阅读说明：本技术 带变形控制框的墩列式围护墙 (Pier-row type enclosure wall with deformation control frame ) 是由 杨纪灵 王立明 王冰璇 于 2020-06-17 设计创作，主要内容包括：本发明涉及一种带变形控制框的墩列式围护墙,属基坑工程技术领域,由变形控制框和墩列式围护墙组成,墩列式围护墙由一列墩和增强冠梁组成,增强冠梁设置于墩的顶部并将墩连成整体,墩和变形控制框一一对应,变形控制框和墩列式围护墙各自设置在相互垂直的竖向平面内,由斜向设置的减变杆和水平设置的减变体以及连接二者的下支墩组成,所述的墩为一个整体,墩与墩中心的间距是常规围护桩间距的至少两倍,变形控制框和墩之间不设围檩,墩列式围墙内侧土方开挖采用分条开挖,先挖后支,可以减少工期,降低支护成本,经济性和方便性都比现有技术极大提升。(The invention relates to a mound-type enclosure wall with a deformation control frame, which belongs to the technical field of foundation pit engineering and comprises the deformation control frame and the mound-type enclosure wall, wherein the mound-type enclosure wall comprises a row of mounds and reinforced crown beams, the reinforced crown beams are arranged at the tops of the mounds and connect the mounds into a whole, the mounds correspond to the deformation control frame one by one, the deformation control frame and the mound-type enclosure wall are respectively arranged in vertical planes which are vertical to each other and consist of an obliquely arranged deformation reducing rod, a horizontally arranged deformation reducing body and a lower pier for connecting the two, the piers are integrated, the distance between the piers and the center of the pier is at least twice of the distance between the conventional fender post, no purlin is arranged between the deformation control frame and the piers, the earthwork excavation on the inner side of the pier-column type fence adopts strip excavation, the excavation is carried out firstly and then, the construction period can be reduced, the supporting cost is reduced, and the economical efficiency and the convenience are greatly improved compared with the prior art.)

1. The utility model provides a mound column formula enclosure wall that is used for area deformation control frame of foundation ditch support, its characterized in that, mound column formula enclosure wall that takes deformation control frame constitute by deformation control frame and mound column formula enclosure wall, mound column formula enclosure wall constitute by a mound and reinforcing crown beam, reinforcing crown beam set up in the top of mound and become whole with the mound even, mound and deformation control frame one-to-one, mound column formula enclosure wall and deformation control frame set up respectively in mutually perpendicular's vertical plane, deformation control frame constitute by the subtracting the variant body that the slant set up with the level to setting up and connect the two lower mound, the mound be a whole, the central interval of mound and mound is the twice of conventional pile interval at least, the deformation control frame top tighten the mound, improve the bearing capacity of mound and reduce the deformation of mound column formula enclosure wall, subtract and do not establish the purlin between variant pole and the mound, the pier is internally provided with a cylindrical bearing body.

2. The blockrow-type enclosure wall with the deformation control frame as claimed in claim 1, wherein the reinforced crown beams have a width larger than that of the piers, a bending rigidity in a horizontal plane is more than twice of that of the conventional crown beams, the piers have a thickness in a direction perpendicular to a side line of the foundation pit at least twice of that of the conventional enclosure piles, waterproof curtains are arranged between the piers, the piers are cemented soil with stiffening members and used for bearing soil pressure and force transmitted from the reducing rods, so that a construction method of excavating earth along the side line of the foundation pit in strips is realized, then the reducing rods are installed, and each excavating width is the distance between centers of the piers adjacent to each other along the excavation direction.

3. The columnar enclosure wall with the deformation control frame as claimed in claim 1, wherein the first end of the deformation reducing rod is provided with a C-shaped buckle which is buckled on a cylindrical bearing body in the pier body, the bearing body limits the movement of the C-shaped buckle perpendicular to the axis of the bearing body, but the C-shaped buckle can rotate around the axis of the bearing body and translate along the axis direction of the bearing body for adjusting the error in the installation process, the second end of the deformation reducing rod is arranged on the lower pier, the deformation reducing rod consists of an upper rod and a lower rod which are connected into a whole through a length adjuster, the upper rod is arranged at the upper end of the deformation reducing rod and can be reused for multiple times, and the lower rod is arranged at the lower end of the deformation reducing rod and is permanently embedded in the foundation slab.

4. The length regulator according to claim 1 and claim 3, wherein the length regulator comprises a limiting cylinder frame and a wedging body, the limiting cylinder frame is a hollow rectangular cylinder which is sleeved around the tapered rod, the inner wall of the limiting cylinder frame is attached to the outer wall of the tapered rod, rectangular reserved holes are arranged in two opposite side surfaces of the limiting cylinder frame, the wedging body can be wedged into a gap between the end surfaces of the upper rod and the lower rod through the reserved holes and applies prestress to the tapered rod, the jacking pier and the lower pier are provided with anti-disengagement blocks at the end parts of the circular side surfaces of the upper rod and the lower rod in the limiting cylinder frame, and a temporary anti-disengagement wedge is arranged, the anti-disengagement wedge is in a groove shape, the groove opening is reversely buckled downwards above the tapered rod and is reserved by the rectangular reserved holes in the upper side surface of the limiting cylinder frame and the tapered rod, the anti-falling wedging device is provided with a limiting groove, the limiting groove just sleeves the anti-falling block to limit the relative movement of the upper rod and the lower rod, the upper rod, the lower rod and the limiting barrel frame are assembled into a whole to be hoisted and installed, and the limiting groove is a long circular hole or a U-shaped notch.

5. The blockwise enclosure wall with the deformation control frame as claimed in claim 1, wherein the first end point of the deformation reducing body abuts against the pier, the second end point of the deformation reducing body is arranged on the lower buttress, the deformation reducing body is composed of an upper deformation reducing body and a lower deformation reducing body, the upper deformation reducing body is arranged below a foundation slab of the main structure, the lower deformation reducing body is arranged right below the upper deformation reducing body, the lower deformation reducing body is completed before excavation of the foundation pit, the lower deformation reducing body can be provided with an armpit body, the armpit body is a temporary component, and the armpit body is removed before the upper deformation reducing body is manufactured after the deformation reducing rod is installed.

6. The columnar enclosure wall with the deformation control frame as claimed in claim 1, wherein at least two of the reducing rods are mounted on one pier, and a connecting member is arranged at a set position of each reducing rod to connect the reducing rods into a whole, which is equivalent to increasing a constraint node and reducing the calculated length of each reducing rod, thereby reducing the section and saving materials.

7. The mound-type enclosure wall with the deformation control frame as claimed in claim 1, wherein the reducer bars are formed by arranging outer ribs parallel to the axis of the round steel pipe outside the wall of the round steel pipe to form the reducer bars with the outer ribs so as to increase the rigidity and the bearing capacity of the reducer bars.

8. The mound column type enclosure wall with the deformation control frame according to claim 1, wherein a foundation pit is excavated in a basin type manner, the inner side of the mound column type enclosure wall is left with soil and is put on a slope, a cast-in-place concrete cushion layer is arranged at the elevation of the pit bottom from the slope bottom to the interior of the pit, a prefabricated rod seat is arranged at the upper part of the lower pier, a prefabricated pit bottom flat rod is placed between the rod seat and the cast-in-place concrete cushion layer, the rod seat is used for fixing the reduction rod and the pit bottom flat rod and transferring the force, bears the vertical force, reduces the calculated length of the pit bottom flat rod and the reduction rod, improves the safety of foundation pit support, or reduces the cost, and the pit bottom flat rod tightly props against the rod seats at two ends and the cast-in-place concrete cushion layer, can provide enough supporting force by itself without the aid of a concrete cushion layer newly made in the later period and the friction force.

9. The mound-type enclosure wall with the deformation control frame as claimed in claim 1, wherein the foundation pit is excavated by cutting, a temporary slope soil body is arranged on the other side of the lower buttress to provide horizontal counter force to the lower buttress and enhance the deformation resistance of the deformation control frame, and a rod seat is arranged on the top of the lower buttress to provide a fulcrum for the deformation reducing rod.

Technical Field

The invention relates to the technical field of foundation pit engineering, in particular to a mound-type enclosure wall with a deformation control frame.

Background

Although the foundation pit engineering is a temporary engineering measure in the building or municipal engineering, the occupied construction cost is high, and when the working condition of a cantilever of the traditional plate-type enclosure wall is difficult to meet the requirements of safety and deformation, a fulcrum is often additionally arranged to improve the bearing capacity and reduce the deformation. The pivot forms are usually an anchor rod and an inner support, the anchor rod is limited in use because the anchor rod cannot go out of a red line of a building, when a foundation pit is large, the horizontal inner support and the upright post are high in cost, long in construction period and poor in deformation control effect, and aiming at the problem, a novel technology such as an inclined support is already applied to engineering, but certain limitations still exist, for example, when an operation space in a surrounding wall is insufficient, the anchor rod is limited in use during construction; when the main structure engineering pile is dense, the construction difficulty and the influence on the engineering pile are both problems, and the main structure engineering pile is not suitable for an inclined strut or an inclined pile; in addition, new technologies are needed to solve the problem for further reducing the cost.

On the other hand, column type enclosure pile walls are widely applied to foundation pit engineering as the prior art, and are also one type of plate type enclosure pile walls, but because the spacing of enclosure piles is usually small, when a horizontal inner support or an inclined support is additionally arranged in the middle of a pile body, the horizontal inner support or the inclined support is supported on a crown beam or a purlin (the purlin is also called a waist beam), the crown beam is also a special form of the purlin, and the purlin must be arranged in any word.

Aiming at the problems, the invention discloses a new technology for improving the bearing capacity of the supporting structure, reducing the deformation of the foundation pit and reducing the construction cost to solve the problems.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a novel technology which can shorten the construction period, reduce the cost, facilitate the construction, and is safe and reliable, namely a pier-type enclosure wall with a deformation control frame.

In order to achieve the purpose, the pier-column type enclosure wall with the deformation control frame adopts the following technical scheme:

the mound column type enclosure wall with the deformation control frame is composed of the deformation control frame and the mound column type enclosure wall, the mound column type enclosure wall is composed of a column of mounds and reinforcing crown beams, the reinforcing crown beams are arranged at the tops of the mounds and connect the mounds into a whole, the mounds correspond to the deformation control frame one to one, the mound column type enclosure wall and the deformation control frame are respectively arranged in vertical planes which are vertical to each other, the deformation control frame is a right-angled triangle and is composed of a deformation reducing rod, a deformation reducing body and lower piers which are connected with the deformation reducing rod and the deformation reducing body, the deformation reducing rod is obliquely arranged and is a bevel edge of the right-angled triangle, the deformation reducing body is horizontally arranged, the mounds are integrated, the central distance (not less than 2.4 meters) between the mounds and the conventional enclosure piles is at least twice of the distance between the conventional enclosure piles, the deformation control frame tightly props up the mounds, the bearing capacity of the mounds is improved, and the deformation of the moun, and no purlin (also called a girth) is arranged between the strain reducing rod and the pier.

The width of the reinforced crown beam is larger than that of the pier, and the bending rigidity in the horizontal plane is not less than twice of that of the conventional crown beam. The method has the advantages that the superstrong rigidity and the bearing capacity of the reinforced crown beam are utilized, earthwork can be excavated in strips along the side line of the foundation pit under the condition that the supporting rod is arranged at the back, the excavation width is the center distance of piers of adjacent piers, unearthed earthwork is used as the supporting point of the reinforced crown beam, the deformation reducing rod is installed after the strips are excavated, and the method that the earthwork is excavated firstly and then is excavated along with the support is realized.

The thickness of the pier in the direction perpendicular to the side line of the foundation pit is at least twice that of a conventional fender pile, a water-stop curtain is arranged between the pier and the pier, the pier is cemented soil provided with a stiffening member, the water-stop curtain on the inner surface in the pit is flush with the pier, and the stiffening member is a steel or concrete or wood pile or steel concrete combined member. And a cylindrical bearing body is arranged in the pier and is used for bearing the force and the soil pressure transmitted by the reducing rod. The cross section of the pier body (namely the pier body) of the pier is rectangular, circular or elliptical.

The deformation reducing rod is a deformation reducing control rod, can apply prestress, adjust the internal force of the rod, control deformation, is called the deformation reducing rod for short, is obliquely arranged on the inner side of the pier, is connected to the pier body (props against the pier) at the first end (upper end) point of the deformation reducing rod, is arranged on the lower buttress at the second end (lower end) point, is used for reducing the deformation control body, is called the deformation reducing body for short, is connected to the pier body at the first end point of the deformation reducing body, is connected to the deformation reducing rod and the deformation reducing body, and provides vertical and horizontal bearing force for the deformation reducing rod and the deformation reducing body. The number of the reducing rods on each pier is generally one, and there may be at least two reducing rods arranged on one pier.

The lower buttress, the top elevation is at the bottom surface of structure foundation, for cement, concrete, stake, steel concrete combined component or stereoplasm soil, a lower buttress sets up along the direction of parallel foundation ditch hole limit, optional, lower buttress and lower buttress can link into an organic whole.

The deformation reducing body comprises an upper deformation reducing body and a lower deformation reducing body, wherein the upper deformation reducing body is a concrete, batten, section steel or steel concrete combined member and is positioned below a foundation bottom plate of a main structure to connect a lower support pier and a pier together, the lower deformation reducing body is cement soil or hard soil and is positioned under the upper deformation reducing body, the lower deformation reducing body is completed before excavation of a foundation pit, and the hard soil can be undisturbed soil or artificial treatment soil, such as soft soil extruded into building waste. Optionally, before the upper layer deformation reducing body is completed, the lower layer deformation reducing body may be provided with an armpit body, the armpit body is a temporary component, and is removed before the upper layer deformation reducing body is manufactured after the deformation reducing rod is installed, wherein the armpit body belongs to a part of the lower layer deformation reducing body, is made of the same material, and has a stepped shape or a slope shape.

The first end (upper end) point of the deformation reducing rod is provided with a C-shaped buckle, the C-shaped buckle is made of steel with the shape of C and just buckled on a cylindrical bearing body in a pier body, the bearing body limits the movement of a vertical bearing body axis of the C-shaped buckle, but the C-shaped buckle can rotate around the axis of the bearing body and can move horizontally along the axis direction of the bearing body, so that errors in the installation process can be adjusted, and construction is facilitated. The change reducing rod consists of an upper rod and a lower rod, the upper rod is connected into a whole through a length regulator, the upper rod is arranged at the upper end of the change reducing rod and comprises a first end point and a C-shaped buckle, the first end point and the C-shaped buckle can be repeatedly utilized for many times, the engineering cost is reduced, the lower rod is arranged at the lower end of the change reducing rod, most of the lower rod is permanently embedded in the foundation bottom plate, and the part higher than the top surface of the foundation bottom plate is removed when the change reducing rod is detached. The cross section of the reducing rod is circular or rectangular, and the reducing rod is made of steel pipes or steel pipe concrete.

The length adjuster is composed of a limiting cylinder frame and a wedging body, the limiting cylinder frame is a hollow cylinder, the section of the limiting cylinder frame is rectangular (generally square, and two opposite sides can be set to be beyond the range of the square), the limiting cylinder frame is sleeved on the circumference of the reducing and changing rod, the circle of the cross section of the reducing and changing rod is an inscribed circle of the square section of the length adjuster, the inner wall of the limiting cylinder frame is attached to the outer wall of the reducing and changing rod, the length adjuster and the reducing and changing rod are ensured to be reliably assembled into a whole, the limiting cylinder frame is internally provided with rectangular reserved holes in two opposite sides, the wedging body can be wedged into a gap between the end faces of the upper rod and the lower rod through the reserved holes, and prestress can be applied to the reducing and changing rod, so that the reducing and changing rod props up the lower buttress. The wedging bodies are a group of steel blocks or concrete blocks or steel concrete combined blocks, and at least one wedging body is wedge-shaped. The limiting cylinder frame is made of a steel plate or a square steel pipe.

In order to be convenient and quick in installation engineering, the damping and variable rod is assembled into a whole to be hoisted and installed together by other measures, namely, the end parts of the circular side surfaces of the upper rod and the lower rod in the limiting cylinder frame are provided with anti-dropping blocks, the anti-dropping blocks are short steel bars (or short steel columns) which are vertically welded on the circular side surfaces of the upper rod and the lower rod, and then a temporary anti-dropping wedging device is arranged and is made of a steel plate or channel steel with a groove-shaped section, a notch is downwards reversely buckled above the damping and variable rod, and is limited by a rectangular reserved hole on the upper side surface of the limiting cylinder frame and the damping and limits the relative movement of the upper rod and the lower rod. The anticreep wedging ware is provided with the spacing groove, the spacing groove just in time entangle the anticreep keep off, assemble into a whole with upper boom and lower beam and spacing barrel casing together, be provided with a set of puller bolt again, pass the reservation screw hole of spacing barrel casing, the side of the tight anticreep wedging ware in top prevents that the anticreep wedging ware from droing when subtracting the upset of transformer pole. When the tapered rod is installed, for convenient installation, the upper rod can be directly hung by a lifting tool, the tapered rod is integrally hung and buckled on a bearing body in a pier body, the anti-drop wedging device is taken out, the length of the tapered rod is adjusted, the second end point props against the lower buttress, and the wedging body is arranged. The limiting groove is an oblong hole (one steel plate) or a U-shaped notch (two steel plates). When the reducing rod is inserted into the limiting cylinder frame, the reducing rod rotates 45 degrees relative to the set position, the anti-blocking rod enters from the corner gap of the cylinder frame and then rotates 45 degrees in the reverse direction to be placed at the set position.

Optionally, at least two of the reducing rods may be installed in parallel on one pier, a connecting member is disposed at a set position of each reducing rod to connect the reducing rods into a whole, which is equivalent to adding a constraint node to each reducing rod and reducing the calculated length of each reducing rod, thereby reducing the cross section and saving materials, the connecting member is a steel structure and has an integral structure with at least two inverted U-shaped rings (corresponding to the number of reducing rods), each reducing rod is respectively disposed in the corresponding U-shaped ring and is reversely retained by the U-shaped ring, the connecting member may be bent from a steel plate into a U-shaped ring, and then the U-shaped rings are connected into a whole, and a bolt pull rod may be disposed at an opening of the U-shaped ring. Optionally, the tapered rod may be provided with an outer rib parallel to the axis of the pipe outside the wall of the circular steel pipe to form the tapered rod with an outer rib to increase the rigidity and the bearing capacity of the tapered rod, and the outer rib is a steel plate, a steel pipe, a steel bar, a steel strand or a combination thereof.

Preferably, the excavation of foundation pit earthwork adopts basin type excavation, excavate the earthwork at the foundation pit center earlier mound column type enclosure wall inboard keep soil put the slope (stay the slope), set up cast in situ concrete bed course at the pit bottom elevation in the pit from the slope bottom, stay the slope and adopt the branch excavation, every vertical foundation pit sideline of branch, after the excavation of the slope earthwork that stays of a branch, shelve the prefabricated rod base on the lower buttress upper portion, shelve the flat pole of prefabricated pit bottom between rod base and cast in situ concrete bed course, provide horizontal counter-force to (the rod base of) lower buttress, the resistance to deformation ability of reinforcing deformation control frame. The rod seat is a force transmission component between the reducing rod and the pit bottom flat rod, and is provided with a notch for the reducing rod and the pit bottom flat rod to be placed in for fixing the reducing rod and the pit bottom flat rod and transmitting force. The method is called basin type excavation, and the slope remaining excavation route is along the side line direction of the foundation pit on the remaining soil and is along with excavation and support. The rod seat is one part of the lower buttress, can be made of concrete, steel structures or steel concrete composite structures, and is circular, rectangular, polygonal or elliptical in planar shape. The rod seat is used as a connecting node and a conversion component of the reducing and changing rod and the pit bottom flat rod, can transmit force and bear vertical force, can reduce the calculated length of the pit bottom flat rod and the reducing and changing rod, improves the safety degree of foundation pit supporting, or reduces the cost. Optionally, a connecting rod can be arranged between the rod seat and the rod seat to prevent the rod seat from rotating in the horizontal plane, the pit bottom flat rod and the connecting rod are prefabricated, the cross section of the pit bottom flat rod is circular or rectangular, and the pit bottom flat rod and the connecting rod are made of concrete, steel or steel concrete combined members. The pit bottom flat rod tightly pushes the rod seats at two ends and the cast-in-place concrete cushion layer, and can provide enough supporting force without the help of a concrete cushion layer newly made in the later stage and friction force.

The deformation control frame is arranged on one side of the lower supporting pier, optionally, a temporary slope soil body is arranged on the other side of the lower supporting pier, horizontal counter force is provided for the lower supporting pier, the deformation resistance of the deformation control frame is enhanced, a rod seat is arranged on the top of the lower supporting pier, a fulcrum is provided for the deformation reducing rod, and vertical supporting force is provided. The method is called cut excavation, the unearthing position is at the temporary slope top, the unearthing route is vertical to the edge shape of the foundation pit, and the influence on the safety of the reducing and changing rod and the foundation pit is smaller.

Compared with the prior art, the pier-arranged enclosure wall with the deformation control frame has the advantages that:

1. the construction cost is reduced: according to the pier-arranged type enclosure wall with the deformation control frame, a plurality of conventional enclosure piles are integrated into one pier, and materials are saved and the cost is reduced on the premise of finishing the same function by utilizing the composite effect of the materials and the components; the deformation control frames correspond to the piers one by one, and the stress is direct, so that the conventional purlin is omitted, and the cost is saved; because dig earlier the back, reduce and become pole length and diminish, and because length diminishes, reduce and become pole stability factor grow, under the prerequisite of accomplishing equal function, reduce and become the pole section and diminish to greatly save the cost again.

2. The construction speed is improved, and the construction period is shortened: according to the pier-arranged enclosure wall with the deformation control frames, disclosed by the invention, as the enclosing purlin is not arranged, the installation of the deformation reducing rods belongs to an assembly method, the convenience and the rapidness are realized, the processes such as welding and the like are not required on site, the normal operation is performed for not more than ten minutes for the installation of each deformation control frame, and the construction speed is faster than that in the prior art.

3. The construction is convenient: because the installation of subtracting the pole of becoming convenient fast, be different from traditional approach, the existence that subtracts the pole of becoming does not influence the excavation, can realize earlier the excavation after subtracting the pole of becoming, the mode of digging is nimble, and the selectivity is strong.

4. The foundation pit deformation is smaller: because the prestressing force can be applied in the installation process of the reducing rod, the internal force is adjusted, and therefore the deformation of the pier-type enclosure wall is smaller.

In a word, the pier-column type enclosure wall with the deformation control frame has remarkable improvement in the aspects of economy, convenience, engineering quality, reduction of construction period and the like compared with the prior art.

Drawings

FIG. 1 is a top plan view of the inventive pier-wise enclosure wall.

FIG. 2 is a horizontal cross-sectional view of the inventive pier-lined enclosure wall with a deformation control frame.

FIG. 3 is a cross-sectional view of the mound-type enclosure wall (vertical pit edge) with a deformation control frame according to the present invention.

FIG. 4 is a cross-sectional view of a pier-lined enclosure (vertical pit edge) with a deformation control frame according to the present invention (with an armpit body).

Fig. 5 is a side elevational view of the change bar of the present invention.

Fig. 6 is a vertical cross-sectional view of a (vertical crater-edge) subtractive version of the present invention.

Fig. 7 is a cross-sectional view of the reducer bar length adjuster of the present invention.

FIG. 8 is a top view of the installed change bar length adjuster of the present invention.

Figure 9 is a top view of the reducer bar length adjuster of the present invention (during integral hoisting).

Figure 10 is a cross-sectional view of the length adjuster of the present invention (during integral hoisting) with an anti-slip wedging device.

Fig. 11 is a vertical cross-sectional view of a mound-type enclosure wall (basin excavation) with a deformation control frame according to the present invention.

Fig. 12 is a plan view showing the positional relationship between the lever base, the variation reducing lever and the pit bottom flat lever according to the present invention.

Fig. 13 is a vertical cross-sectional view of a pier-wise enclosure wall (cut excavation) with a deformation control frame according to the present invention.

Fig. 14 is a cross-sectional view of a plurality of the attenuation bars and the coupling member of the present invention.

FIG. 15 is a cross-sectional view of a tapered rod of the present invention having external ribs.

Reference numerals:

1 pier

11 bearing body

2 reinforced crown beam

3 waterproof curtain

4 deformation control frame

41 reducing and changing rod

411 upper rod

412 lower rod

413C-shaped button

414 anti-disengagement gear

415 anti-drop wedging device

416 spacing groove

417 jacking bolt

42 subtractive variant

421 upper layer of the modified body

Layer 422 lower degeneration

423 haunches body

5 lower support pier

51 pole base

511 connecting rod

6 length adjuster

61 limiting cylinder frame

62 wedge-caulking body

7 pit bottom flat rod

8 cast-in-place concrete cushion layer

9 slope

10 undisturbed soil

101U-shaped ring

102 bolt pull rod

103 outer rib

Detailed Description

In order to clearly understand the technical contents of the present invention, the following examples are given in detail.

Referring to fig. 1-15, the mound-row-type enclosure wall is composed of a mound 1, a reinforcing crown beam 2 and a waterproof curtain 3, the deformation control frame 4 is composed of a deformation reducing rod 41, a deformation reducing body 42 and a lower buttress 5, the mounds 1 and the deformation control frame 4 are in one-to-one correspondence and are in a vertical plane, a cylindrical bearing body 11 is arranged in the mound body of the mound 1, and the deformation control frame 4 is perpendicular to the mound-row-type enclosure wall; the reducing rod 41 is obliquely arranged on the inner side of the pier-column type enclosure wall and comprises an upper rod 411 and a lower rod 412, a C-shaped opening 413 is formed in the upper end point of the upper rod and is just buckled on the bearing body 11, an anti-disengagement block 414 is arranged at the end part of the arc side surface of the upper rod 411 and the lower rod 412, a limiting groove 416 is formed in the anti-disengagement wedging 415, the anti-disengagement block 414 can be buckled above the reducing rod 41, and is placed in the limiting groove 416 and tightly pressed by a pressing bolt 417; the deformation reducing body 42 consists of an upper deformation reducing body 421 and a lower deformation reducing body 422, before the upper deformation reducing body 421 is constructed, the lower deformation reducing body 422 can be further provided with an armpit body 423, the deformation reducing rod 41 and the deformation reducing body 42 are connected through a lower support pier 5, and the lower support pier 5 comprises a rod seat 51; the length adjuster 6 comprises a limiting cylinder frame 61 and a wedging body 62, an upper rod 411 and a lower rod 412 of the reducing rod 41 are wedged by the wedging body 62, an anti-falling wedging device 415 is limited by a rectangular hole at one side of the limiting cylinder frame 61 in the integral hoisting process of the reducing rod 41, and an anti-falling block 414 is limited by a limiting groove 416 to prevent the relative sliding of the upper rod 411 and the lower rod 412; optionally, the foundation pit earth excavation adopts basin excavation, a prefabricated pit bottom flat rod 7 is arranged on one side of the rod seat 51 close to the center of the foundation pit, and the pit bottom flat rod 7 is propped against a cast-in-place concrete cushion 8 which reaches the age; optionally, excavation of the foundation pit earthwork is performed by cut excavation, a relief slope 9 is arranged on one side of the lower buttress 5 close to the center of the foundation pit, and horizontal displacement of the deformation control frame 4 into the foundation pit is limited by lateral soil pressure generated by the relief slope; undisturbed soil 10 is arranged below the deformation reducing body 42; alternatively, at least two or more of the reducing levers 41 may be installed in parallel on one pier and fixed by a coupling member having a plurality of U-shaped rings 101 and bolt tension rods 102 to form a node; optionally, an outer rib 103 may be disposed around the tapered rod 41 to increase the rigidity and the bearing capacity of the tapered rod.