Super-thick bottom plate unit type stirrup supporting structure

Abstract

An ultra-thick bottom plate unit type stirrup supporting structure comprises stirrup units. The stirrup units are longitudinally arranged at intervals, the bottoms of the stirrup units are supported on the top of the lower-layer reinforcing mesh, and the tops of the stirrup units are supported on the bottom of the upper-layer reinforcing mesh; the height of the stirrup units is adjustable, and the longitudinal adjacent stirrup units are connected through longitudinal rods; stirrup bases are arranged at the bottoms of the stirrup units; a clamping groove is formed in the bottom of the stirrup base; the lower-layer reinforcing steel bar net is clamped in the clamping groove and is bound and connected through a binding wire; steel bar supports are arranged at the tops of the stirrup units in the transverse direction at intervals; the steel bar support comprises a sliding sleeve and a back shore. The sliding sleeve is transversely adjustable; a transverse groove and a longitudinal groove are formed in the top of the top support; the depth of the longitudinal grooves is not equal to that of the transverse grooves. The reinforcing steel bar stirrup solves the technical problems that the construction safety risk is increased, the operation space is reduced, the normal construction of a raft is influenced, the pouring quality of raft concrete is reduced, the project cost is increased, and the construction period is prolonged due to the fact that a U-shaped or closed annular reinforcing steel bar or steel pipe is adopted in a traditional reinforcing steel bar stirrup for the super-thick bottom plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building construction, especially relates to a super-thick bottom plate unit type stirrup support structure. BACKGROUND

[0002] With the rapid development of high-rise buildings, more and more super high-rise building foundation forms adopt pile raft foundation, and the raft depth is also deeper and deeper, so it is inevitable to face the support problem of raft steel stirrup. How to adopt an economical, effective, safe and fast raft stirrup system is the current problem. In the traditional super-thick bottom plate stirrup construction, the steel bars or steel pipes are usually made into U-shaped or closed ring shape and are arranged densely between the backing plate and the reinforcement mesh. The above structure not only reduces the operation space and affects the normal construction process of the raft, but also increases the construction safety risk, reduces the pouring quality of the raft concrete, and increases the engineering cost and construction period. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a super-thick bottom plate unit type stirrup support structure, and solves the technical problem that the traditional super-thick bottom plate steel stirrup construction adopts U-shaped or closed ring-shaped steel bars or steel pipes, which not only increases the construction safety risk, but also reduces the operation space and affects the normal construction of the raft, reduces the pouring quality of the raft concrete, and increases the engineering cost and construction period.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0005] A super-thick bottom plate unit type stirrup support structure comprises a stirrup unit; the stirrup unit is arranged in a group and is arranged in a longitudinal direction; the bottom of the stirrup unit is supported on the top of a lower reinforcement mesh; the top of the stirrup unit is supported on the bottom of an upper reinforcement mesh; the height of the stirrup unit is adjustable; the longitudinal adjacent stirrup units are connected through longitudinal rods; a stirrup base is arranged at the bottom of the stirrup unit; a clamping groove is arranged at the bottom of the stirrup base and corresponds to the position of the lower reinforcement mesh; the lower reinforcement mesh is clamped in the clamping groove, and the lower reinforcement mesh and the stirrup base are connected through wire binding; a reinforcement support is arranged at the top of the stirrup unit in a transverse direction; the reinforcement support is arranged in a group; the group of reinforcement supports is transversely and adjustably connected to the stirrup unit; the reinforcement support comprises a sliding sleeve and a jacking strut; the sliding sleeve is sleeved on the top of the stirrup unit and is transversely adjustable; the jacking strut is fixedly connected to the top of the sliding sleeve; the top of the jacking strut is provided with a transverse groove and a longitudinal groove; the depth of the longitudinal groove is not equal to the depth of the transverse groove.

[0006] Preferably, the stirrup unit comprises a vertical rod, a horizontal rod and an inclined strut; the vertical rod is arranged in a group and is arranged in a transverse direction; the horizontal rod is connected between the top and / or the middle of the two vertical rods; the inclined strut is supported in a rectangular frame and / or an inverted U-shaped frame formed by the two vertical rods and the horizontal rod.

[0007] Preferably, the vertical rod comprises a vertical rod unit; the vertical rod unit has a plurality of vertical rod units arranged vertically; bolt holes are arranged vertically at the upper and lower portions of the vertical rod unit; adjacent vertical rod units are connected by insertion and adjustable connection by bolts.

[0008] Preferably, the top support is made of a steel pipe, and transverse grooves are arranged on the opposite side walls of the top support in the transverse direction, and longitudinal grooves are arranged on the opposite side walls of the top support in the longitudinal direction; the top support is welded to the sliding sleeve.

[0009] Preferably, the longitudinal section of the sliding sleeve is adapted to the longitudinal section of the horizontal rod, and clamping bolts are arranged on the front and rear side walls of the sliding sleeve; the clamping bolts are arranged on the side walls of the corresponding side of the horizontal rod.

[0010] Compared with the prior art, the utility model has the following characteristics and beneficial effects.

[0011] 1. The super-thick bottom plate unit type stirrup support structure of the utility model adopts a stirrup unit, steel bar supports are arranged at the top of the stirrup unit, and the position of the steel bar support can be adjusted to support the upper layer of steel bar mesh. The structure of the utility model reduces the stirrup connecting points at the top of the lower layer of steel bar mesh, effectively solves the complex construction problem of the super-thick bottom plate steel bar stirrup support, reduces the local stress concentration of the stirrup support at the connecting position or the surrounding area of the lower layer of steel bar mesh, and ensures the safety and stability of the raft steel bar construction. Moreover, the structure of the application is simple to construct, the stirrup unit is once formed, and after the base is welded, the support of the steel bar mesh can be started.

[0012] 2. The stirrup unit with two vertical rods can avoid the influence of the complex pile head steel bar at the bottom of the bottom plate on the support, and in the case that the number of layers of the super-thick raft steel bar is large and the arrangement is dense, the width of the vertical rod is smaller than the spacing of the steel bars, which does not affect the normal binding of the foundation bottom plate steel bars, and the top of the support will be placed between the bottom layer and the top layer of steel bars to avoid affecting the arrangement of the steel bars. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The structure schematic view of the unit type stirrup support structure of the utility model is arranged between the lower layer of steel bar mesh and the upper layer of steel bar mesh.

[0014] Figure 2 The front view of the stirrup unit in the utility model.

[0015] Figure 3 The side view of the stirrup unit in the utility model.

[0016] Figure 4 The structure schematic view of the vertical rod in the utility model.

[0017] Figure 5This is a schematic diagram of the stirrup base in this utility model.

[0018] Figure 6 This is a schematic diagram of the steel bar support in this utility model.

[0019] Attached reference numerals: 1 - stirrup unit, 1.1 - upright, 1.1.1 - upright unit, 1.1.2 - fixing bolt, 1.2 - diagonal brace, 1.3 - horizontal bar, 2 - vertical bar, 3 - stirrup base, 4 - lower layer steel mesh, 5 - upper layer steel mesh, 6 - slot, 7 - steel bar support, 7.1 - sliding sleeve, 7.2 - top support, 8 - horizontal groove, 9 - vertical groove, 10 - clamping bolt, 11 - padding layer. Detailed Implementation

[0020] like Figures 1-6 As shown, this ultra-thick base plate unit-type stirrup support structure includes stirrup units 1; there is a set of stirrup units 1, arranged longitudinally at intervals, with the bottom of the stirrup unit 1 supported on the top of the lower layer steel mesh 4, and the top of the stirrup unit 1 supported on the bottom of the upper layer steel mesh 5; the height of the stirrup unit 1 is adjustable, and longitudinally adjacent stirrup units 1 are connected by longitudinal rods 2; a stirrup base 3 is provided at the bottom of the stirrup unit 1; a slot 6 is provided at the bottom of the stirrup base 3, corresponding to the position of the lower layer steel mesh 4; the lower layer steel mesh 4 is locked in the slot 6. Furthermore, the lower layer of reinforcing mesh 4 is connected to the stirrup base 3 by binding wire; the top of the stirrup unit 1 is provided with reinforcing bar supports 7 arranged at horizontal intervals; there is a set of reinforcing bar supports 7, and a set of reinforcing bar supports 7 is horizontally adjustable and connected to the stirrup unit 1; the reinforcing bar support 7 includes a sliding sleeve 7.1 and a top support 7.2; the sliding sleeve 7.1 is fitted onto the top of the stirrup unit 1, and the sliding sleeve 7.1 is horizontally adjustable; the top support 7.2 is fixedly connected to the top of the sliding sleeve 7.1, and the top of the top support 7.2 is provided with a horizontal groove 8 and a vertical groove 9; the depth of the vertical groove 9 is not equal to the depth of the horizontal groove 8.

[0021] In this embodiment, the stirrup unit 1 includes an upright 1.1, a crossbar 1.3, and a diagonal brace 1.2; there are two uprights 1.1, which are arranged horizontally at intervals; the crossbar 1.3 connects the tops and / or the middle of the two uprights 1.1; the diagonal brace 1.2 is supported in a rectangular frame and / or an inverted U-shaped frame formed by the two uprights 1.1 and the crossbar 1.3.

[0022] In this embodiment, the upright 1.1 includes an upright unit 1.1.1; there is a set of upright units 1.1.1, which are arranged vertically; bolt holes are provided at vertical intervals on the upper and lower parts of the upright unit 1.1.1; adjacent upright units 1.1.1 are plugged in and connected in an adjustable manner by fixing bolts 1.1.2.

[0023] In this embodiment, the top support 7.2 is made of steel pipe, and the transverse groove 8 is arranged on the transversely opposite side walls of the top support 7.2, and the longitudinal groove 9 is arranged on the longitudinally opposite side walls of the top support 7.2; the top support 7.2 is welded with the sliding sleeve 7.1.

[0024] In this embodiment, the longitudinal section of the sliding sleeve 7.1 is adapted to the longitudinal section of the horizontal rod 1.3, and the clamping bolt 10 is arranged on the front and rear side walls of the sliding sleeve 7.1 respectively; the clamping bolt 10 is arranged on the side wall of the corresponding side of the horizontal rod 1.3; the clamping bolt 10 is screwed with the sliding sleeve 7.1.

[0025] In this embodiment, the thickness of the raft foundation at the bottom of the building is not the same.

[0026] In this embodiment, when the longitudinal steel bars are below the transverse steel bars, the depth of the longitudinal groove 9 is greater than the depth of the transverse groove 8; when the longitudinal steel bars are above the transverse steel bars, the depth of the longitudinal groove 9 is less than the depth of the transverse groove 8.

[0027] In this embodiment, the stirrup base 3 is made of channel steel, and the stirrup base 3 is welded at the bottom of the vertical rod 1.1; the stirrup base 3 is directly placed on the uppermost layer of the lower layer of steel mesh 4 and the short steel bars are placed around it for binding and limiting; the stirrup base 3 needs to be measured and laid out in advance to determine its positioning before installation.

[0028] In this embodiment, the longitudinal rods 2 are arranged vertically and spaced between the longitudinally adjacent stirrup units 1; when the distance between the longitudinally adjacent stirrup units 1 is large, the steel bar support 7 is also installed on the uppermost longitudinal rod 2.

[0029] In this embodiment, full welding connection is adopted between the stirrup base 3, the inclined strut 1.2, the horizontal rod 1.3, the longitudinal rod 2 and the vertical rod 1.1; the inclined strut 1.2 adopts steel bars with a diameter not less than 12 mm.

[0030] In this embodiment, the lower layer of steel mesh 4 is bound above the cushion layer 11, and the cold primer is brushed, the APP modified asphalt waterproof roll material and non-woven geotextile are laid and then the waterproof protective layer is made on the top of the cushion layer 11 from bottom to top.

[0031] The construction method of the super-thick bottom plate unit type stirrup support structure includes the following construction steps.

[0032] S1: First, the cushion layer 11 of the raft foundation is constructed, and after the concrete strength of the cushion layer 11 reaches a certain value, the raft waterproof construction is carried out.

[0033] S2: Brush the cold primer, lay the APP modified asphalt waterproof roll material and non-woven geotextile on the cushion layer in turn, and then make the waterproof protective layer.

[0034] S3: Bind the lower layer of steel mesh 4.

[0035] S4: After the lower reinforcement mesh 4 is bound, the stirrup base 3 is placed on the top of the lower reinforcement mesh 4, and the waste short reinforcement is placed around the stirrup base 3 to bind the stirrup base 3 with the lower reinforcement mesh 4 to limit the movement of the stirrup base 3.

[0036] S5: The stirrup unit 1 is pre-processed and welded on the foundation pit, and is hoisted to the installed stirrup base 3 by the whole hoisting mode, and the vertical rod 1.1 is welded with the stirrup base 3 by full welding, and after 3-5 stirrup units 1 are hoisted, the longitudinal rod 2 connected between the stirrup units 1 is welded on the vertical rod 1.1, and after all the stirrup units 1 are hoisted and the longitudinal rod 2 is welded.

[0037] S6: The upper reinforcement mesh 5 is bound.

[0038] S7: The position of the reinforcement support 7 is adjusted to support at the cross intersection of the upper reinforcement mesh 5, and the clamping bolt 10 is temporarily fixed to the reinforcement support 7 by screwing.

[0039] S8: The raft concrete is poured.

[0040] The above embodiments are not exhaustive of the specific embodiments, and there can be other embodiments, and the above embodiments are intended to illustrate the utility model, but not to limit the protection scope of the utility model, and all the applications changed from the utility model are within the protection scope of the utility model.

Claims

1. An ultra-thick baseplate unit stirrup support structure, characterized by: The stirrup unit (1) includes a vertical rod (1.1), a horizontal rod (1.3) and a diagonal brace (1.2); the vertical rod (1.1) is arranged in two groups in a transverse direction; the horizontal rod (1.3) is connected between the top and / or middle of the two vertical rods (1.1); and the diagonal brace (1.2) is supported in a rectangular frame and / or inverted U-shaped frame formed by the two vertical rods (1.1) and the horizontal rod (1.3).

2. The ultra-thick baseplate unitized stirrup support structure of claim 1, wherein: The vertical rod (1.1) includes a vertical rod unit (1.1.1); the vertical rod unit (1.1.1) is arranged in a vertical direction; bolt holes are arranged in the upper and lower parts of the vertical rod unit (1.1.1) in a vertical direction; adjacent vertical rod units (1.1.1) are connected by insertion and are connected by a fixing bolt (1.1.2) in a transverse direction.

3. The ultra-thick baseplate unitized stirrup support structure of claim 2, wherein: The top support (7.2) is made of a steel pipe, the horizontal slot (8) is formed on the transversely opposite side walls of the top support (7.2), and the vertical slot (9) is formed on the longitudinally opposite side walls of the top support (7.2); and the top support (7.2) is welded to the sliding sleeve (7.1).

4. The ultra-thick baseplate unitized stirrup support structure of claim 1, wherein: The longitudinal section of the sliding sleeve (7.1) is adapted to the longitudinal section of the horizontal rod (1.3), and clamping bolts (10) are arranged on the front and rear side walls of the sliding sleeve (7.1); the clamping bolts (10) are arranged on the side walls of the horizontal rod (1.3) on the corresponding side.

5. The ultra-thick baseplate unitized stirrup support structure of claim 1, wherein: ​

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