Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for post-tensioning prestressed seamless concrete terrace
The invention relates to the field of building technologies, in particular to a post-tensioning prestress seamless concrete terrace construction method. Comprising the steps that in the construction preparation step, a strain induction sensor is arranged, and a steel strand with a protective sleeve is arranged; concrete with good early strength is adopted in the concrete pouring step; in the prestress tensioning step, stress and tension are monitored through a preset sensor, a strain value when the terrace cracks for the first time is determined and is determined as an initial value for starting a tensioning device, and the tensioning device is controlled to start tensioning operation. Subsequent control is judged and controlled through a control system according to information monitored by a sensor and instructions, a preset threshold value is preferably smaller than an initial value for starting a tensioning device, and tensioning is started before the internal stress of concrete is not enough to generate cracks, so that the tensioning process is effectively controlled before the cracks are generated, and it is guaranteed that no cracks are generated on the terrace.
本申请涉及建筑技术的领域，尤其是涉及一种后张拉预应力无缝混凝土地坪施工方法。包括：在施工准备步骤中设置应变感应传感器、设置具有保护套的钢绞线；在混凝土浇注步骤中采用早期强度好的混凝土；在预应力张拉步骤中，通过预设传感器监测应力、张力，在确定了地坪首次发生开裂时的应变值，确定为启动张紧装置的初始值，控制张紧装置启动张紧作业。后续的控制均通过控制系统依据传感器监测的信息判断和指令控制，且预设的阈值优选小于启动张紧装置的初始值，在混凝土内应力还不足以产生裂纹前，即开始张拉，从而将张拉过程有效的控制在裂纹产生以前，以保证地坪不产生裂纹。
Construction method for post-tensioning prestressed seamless concrete terrace
The invention relates to the field of building technologies, in particular to a post-tensioning prestress seamless concrete terrace construction method. Comprising the steps that in the construction preparation step, a strain induction sensor is arranged, and a steel strand with a protective sleeve is arranged; concrete with good early strength is adopted in the concrete pouring step; in the prestress tensioning step, stress and tension are monitored through a preset sensor, a strain value when the terrace cracks for the first time is determined and is determined as an initial value for starting a tensioning device, and the tensioning device is controlled to start tensioning operation. Subsequent control is judged and controlled through a control system according to information monitored by a sensor and instructions, a preset threshold value is preferably smaller than an initial value for starting a tensioning device, and tensioning is started before the internal stress of concrete is not enough to generate cracks, so that the tensioning process is effectively controlled before the cracks are generated, and it is guaranteed that no cracks are generated on the terrace.
本申请涉及建筑技术的领域，尤其是涉及一种后张拉预应力无缝混凝土地坪施工方法。包括：在施工准备步骤中设置应变感应传感器、设置具有保护套的钢绞线；在混凝土浇注步骤中采用早期强度好的混凝土；在预应力张拉步骤中，通过预设传感器监测应力、张力，在确定了地坪首次发生开裂时的应变值，确定为启动张紧装置的初始值，控制张紧装置启动张紧作业。后续的控制均通过控制系统依据传感器监测的信息判断和指令控制，且预设的阈值优选小于启动张紧装置的初始值，在混凝土内应力还不足以产生裂纹前，即开始张拉，从而将张拉过程有效的控制在裂纹产生以前，以保证地坪不产生裂纹。
Construction method for post-tensioning prestressed seamless concrete terrace
一种后张拉预应力无缝混凝土地坪施工方法
HOU HAITAO (Autor:in) / ZENG YI (Autor:in) / WANG GUANGYAO (Autor:in) / HU CHENG (Autor:in) / LI CHANG (Autor:in) / HUANG SHUAI (Autor:in) / YU JIASHENG (Autor:in) / HU LIYE (Autor:in) / YANG HUAIPENG (Autor:in) / LIU LEI (Autor:in)
02.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
,
Ausbau von Bauwerken, z.B. Treppen, Fußböden
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