Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for reinforcing local slag inclusion defect of cast-in-place concrete pile
The invention relates to a reinforcement treatment construction method for local slag inclusion defects of a cast-in-place concrete pile. The reinforcement treatment construction method comprises the following steps that (1) drilling and core pulling are conducted on the pile defect position; (2) pile core-pulling hole cleaning; (3) deslagging; (4) primary high-pressure jet grouting; (5) secondary trepanning; (6) hole washing and deslagging are conducted again; (7) secondary high-pressure jet grouting; and (9) steel bars are hoisted. The method has the beneficial effects that defect treatment is carried out on the basis of an original pile foundation, pile forming does not need to be carried out again, resource waste is avoided, and the pile treatment cost is reduced. Equipment used in the method is common equipment in normal pile foundation construction, resource investment is reduced, and construction efficiency is improved. Secondary high-pressure rotary jet grouting is adopted to treat the defects, and it can be effectively guaranteed that gaps of local slag inclusion defect parts are filled compactly. And the high-strength shrinkage-free grouting material and the finish-rolled twisted steel are matched for stress, so that the quality of the treated pile body can be effectively guaranteed, and the bearing capacity is improved.
本发明涉及一种混凝土灌注桩局部夹渣缺陷加固处理施工方法，包括以下方法：1)桩缺陷位置钻孔抽芯；2)桩抽芯孔清洗；3)排渣；4)一次高压旋喷注浆；5)二次开孔；6)重新洗孔及排渣；7)二次高压旋喷注浆；9)吊放钢筋。本发明的有益效果是：本方法是在原桩基基础上进行缺陷处理，不需重新成桩，避免造成资源浪费，减少桩处理费用。本方法所用的设备均为正常桩基施工中常用设备，减少资源的投入，并提高施工效率。采用二次高压旋喷注浆处理缺陷，可有效保证对局部夹渣缺陷部位空隙填充密实。采用高强度无收缩灌浆料与精轧螺纹钢筋配合受力，可有效保证处理后桩身质量，提高承载能力。
Construction method for reinforcing local slag inclusion defect of cast-in-place concrete pile
The invention relates to a reinforcement treatment construction method for local slag inclusion defects of a cast-in-place concrete pile. The reinforcement treatment construction method comprises the following steps that (1) drilling and core pulling are conducted on the pile defect position; (2) pile core-pulling hole cleaning; (3) deslagging; (4) primary high-pressure jet grouting; (5) secondary trepanning; (6) hole washing and deslagging are conducted again; (7) secondary high-pressure jet grouting; and (9) steel bars are hoisted. The method has the beneficial effects that defect treatment is carried out on the basis of an original pile foundation, pile forming does not need to be carried out again, resource waste is avoided, and the pile treatment cost is reduced. Equipment used in the method is common equipment in normal pile foundation construction, resource investment is reduced, and construction efficiency is improved. Secondary high-pressure rotary jet grouting is adopted to treat the defects, and it can be effectively guaranteed that gaps of local slag inclusion defect parts are filled compactly. And the high-strength shrinkage-free grouting material and the finish-rolled twisted steel are matched for stress, so that the quality of the treated pile body can be effectively guaranteed, and the bearing capacity is improved.
本发明涉及一种混凝土灌注桩局部夹渣缺陷加固处理施工方法，包括以下方法：1)桩缺陷位置钻孔抽芯；2)桩抽芯孔清洗；3)排渣；4)一次高压旋喷注浆；5)二次开孔；6)重新洗孔及排渣；7)二次高压旋喷注浆；9)吊放钢筋。本发明的有益效果是：本方法是在原桩基基础上进行缺陷处理，不需重新成桩，避免造成资源浪费，减少桩处理费用。本方法所用的设备均为正常桩基施工中常用设备，减少资源的投入，并提高施工效率。采用二次高压旋喷注浆处理缺陷，可有效保证对局部夹渣缺陷部位空隙填充密实。采用高强度无收缩灌浆料与精轧螺纹钢筋配合受力，可有效保证处理后桩身质量，提高承载能力。
Construction method for reinforcing local slag inclusion defect of cast-in-place concrete pile
一种混凝土灌注桩局部夹渣缺陷加固处理施工方法
ZHANG XUEMING (Autor:in) / ZHAO TONG (Autor:in) / JIANG ZHONGYI (Autor:in) / GUAN PEILONG (Autor:in) / CUI YUXIN (Autor:in)
30.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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