CN211873061U

CN211873061U - Rigid pile composite foundation structure

Info

Publication number: CN211873061U
Application number: CN201922256533.7U
Authority: CN
Inventors: 罗东林; 廖宏业; 王兰
Original assignee: Chengdu Jitai Technology Co ltd
Current assignee: Chengdu Jitai Technology Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-11-06
Anticipated expiration: 2029-12-16

Abstract

The utility model provides a rigid pile composite foundation structure, which comprises a plurality of rigid piles, soil among piles, a plurality of elastic modulus coordination layers, a mattress layer, a concrete cushion layer and a foundation base layer; through increasing the elastic modulus coordination layer at the up end of a plurality of rigid piles, under upper building load and mattress layer regulating action, at first by the common atress of soil between the stake and elastic modulus coordination layer, subside jointly, full play soil between the stake bears the weight of the effect, then soil between the stake together with rigid pile under mattress layer regulating action common atress.

Description

Rigid pile composite foundation structure

Technical Field

The utility model relates to a foundation engineering technical field, in particular to composite foundation structure of rigid pile.

Background

The design principle of the composite foundation is that the piles and soil between the piles are stressed together. At present, the application of the rigid pile composite foundation in engineering construction is more and more extensive, the pile bearing capacity in the rigid pile composite foundation is high, the settlement is small, the bearing capacity of soil between piles is relatively low, the settlement is large, and the greater settlement difference exists between the rigid pile and the soil between piles in the stress process. Under the effect of upper building load, the rigid pile and soil are stressed together and are settled simultaneously, and under the same settlement amount, the pile can be formed, the bearing capacity is fully exerted, but the bearing capacity of the soil between the piles is not fully exerted, so that the rigid pile is stressed excessively, the pile foundation is damaged, and great potential safety hazards are caused. Therefore, the existing composite foundation needs to be improved, so that the soil between the piles is settled under the common stress of the rigid piles and the soil between the piles, and then the soil between the piles and the rigid piles are stressed together.

SUMMERY OF THE UTILITY MODEL

In order to achieve the aim, the utility model provides a rigid pile composite foundation structure, which comprises a plurality of rigid piles, inter-pile soil, a plurality of elastic modulus coordination layers, a mattress layer, a concrete cushion layer and a foundation layer; the utility model discloses a foundation, including a plurality of rigidity piles, bedding cushion layer, foundation, a plurality of rigidity piles distribute in soil layer below the foundation, soil distributes between the stake between a plurality of rigidity piles, a plurality of elastic modulus harmony layers set up the up end at the rigidity pile, bedding cushion layer lower surface simultaneously with pile between the laminating of soil upper surface and a plurality of elastic modulus harmony layer upper surface, bedding cushion layer upper surface sets up the concrete cushion, concrete cushion layer upper surface sets up the foundation bed.

Furthermore, the elastic modulus coordination layer is a rubber pad, a foam pad or a spring with the outer surface coated with a flexible material.

Furthermore, the thickness of the elastic modulus coordination layer is 10-30 mm.

Further, the mattress layer is a graded sand and pebble layer.

Furthermore, the upper surface of the soil between the piles and the upper surface of the elastic modulus coordination layer are positioned on the same horizontal plane.

Further, the concrete cushion layer is a poured C15 concrete layer.

The utility model discloses a beneficial effect does: the utility model discloses a rigid pile composite foundation structure through the up end at a plurality of rigid piles increase the compatible layer of elastic modulus, under upper building load and mattress layer regulatory action, at first by the stake between soil and the common atress of the compatible layer of elastic modulus, subside jointly, the effect of bearing of soil between the full play stake, then between the stake soil with rigid pile under mattress layer regulatory action common atress together.

Drawings

Fig. 1 is a schematic structural diagram of a rigid pile composite foundation.

In the figure: 1. the foundation comprises a rigid pile, 2 pile soil, 3 elastic modulus coordination layers, 4 mattress layers, 5 concrete cushion layers and 6 foundation base layers.

Detailed Description

The invention will be described in further detail with reference to the embodiment of fig. 1. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

The utility model provides a rigid pile composite foundation structure, which comprises a plurality of rigid piles 1, inter-pile soil 2, a plurality of elastic modulus coordination layers 3, a mattress layer 4, a concrete cushion layer 5 and a foundation base layer 6; the elastic modulus coordination layer 3 is a foam cushion layer, the mattress cushion layer 4 is a graded sand-gravel layer, and a C15 concrete layer is poured on the concrete cushion layer 5; firstly, distributing the plurality of prefabricated or poured rigid piles 1 in a soil layer below a foundation, wherein the inter-pile soil 2 is distributed among the plurality of rigid piles 1;

after the completion, the elastic modulus coordination layers 3 are arranged on the upper end face of the rigid pile 1, the upper surface of the soil 2 between the piles and the upper surface of the elastic modulus coordination layers 3 are ensured to be in the same horizontal plane, the mattress layer 4 is arranged on the upper surfaces of the soil 2 between the piles and the elastic modulus coordination layers 3, the concrete cushion layer 5 is arranged on the upper surface of the mattress layer 4, and then the foundation base layer 6 is poured on the upper surface of the concrete cushion layer 5.

According to the condition of the soil quality of the soil 2 between the piles, the thickness of the elastic modulus coordination layer 3 is selected to be 10-30 mm; the soil quality of the inter-pile soil 2 is better, the thickness is small when the pile soil stress is smaller, the soil quality of the inter-pile soil 2 is poorer, and the thickness is large when the pile soil stress is larger.

Claims

1. A rigid pile composite foundation structure is characterized by comprising a plurality of rigid piles, pile soil, a plurality of elastic modulus coordination layers, a mattress layer, a concrete cushion layer and a foundation base layer; the utility model discloses a foundation, including a plurality of rigidity piles, bedding cushion layer, foundation, a plurality of rigidity piles distribute in soil layer below the foundation, soil distributes between the stake between a plurality of rigidity piles, a plurality of elastic modulus harmony layers set up the up end at the rigidity pile, bedding cushion layer lower surface simultaneously with pile between the laminating of soil upper surface and a plurality of elastic modulus harmony layer upper surface, bedding cushion layer upper surface sets up the concrete cushion, concrete cushion layer upper surface sets up the foundation bed.

2. A rigid pile composite foundation structure as claimed in claim 1 wherein the modulus of elasticity coordinating layer is a rubber or foam pad.

3. A rigid pile composite foundation structure as defined in claim 1, wherein said modulus of elasticity coordinating layer is a spring coated with a flexible material on its outer surface.

4. The rigid pile composite foundation structure of claim 1, wherein the modulus of elasticity conforming layer is 10 to 30mm thick.

5. The rigid pile composite foundation structure of claim 1, wherein the bedding layer is a graded sand and pebble layer.

6. A rigid pile composite foundation structure as defined in claim 1, wherein the upper surface of the soil between the piles is level with the upper surface of the modulus of elasticity coordinating layer.

7. The rigid pile composite foundation structure of claim 1, wherein the concrete pad is a poured C15 concrete layer.