is provided with a protection plate on the upper surface of the outer side of the spring, and the height of the protection plate is less than one third of the height of the spring.
Preferably, one end of the upper base plate and one end of the lower base plate, which are close to the hinge joint, are provided with a limiting plate, and the limiting plate is used for limiting the position of the upper base plate exceeding the spring at the normal extension height.
The invention at least comprises the following beneficial effects:
1. the structure is stable, forms the circumference stress support in pouring of concrete bored concrete pile, and the steadiness of vertical structure and the whole body soil body in the soft soil matter of reinforcing, and through the pterygoid lamina of circumference setting on the steel reinforcement cage lateral wall, during the soil body of the side is corresponded in the embedding of pouring in-process, then forms the integral structure with peripheral soil body.
2. The multiple horizontal bearing device of different levels still includes the stress pole that circumference set up, and the stress pole has itself small, and its sharp top structure easily pierces through's characteristic, so, is particularly suitable for the environment of pouring of soft soil foundation.
3. Articulated connected mode can adapt to the soft soil foundation of different intensity to and the elastic connection mode between the double-phase adjacent pterygoid lamina can make when pouring, every divides the board and is opening the peripheral soil body in-process of embedding, can form different opening according to the softness and hardness of this soil property, and suitability and practicality are all stronger.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a structural view of a horizontal bearing reinforcement of a soft soil foundation filling pile of the present invention;
FIG. 2 is a top view of the horizontal load-bearing reinforcement of the soft soil foundation cast-in-place pile of the present invention;
FIG. 3 is a block diagram of the horizontal carrier of the present invention;
FIG. 4 is a view showing the construction of the pull-back portion of the present invention;
FIG. 5 is a connection structure view of a traction rope, a traction rod, a pulley and a branch plate according to the present invention;
the specification reference numbers indicate: 1. the steel reinforcement cage, 2, pterygoid lamina, 3, minute board, 4, elastic connection spare, 5, push pedal, 6, stress pole, 7, the portion of drawing back, 8, haulage rope, 9, traction lever, 10, pulley, 11, pull ring, 701, spring, 702, guard plate, 703 limiting plate.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-5, a horizontal bearing reinforcement for a soft soil foundation cast-in-place pile comprises a reinforcement cage 1 which is placed in a foundation pit, a horizontal bearing device which is circumferentially arranged along the outer side of the reinforcement cage 1 and is used for forming circumferential rigid support to reinforce circumferential stress of the cast-in-place pile in the soft soil foundation.
In the technical scheme, the cast-in-place pile is easy to extrude and displace in a soft soil foundation under the compression environment of a certain side, so that the cast-in-place pile inclines, the foundation support is unstable, and the construction of an upper building is influenced, therefore, when the cast-in-place pile is formed and poured, a horizontal bearing device is arranged on the outer side of the cast-in-place pile and used for enhancing the circumferential stress of the cast-in-place pile so that the cast-in-place pile and the surrounding soil body form an integrated connecting structure;
during the setting, bear the device with the level and set up along 1 circumference of steel reinforcement cage and finish the back, transfer 1 level of steel reinforcement cage to the foundation ditch in again.
The cast-in-place pile pouring construction method based on the technical scheme has the advantages that the size requirement is met on the construction diameter of the foundation pit, the diameter of the foundation pit is slightly enlarged on the basis of the diameter of the preset cast-in-place pile, a reserved space is reserved for contact and embedding of the horizontal bearing device and the surrounding soil body, and after construction is completed, the cast-in-place pile and the reserved space on the inner side of the foundation pit are buried.
As shown in fig. 2, in another technical solution, the horizontal bearing device includes a plurality of annular wing plates 2 arranged up and down on the outer side wall of the reinforcement cage 1; the wing plates 2 each comprise a plurality of,
the plurality of sub-plates 3 are arranged in an equidistant mode and are arranged in a circular ring shape, every two adjacent wing plates 2 are connected through an elastic connecting piece 4, and the upper end of each sub-plate 3 is correspondingly hinged to the connecting position of the reinforcement cage 1.
In another technical scheme, a limiting block is arranged at one side of the upper end of each sub-plate 3 close to the reinforcement cage 1, so that the lower part of each sub-plate 3 is opened at an angle.
In above-mentioned technical scheme, enclose through a plurality of minute boards 3 and establish cyclic annular circumference and articulate the lateral wall at steel reinforcement cage 1, and connect through elastic connection spare 4 between every two adjacent minute boards 3 of all minute boards 3, when pterygoid lamina 2 opens according to the size of foundation ditch, form stretch-draw space through elastic connection spare 4, in order to adapt to the foundation ditch of different diameter sizes, pterygoid lamina 2 is kept away from in steel reinforcement cage 1's one end inserts the weak soil that corresponds the side, form circumference and strut, in order to strengthen steel reinforcement cage 1's circumference stress, pour the back, steel reinforcement cage 1 is poured the shaping by an organic whole and is the bored concrete pile.
In another technical solution, as shown in fig. 3, the horizontal bearing device further includes,
the push plates 5 are circumferentially and equidistantly arranged on the inner wall of the reinforcement cage 1, and the lower end of each push plate 5 is correspondingly hinged with the reinforcement cage 1;
and the stress rods 6 are uniformly and fixedly arranged on the plane of each push plate 5 facing the outer side of the steel reinforcement cage 1, and one ends of all the stress rods 6, which are far away from the push plates 5, are sharp tops with gradually reduced diameters and extend out of the steel reinforcement cage 1 to be inserted into the soft soil.
In the above technical scheme, the lower extreme setting of a plurality of push pedals 5 is inboard at steel reinforcement cage 1, the upper end of push rod forms weight towards the 1 central direction free fall of steel reinforcement cage, and the perpendicular fixed connection of one end of stress pole 6 is on the side of keeping away from steel reinforcement cage 1 center in the upper end of push rod, so the pole body of stress pole 6 forms the friction with the lateral wall of steel reinforcement cage 1, the upper end that makes push pedal 5 is certain angle and fixes towards the central direction of steel reinforcement cage 1, when steel reinforcement cage 1 begins to pour the concrete, the face of pouring on that the concrete can rise gradually, rise to the bottom plate of push pedal 5 until, and then the upper end orientation that promotes push pedal 5 is kept away from steel reinforcement cage 1 side and is removed, and then promote in the soft soil of push rod slowly inserting corresponding side, form.
As shown in fig. 5, in another technical solution, a pull ring 11 is disposed on a plane of the middle portion of the lower portion of each plate 3 away from the steel reinforcement cage 1, the pull ring 11 is connected with one end of a pull rope 8, the other end of the pull rope 8 extends into the steel reinforcement cage 1, the pull rope is tightened and straightened through a vertically disposed pull rod 9, and a pulley 10 capable of freely rotating is disposed on a portion of the pull rope 8 contacting with the outer wall of the steel reinforcement cage 1 when the pull rope extends into the steel reinforcement cage.
In another technical scheme, a plurality of material receiving hoppers with upward openings are arranged on the rod body of the traction rod 9 in a vertically staggered manner;
the traction rod 9 is a thickened steel bar or an alloy metal rod.
In above-mentioned technical scheme, in order to make pterygoid lamina 2 can open and imbed the weak soil around more smoothly, divide board 3 through the one end pulling of haulage rope 8, the other end hangs down to draw 1 inboard side of steel reinforcement cage and utilizes the haulage rod 9 dead weight to make pterygoid lamina 2 circumference open to set up a plurality of openings connecting hoppers up along the direction of height on the pole body of haulage rod 9, when the concrete falls into connecting hopper, can increase its weight, the tenesmus pulling haulage rope 8, and then the branch board 3 of pulling, make it open.
The size of the receiving hopper can be designed according to the force required by lifting the wing plate 2.
In another technical scheme, as shown in fig. 4, each stress rod 6 is provided with a pull-back portion 7 on the rod body of the outer part of the reinforcement cage 1, for hooking the reinforcement cage 1 to form a fixation, the pull-back portion 7 includes,
the steel reinforcement cage comprises an upper base plate and a lower base plate, wherein one end of the upper base plate and one end of the lower base plate are hinged with each other, a plurality of springs 701 are arranged between opposite planes at the other ends of the upper base plate and the lower base plate, the lower base plate is fixedly arranged on the stress rod 6, and one end, far away from the hinge, of a pull-back portion 7 on the stress rod 6 is arranged right opposite to the.
In the above technical solution, the pull-back portion 7 is provided to prevent the pull rod 9 from extending back toward the reinforcement cage 1 during the insertion of the soft soil.
In another technical solution, a protection plate 702 is disposed on the upper surface of the lower base plate on the outer side of the spring 701, and the height of the protection plate 702 is less than one third of the height of the spring 701.
In the above technical solution, when the pull-back portion 7 hooks the outer sidewall of the reinforcement cage 1, it will contact the protection plate 702 first to form a rigid interference surface.
In another technical solution, a limit plate 703 is disposed at one end of the upper plate and the lower plate close to the hinged end, and the limit plate 703 is used for limiting the position of the upper plate exceeding the position of the spring 701 at the normal extension height.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (9)

1.一种软土地基灌注桩水平承载增强体，包括下放至基坑内的钢筋笼，其特征在于，沿所述钢筋笼外侧周向设置的水平承载装置，用于形成周向的刚性支护以增强灌注桩在软土地基内的周向应力。1. a soft soil foundation cast-in-place pile horizontal load-bearing reinforcement, comprising a reinforcement cage lowered into the foundation pit, it is characterized in that, the horizontal load-bearing device arranged along the outer circumferential direction of the reinforcement cage is used to form a circumferential rigid support In order to enhance the circumferential stress of cast-in-place piles in soft soil foundation. 2.根据权利要求1所述的软土地基灌注桩水平承载增强体，其特征在于，所述水平承载装置包括套设在钢筋笼外侧壁上下设置的若干层环形的翼板；所述翼板均包括，2 . The horizontal bearing reinforcement of a cast-in-place pile on a soft soil foundation according to claim 1 , wherein the horizontal bearing device comprises several layers of annular wing plates that are sleeved on the outer side wall of the reinforcement cage; the wing plates both include, 若干分板，等距排列设置为圆环状，且每相邻两翼板之间通过弹性连接件连接，每个分板的上端都对应铰接于所述钢筋笼的连接位置。A plurality of sub-plates are arranged in an equidistant arrangement in an annular shape, and each adjacent two wing plates are connected by elastic connectors, and the upper end of each sub-plate is correspondingly hinged to the connection position of the reinforcement cage. 3.根据权利要求2所述的软土地基灌注桩水平承载增强体，其特征在于，每个所述分板的上端靠近钢筋笼的一面位置设置有限位块，使分板的下部分呈角度张开。3. The horizontal bearing reinforcement of cast-in-place piles on soft soil foundations according to claim 2, characterized in that, a limit block is set at the upper end of each of the sub-boards close to one side of the reinforcement cage, so that the lower part of the sub-board is angled open. 4.根据权利要求1所述的软土地基灌注桩水平承载增强体，其特征在于，所述水平承载装置还包括，4. The horizontal bearing reinforcement of soft soil foundation cast-in-place piles according to claim 1, wherein the horizontal bearing device further comprises: 若干推板，其周向等距设置在所述钢筋笼的内壁，且每个推板的下端都对应与所述钢筋笼形成铰接；A plurality of push plates are arranged on the inner wall of the reinforcement cage at equal distances in the circumferential direction, and the lower end of each push plate is correspondingly hinged with the reinforcement cage; 若干应力杆，其均匀固设于每个推板朝向钢筋笼外侧的平面上，所有应力杆远离推板的一端为直径逐渐减小的尖顶部，并伸出钢筋笼插入至软土内。A number of stress rods are evenly fixed on the plane of each push plate facing the outside of the reinforcement cage, and one end of all the stress rods away from the push plate is a pointed top with a gradually decreasing diameter, which extends out of the reinforcement cage and is inserted into the soft soil. 5.根据权利要求2所述的软土地基灌注桩水平承载增强体，其特征在于，每一个分板的下部分中部远离钢筋笼的平面上均设置有一拉环，且该拉环连接一牵引绳的一端，牵引绳的另一端伸入钢筋笼内通过一竖直设置的牵引杆使拉绳绷紧拉直，且牵引绳伸入钢筋笼时与其外壁接触的部分设置一可自由转动的滑轮。5 . The horizontal bearing reinforcement of cast-in-place piles on soft ground according to claim 2 , wherein a pull ring is provided on the plane of the lower part of each sub-plate away from the reinforcement cage, and the pull ring is connected to a traction One end of the rope, the other end of the traction rope extends into the reinforcement cage through a vertically arranged traction rod to tighten and straighten the rope, and the part of the traction rope that contacts the outer wall of the reinforcement cage is provided with a freely rotatable pulley. . 6.根据权利要求5所述的软土地基灌注桩水平承载增强体，其特征在于，沿所述牵引杆的杆身上上下交错设置若干开口向上的接料斗；6 . The horizontal bearing reinforcement of a cast-in-place pile in soft soil according to claim 5 , wherein a plurality of hoppers with upward openings are staggered up and down along the body of the drawbar; 6 . 牵引杆为加粗的钢筋或者合金金属杆。The drawbar is a thickened steel bar or an alloy metal bar. 7.根据权利要求4所述的软土地基灌注桩水平承载增强体，其特征在于，每个所述应力杆位于钢筋笼外侧部分的杆身上设置有回拉部，其用于勾住钢筋笼形成固定，所述回拉部包括，7 . The horizontal bearing reinforcement of cast-in-place piles on soft ground according to claim 4 , wherein each of the stress rods is provided with a pullback portion on the rod body of the outer part of the reinforcement cage, which is used for hooking the reinforcement cage. 8 . to form a fixation, the pull-back portion includes, 一端相互铰接的上底板和下底板，另一端相对平面之间设置若干弹簧，所述下底板固定设置在所述应力杆上，位于所述应力杆上的回拉部远离铰接的一端正对所述钢筋笼设置。The upper bottom plate and the lower bottom plate are hinged to each other at one end, and several springs are arranged between the opposite planes at the other end. Describe the reinforcement cage setup. 8.根据权利要求7所述的软土地基灌注桩水平承载增强体，其特征在于，所述下底板位于弹簧的外侧上表面上设置一防护板，且该防护板的高度低于弹簧高度的三分之一。8 . The horizontal bearing reinforcement of cast-in-place piles on soft ground according to claim 7 , wherein a protective plate is provided on the upper surface of the outer side of the spring on the lower bottom plate, and the height of the protective plate is lower than the height of the spring. 9 . one third. 9.根据权利要求7所述的软土地基灌注桩水平承载增强体，其特征在于，所述上底板和下底板靠近铰接的一端设置有一限位板，该限位板位用于限制所述上底板超过所述弹簧在正常伸长高度时的位置。9 . The horizontal bearing reinforcement of cast-in-place piles on soft ground according to claim 7 , wherein a limit plate is provided at the hinged ends of the upper bottom plate and the lower bottom plate, and the limit plate is used to limit the said 9 . The upper base plate exceeds the position of the spring at its normal extended height.
CN201911229415.5A 2019-12-04 2019-12-04 A kind of horizontal bearing reinforcement of cast-in-place piles in soft soil foundation Active CN110904952B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0730550B2 (en) * 1992-02-14 1995-04-05 大亜ソイル株式会社 How to build foundation piles
CN101899829A (en) * 2010-07-22 2010-12-01 浙江中隧桥波形钢腹板有限公司 Evaginable wing plate hollow steel pipe pile
CN205329688U (en) * 2016-01-12 2016-06-22 山东科技大学 Resistance -increasing slip casting stock
CN106087987A (en) * 2016-08-12 2016-11-09 中国地质大学（武汉） A kind of expansion steel reinforcement cage
CN106988300A (en) * 2017-03-15 2017-07-28 东南大学 A kind of soft soil foundation bored concrete pile horizontal bearing reinforcement and its construction method
CN108442361A (en) * 2018-04-28 2018-08-24 山西建筑工程有限公司 A kind of anti-levitating device of filling concrete pile cages fluking type and application method
CN209723010U (en) * 2019-02-28 2019-12-03 王海波 A kind of construction of hydro project foundation pile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0730550B2 (en) * 1992-02-14 1995-04-05 大亜ソイル株式会社 How to build foundation piles
CN101899829A (en) * 2010-07-22 2010-12-01 浙江中隧桥波形钢腹板有限公司 Evaginable wing plate hollow steel pipe pile
CN205329688U (en) * 2016-01-12 2016-06-22 山东科技大学 Resistance -increasing slip casting stock
CN106087987A (en) * 2016-08-12 2016-11-09 中国地质大学（武汉） A kind of expansion steel reinforcement cage
CN106988300A (en) * 2017-03-15 2017-07-28 东南大学 A kind of soft soil foundation bored concrete pile horizontal bearing reinforcement and its construction method
CN108442361A (en) * 2018-04-28 2018-08-24 山西建筑工程有限公司 A kind of anti-levitating device of filling concrete pile cages fluking type and application method
CN209723010U (en) * 2019-02-28 2019-12-03 王海波 A kind of construction of hydro project foundation pile

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